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Demars M, McDowell T, Renaud J, Scott A, Fruci M, Topp E. Persistence and evidence for accelerated biodegradation of streptomycin in agricultural soils. Sci Total Environ 2024:172502. [PMID: 38636872 DOI: 10.1016/j.scitotenv.2024.172502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 04/12/2024] [Accepted: 04/13/2024] [Indexed: 04/20/2024]
Abstract
Some antibiotics are used for the treatment of various bacterial crop diseases, and there is a concern that this practice may represent a selection pressure that increases the reservoir of antibiotic resistance carried by bacteria in crop production systems. Since the 1950s the aminoglycoside antibiotic streptomycin has been widely used for the treatment of some bacterial crop diseases such as fire blight in apples and pears. Following application, the time that bacteria will be exposed to the antibiotic, and therefore the pressure for selection of resistance, will vary according to the environmental persistence of the antibiotic. In the present study, the dissipation of streptomycin was examined in soils supplemented with 5 mg streptomycin/kg soil and incubated for 21 days under laboratory conditions. The impact of two key rate-controlling variables, soil texture (sandy loam, loam, clay loam) and temperature (4, 20, 30 °C) on streptomycin persistence were explored. -Robust methods for streptomycin extraction and analysis by LC-MS/MS were developed. Streptomycin dissipation followed first order kinetics, with the time to dissipate 50 % of the parent compound (DT50) in soils of varying texture incubated at 20 °C ranging from about seven to 15 days. In contrast, the DT50 of streptomycin in autoclaved loam soil incubated at 20 °C was about 111 days. At 4 °C the DT50 ranged from 49 to 137 days. Under no incubation conditions were any extractable transformation products obtained. Streptomycin was dissipated significantly more rapidly in field soil that had a prior history of exposure to the antibiotic than in soil that did not. Taken together, these results indicate that streptomycin is amenable to biodegradation in agricultural soils with DT50s of several days when temperature is permissive.
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Affiliation(s)
- Megan Demars
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada; Department of Biology, University of Western Ontario, London, ON, Canada
| | - Tim McDowell
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
| | - Justin Renaud
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
| | - Andrew Scott
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
| | - Michael Fruci
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada; Department of Microbiology and Immunology, University of Western Ontario, London, ON, Canada
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada; Department of Biology, University of Western Ontario, London, ON, Canada.
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Scott A, Topp E, Revellin C, Hartmann A, Fruci M. Complete genome sequence of Bradyrhizobium ottawaense strain MIAE 01942 isolated from soybean nodules grown in antibiotic-amended soil. Microbiol Resour Announc 2024; 13:e0000424. [PMID: 38501779 PMCID: PMC11008171 DOI: 10.1128/mra.00004-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 03/08/2024] [Indexed: 03/20/2024] Open
Abstract
Bradyrhizobium ottawaense MIAE 01942 is a symbiotic nitrogen-fixing bacterium isolated from the root nodules of soybeans grown in agricultural soils amended with veterinary antibiotics. The genome consists of a single 8.45 Mb circular chromosome that harbors genes involved in nitrogen fixation, denitrification, and antibiotic and metal resistance.
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Affiliation(s)
- Andrew Scott
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada
| | - Edward Topp
- Agroécologie Research Unit, INRAE, Université de Bourgogne, Dijon, France
- Department of Biology, University of Western Ontario, London, Ontario, Canada
| | - Cécile Revellin
- Agroécologie Research Unit, INRAE, Université de Bourgogne, Dijon, France
| | - Alain Hartmann
- Agroécologie Research Unit, INRAE, Université de Bourgogne, Dijon, France
| | - Michael Fruci
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada
- Department of Microbiology and Immunology, University of Western Ontario, London, Ontario, Canada
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Manaia CM, Aga DS, Cytryn E, Gaze WH, Graham DW, Guo J, Leonard AFC, Li L, Murray AK, Nunes OC, Rodriguez-Mozaz S, Topp E, Zhang T. The Complex Interplay Between Antibiotic Resistance and Pharmaceutical and Personal Care Products in the Environment. Environ Toxicol Chem 2024; 43:637-652. [PMID: 36582150 DOI: 10.1002/etc.5555] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/29/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
Antibiotic-resistant bacteria (ARB) and antibiotic resistance genes (ARGs) are important environmental contaminants. Nonetheless, what drives the evolution, spread, and transmission of antibiotic resistance dissemination is still poorly understood. The abundance of ARB and ARGs is often elevated in human-impacted areas, especially in environments receiving fecal wastes, or in the presence of complex mixtures of chemical contaminants, such as pharmaceuticals and personal care products. Self-replication, mutation, horizontal gene transfer, and adaptation to different environmental conditions contribute to the persistence and proliferation of ARB in habitats under strong anthropogenic influence. Our review discusses the interplay between chemical contaminants and ARB and their respective genes, specifically in reference to co-occurrence, potential biostimulation, and selective pressure effects, and gives an overview of mitigation by existing man-made and natural barriers. Evidence and strategies to improve the assessment of human health risks due to environmental antibiotic resistance are also discussed. Environ Toxicol Chem 2024;43:637-652. © 2022 SETAC.
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Affiliation(s)
- Célia M Manaia
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Porto, Portugal
| | - Diana S Aga
- Chemistry Department, University at Buffalo, The State University of New York, Buffalo, New York, USA
| | - Eddie Cytryn
- Institute of Soil, Water and Environmental Sciences, Volcani Institute, Agricultural Research Organization, Rishon-Lezion, Israel
| | - William H Gaze
- European Centre for Environment and Human Health, University of Exeter Medical School, Penryn Campus, Cornwall, UK
| | - David W Graham
- School of Engineering, Newcastle University, Newcastle, UK
| | - Jianhua Guo
- Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St. Lucia, Queensland, Australia
| | - Anne F C Leonard
- European Centre for Environment and Human Health, University of Exeter Medical School, Penryn Campus, Cornwall, UK
| | - Liguan Li
- Environmental Microbiome Engineering and Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, The University of Hong Kong, Hong Kong, China
| | - Aimee K Murray
- European Centre for Environment and Human Health, University of Exeter Medical School, Penryn Campus, Cornwall, UK
| | - Olga C Nunes
- Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Porto, Portugal
| | - Sara Rodriguez-Mozaz
- Catalan Institute for Water Research, Girona, Spain
- Universitat de Girona, Girona, Spain
| | - Edward Topp
- Agriculture and Agri-Food Canada, London, Ontario, Canada
- Department of Biology, University of Western Ontario, London, Ontario, Canada
| | - Tong Zhang
- Environmental Microbiome Engineering and Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, The University of Hong Kong, Hong Kong, China
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Lau CHF, Capitani S, Tien YC, Verellen LA, Kithama M, Kang H, Kiarie EG, Topp E, Diarra MS, Fruci M. Dynamic effects of black soldier fly larvae meal on the cecal bacterial microbiota and prevalence of selected antimicrobial resistant determinants in broiler chickens. Anim Microbiome 2024; 6:6. [PMID: 38360706 PMCID: PMC10868003 DOI: 10.1186/s42523-024-00293-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 01/26/2024] [Indexed: 02/17/2024] Open
Abstract
BACKGROUND We had earlier described the growth-promoting and -depressive effects of replacing soybean meal (SBM) with low (12.5% and 25%) and high (50% and 100%) inclusion levels of black soldier fly larvae meal (BSFLM), respectively, in Ross x Ross 708 broiler chicken diets. Herein, using 16S rRNA gene amplicon sequencing, we investigated the effects of replacing SBM with increasing inclusion levels (0-100%) of BSFLM in broiler diets on the cecal bacterial community composition at each growth phase compared to broilers fed a basal corn-SBM diet with or without the in-feed antibiotic, bacitracin methylene disalicylate (BMD). We also evaluated the impact of low (12.5% and 25%) inclusion levels of BSFLM (LIL-BSFLM) on the prevalence of selected antimicrobial resistance genes (ARGs) in litter and cecal samples from 35-day-old birds. RESULTS Compared to a conventional SBM-based broiler chicken diet, high (50 to100%) inclusion levels of BSFLM (HIL-BSFLM) significantly altered the cecal bacterial composition and structure, whereas LIL-BSFLM had a minimal effect. Differential abundance analysis further revealed that the ceca of birds fed 100% BSFLM consistently harbored a ~ 3 log-fold higher abundance of Romboutsia and a ~ 2 log-fold lower abundance of Shuttleworthia relative to those fed a BMD-supplemented control diet at all growth phases. Transient changes in the abundance of several potentially significant bacterial genera, primarily belonging to the class Clostridia, were also observed for birds fed HIL-BSFLM. At the finisher phase, Enterococci bacteria were enriched in the ceca of chickens raised without antibiotic, regardless of the level of dietary BSFLM. Additionally, bacitracin (bcrR) and macrolide (ermB) resistance genes were found to be less abundant in the ceca of chickens fed antibiotic-free diets, including either a corn-SBM or LIL-BSFLM diet. CONCLUSIONS Chickens fed a HIL-BSFLM presented with an imbalanced gut bacterial microbiota profile, which may be linked to the previously reported growth-depressing effects of a BSFLM diet. In contrast, LIL-BSFLM had a minimal effect on the composition of the cecal bacterial microbiota and did not enrich for selected ARGs. Thus, substitution of SBM with low levels of BSFLM in broiler diets could be a promising alternative to the antibiotic growth promoter, BMD, with the added-value of not enriching for bacitracin- and macrolide-associated ARGs.
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Affiliation(s)
- Calvin Ho-Fung Lau
- Ottawa Laboratory (Carling), Canadian Food Inspection Agency, Ottawa, ON, Canada.
| | - Sabrina Capitani
- Ottawa Laboratory (Carling), Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - Yuan-Ching Tien
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
| | - Lou Ann Verellen
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
| | - Munene Kithama
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada
| | - Hellen Kang
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
- School of Medicine, Faculty of Health Sciences, Queen's University, Kingston, ON, Canada
| | - Elijah G Kiarie
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
- Agroécologie research unit, INRAE, Université de Bourgogne, Dijon, France
| | - Moussa S Diarra
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
| | - Michael Fruci
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada.
- Department of Microbiology and Immunology, University of Western Ontario, London, ON, Canada.
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Subirats J, Sharpe H, Tai V, Fruci M, Topp E. Metagenome meta-analysis reveals an increase in the abundance of some multidrug efflux pumps and mobile genetic elements in chemically polluted environments. Appl Environ Microbiol 2023; 89:e0104723. [PMID: 37728942 PMCID: PMC10617411 DOI: 10.1128/aem.01047-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 07/17/2023] [Indexed: 09/22/2023] Open
Abstract
Many human activities contaminate terrestrial and aquatic environments with numerous chemical pollutants that not only directly alter the environment but also affect microbial communities in ways that are potentially concerning to human health, such as selecting for the spread of antibiotic-resistance genes (ARGs) through horizontal gene transfer. In the present study, metagenomes available in the public domain from polluted (with antibiotics, with petroleum, with metal mining, or with coal-mining effluents) and unpolluted terrestrial and aquatic environments were compared to examine whether pollution has influenced the abundance and composition of ARGs and mobile elements, with specific focus on IS26 and class 1 integrons (intI1). When aggregated together, polluted environments had a greater relative abundance of ARGs than unpolluted environments and a greater relative abundance of IS26 and intI1. In general, chemical pollution, notably with petroleum, was associated with an increase in the prevalence of ARGs linked to multidrug efflux pumps. Included in the suite of efflux pumps were mexK, mexB, mexF, and mexW that are polyspecific and whose substrate ranges include multiple classes of critically important antibiotics. Also, in some instances, β-lactam resistance (TEM181 and OXA-541) genes increased, and genes associated with rifampicin resistance (RNA polymerases subunits rpoB and rpoB2) decreased in relative abundance. This meta-analysis suggests that different types of chemical pollution can enrich populations that carry efflux pump systems associated with resistance to multiple classes of medically critical antibiotics.IMPORTANCEThe United Nations has identified chemical pollution as being one of the three greatest threats to environmental health, through which the evolution of antimicrobial resistance, a seminally important public health challenge, may be favored. While this is a very plausible outcome of continued chemical pollution, there is little evidence or research evaluating this risk. The objective of the present study was to examine existing metagenomes from chemically polluted environments and evaluate whether there is evidence that pollution increases the relative abundance of genes and mobile genetic elements that are associated with antibiotic resistance. The key finding is that for some types of pollution, particularly in environments exposed to petroleum, efflux pumps are enriched, and these efflux pumps can confer resistance to multiple classes of medically important antibiotics that are typically associated with Pseudomonas spp. or other Gram-negative bacteria. This finding makes clear the need for more investigation on the impact of chemical pollution on the environmental reservoir of ARGs and their association with mobile genetic elements that can contribute to horizontal gene transfer events.
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Affiliation(s)
- Jessica Subirats
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, Spanish Council for Scientific Research (IDAEA-CSIC), Barcelona, Spain
| | - Hannah Sharpe
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada
- Department of Biology, University of Western Ontario, London, Ontario, Canada
| | - Vera Tai
- Department of Biology, University of Western Ontario, London, Ontario, Canada
| | - Michael Fruci
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada
- Department of Microbiology and Immunology, University of Western Ontario, London, Ontario, Canada
| | - Edward Topp
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada
- Department of Biology, University of Western Ontario, London, Ontario, Canada
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Tran TT, Cole M, Tomas E, Scott A, Topp E. Potential selection and maintenance of manure-originated multi-drug resistant plasmids at sub-clinical concentrations for tetracycline family antibiotics. Can J Microbiol 2023; 69:339-350. [PMID: 37267627 DOI: 10.1139/cjm-2022-0240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The goal of this study was to (a) determine the minimum selection concentrations of tetracycline family antibiotics necessary to maintain plasmids carrying tetracycline-resistant genes and (b) correlate these results to environmental hotspot concentrations reported in previous studies. This study used two plasmids (pT295A and pT413A) originating from dairy manure in a surrogate Escherichia coli host CV601. The minimum selection concentrations of antibiotics tested in nutrient-rich medium were determined as follows: 0.1 mg/L for oxytetracycline, 0.45 mg/L for chlortetracycline, and 0.13-0.25 mg/L for tetracycline. Mixing oxytetracycline and chlortetracycline had minimum selection concentration values increased 2-fold compared to those in single antibiotic tests. Minimum selection concentrations found in this study were lower than reported environmental hotspot concentrations, suggesting that tetracycline family antibiotics were likely to be the driver for the selection and maintenance of these plasmids. Relatively high plasmid loss rates (>90%) were observed when culturing a strain carrying a tetracycline-resistant plasmid in antibiotic-free nutrient-rich and nutrient-defined media. Overall, results suggested that these plasmids can be maintained at concentrations environmentally relevant in wastewater treatment plants, sewage, manure, and manured soil; however, they are unstable and easily lost in the absence of antibiotics.
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Affiliation(s)
- Tam T Tran
- London Research and Development Centre, Agriculture and Agri-Food Canada, 1391 Sandford St, London, ON N5V 4T3, Canada
- Department of Biology, University of Western Ontario, 1151 Richmond St, London, ON N6A 3K7, Canada
| | - Marlena Cole
- London Research and Development Centre, Agriculture and Agri-Food Canada, 1391 Sandford St, London, ON N5V 4T3, Canada
| | - Emily Tomas
- London Research and Development Centre, Agriculture and Agri-Food Canada, 1391 Sandford St, London, ON N5V 4T3, Canada
| | - Andrew Scott
- London Research and Development Centre, Agriculture and Agri-Food Canada, 1391 Sandford St, London, ON N5V 4T3, Canada
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, 1391 Sandford St, London, ON N5V 4T3, Canada
- Department of Biology, University of Western Ontario, 1151 Richmond St, London, ON N6A 3K7, Canada
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Chalmers G, Anderson REV, Murray R, Topp E, Boerlin P. Characterization of Proteus mirabilis and associated plasmids isolated from anaerobic dairy cattle manure digesters. PLoS One 2023; 18:e0289703. [PMID: 37561682 PMCID: PMC10414651 DOI: 10.1371/journal.pone.0289703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 07/24/2023] [Indexed: 08/12/2023] Open
Abstract
Proteus mirabilis is an opportunistic pathogen associated with a variety of human infections, including urinary tract infections. The prevalence of P. mirabilis in foods of animal origin and in the manure by-products created in animal production is not well documented. Further, the prevalence and persistence of extended-spectrum cephalosporin (ESC) resistant P. mirabilis is largely unknown. In this study, we characterized ESC-resistant P. mirabilis recovered from various stages of dairy manure anaerobic digestion. Isolates were screened by PCR for blaCTX-M, blaCMY and blaSHV, and antimicrobial susceptibility testing was performed. Fifty-six P. mirabilis carrying CTX-M were sequenced with short and long read sequencing technologies, and the assembled chromosomes and plasmids were compared. ESC-resistant Proteus was found in four of the six manure digesters, an indication that not all digesters were colonized with resistant strains. Both CTX-M-1 and CTX-M-15 plasmids were found in P. mirabilis isolates. Transfer of plasmid DNA by conjugation was also explored, with ESC-resistance plasmids able to transfer to Escherichia coli at high frequency. We concluded that P. mirabilis can harbour and transfer ESC-resistance genes and plasmids, and may be an overlooked reservoir of antimicrobial resistance.
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Affiliation(s)
- Gabhan Chalmers
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Rebecca E. V. Anderson
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Roger Murray
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
| | - Patrick Boerlin
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
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Paris L, Devers-Lamrani M, Joly M, Viala D, De Antonio M, Pereira B, Rouard N, Besse-Hoggan P, Hébraud M, Topp E, Martin-Laurent F, Batisson I. Effect of subtherapeutic and therapeutic sulfamethazine concentrations on transcribed genes and translated proteins involved in Microbacterium sp. C448 resistance and degradation. FEMS Microbiol Ecol 2023; 99:fiad064. [PMID: 37309049 DOI: 10.1093/femsec/fiad064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 05/16/2023] [Accepted: 06/09/2023] [Indexed: 06/14/2023] Open
Abstract
Microbacterium sp. C448, isolated from a soil regularly exposed to sulfamethazine (SMZ), can use various sulphonamide antibiotics as the sole carbon source for growth. The basis for the regulation of genes encoding the sulphonamide metabolism pathway, the dihydropteroate synthase sulphonamide target (folP), and the sulphonamide resistance (sul1) genes is unknown in this organism. In the present study, the response of the transcriptome and proteome of Microbacterium sp. C448 following exposure to subtherapeutic (33 µM) or therapeutic (832 µM) SMZ concentrations was evaluated. Therapeutic concentration induced the highest sad expression and Sad production, consistent with the activity of SMZ degradation observed in cellulo. Following complete SMZ degradation, Sad production tended to return to the basal level observed prior to SMZ exposure. Transcriptomic and proteomic kinetics were concomitant for the resistance genes and proteins. The abundance of Sul1 protein, 100-fold more abundant than FolP protein, did not change in response to SMZ exposure. Moreover, non-targeted analyses highlighted the increase of a deaminase RidA and a putative sulphate exporter expression and production. These two novel factors involved in the 4-aminophenol metabolite degradation and the export of sulphate residues formed during SMZ degradation, respectively, provided new insights into the Microbacterium sp. C448 SMZ detoxification process.
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Affiliation(s)
- Laurianne Paris
- Université Clermont Auvergne, CNRS, LMGE, F-63000 Clermont-Ferrand, France
- Université Clermont Auvergne, CNRS, ICCF, F-63000 Clermont-Ferrand, France
| | - Marion Devers-Lamrani
- Institut Agro, INRAE, Université de Bourgogne, Université de Bourgogne Franche-Comté, Agroécologie, F-21000 Dijon, France
| | - Muriel Joly
- Université Clermont Auvergne, CNRS, LMGE, F-63000 Clermont-Ferrand, France
- Université Clermont Auvergne, CNRS, ICCF, F-63000 Clermont-Ferrand, France
| | - Didier Viala
- INRAE Site de Theix, Plate-forme d'exploration du métabolisme, F-63122 Saint-Genès Champanelle, France
| | - Marie De Antonio
- Biostatistics Unit (DRCI), Clermont-Ferrand University Hospital, F-63000 Clermont-Ferrand, France
| | - Bruno Pereira
- Biostatistics Unit (DRCI), Clermont-Ferrand University Hospital, F-63000 Clermont-Ferrand, France
| | - Nadine Rouard
- Institut Agro, INRAE, Université de Bourgogne, Université de Bourgogne Franche-Comté, Agroécologie, F-21000 Dijon, France
| | | | - Michel Hébraud
- INRAE Site de Theix, Plate-forme d'exploration du métabolisme, F-63122 Saint-Genès Champanelle, France
- Université Clermont Auvergne, INRAE, UMR MEDiS, F-63122 Saint-Genès Champanelle, France
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON N5V 4T3, Canada
- Department of Biology, University of Western Ontario, London, ON N6A 3K7, Canada
| | - Fabrice Martin-Laurent
- Institut Agro, INRAE, Université de Bourgogne, Université de Bourgogne Franche-Comté, Agroécologie, F-21000 Dijon, France
| | - Isabelle Batisson
- Université Clermont Auvergne, CNRS, LMGE, F-63000 Clermont-Ferrand, France
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9
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Yin X, Chen X, Jiang XT, Yang Y, Li B, Shum MHH, Lam TTY, Leung GM, Rose J, Sanchez-Cid C, Vogel TM, Walsh F, Berendonk TU, Midega J, Uchea C, Frigon D, Wright GD, Bezuidenhout C, Picão RC, Ahammad SZ, Nielsen PH, Hugenholtz P, Ashbolt NJ, Corno G, Fatta-Kassinos D, Bürgmann H, Schmitt H, Cha CJ, Pruden A, Smalla K, Cytryn E, Zhang Y, Yang M, Zhu YG, Dechesne A, Smets BF, Graham DW, Gillings MR, Gaze WH, Manaia CM, van Loosdrecht MCM, Alvarez PJJ, Blaser MJ, Tiedje JM, Topp E, Zhang T. Toward a Universal Unit for Quantification of Antibiotic Resistance Genes in Environmental Samples. Environ Sci Technol 2023. [PMID: 37310875 DOI: 10.1021/acs.est.3c00159] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Surveillance of antibiotic resistance genes (ARGs) has been increasingly conducted in environmental sectors to complement the surveys in human and animal sectors under the "One-Health" framework. However, there are substantial challenges in comparing and synthesizing the results of multiple studies that employ different test methods and approaches in bioinformatic analysis. In this article, we consider the commonly used quantification units (ARG copy per cell, ARG copy per genome, ARG density, ARG copy per 16S rRNA gene, RPKM, coverage, PPM, etc.) for profiling ARGs and suggest a universal unit (ARG copy per cell) for reporting such biological measurements of samples and improving the comparability of different surveillance efforts.
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Affiliation(s)
- Xiaole Yin
- Environmental Microbiome Engineering and Biotechnology Laboratory, Center for Environmental Engineering Research, Department of Civil Engineering, The University of Hong Kong, Pokfulam, 99077 Hong Kong, China
| | - Xi Chen
- Environmental Microbiome Engineering and Biotechnology Laboratory, Center for Environmental Engineering Research, Department of Civil Engineering, The University of Hong Kong, Pokfulam, 99077 Hong Kong, China
| | - Xiao-Tao Jiang
- Microbiome Research Centre, St George and Sutherland Clinical School, University of New South Wales, 2052 Sydney, Australia
| | - Ying Yang
- School of Marine Sciences, Sun Yat-sen University, 519082 Zhuhai, China
| | - Bing Li
- State Environmental Protection Key Laboratory of Microorganism Application and Risk Control, Tsinghua Shenzhen International Graduate School, Tsinghua University, F518055 Shenzhen, China
| | - Marcus Ho-Hin Shum
- State Key Laboratory of Emerging Infectious Diseases, School of Public Health, The University of Hong Kong, Pokfulam, 999077 Hong Kong, China
| | - Tommy T Y Lam
- State Key Laboratory of Emerging Infectious Diseases, School of Public Health, The University of Hong Kong, Pokfulam, 999077 Hong Kong, China
| | - Gabriel M Leung
- Laboratory of Data Discovery for Health, Hong Kong Science & Technology Parks, New Territories, 99077 Hong Kong, China
| | - Joan Rose
- Department of Fisheries and Wildlife, Michigan State University, East Lansing, 48824 Michigan, United States
| | - Concepcion Sanchez-Cid
- Environmental Microbial Genomics, CNRS UMR 5005 Laboratoire Ampère, École Centrale de Lyon, Université Claude Bernard Lyon1, Université de Lyon, 69130 Écully, France
| | - Timothy M Vogel
- Environmental Microbial Genomics, CNRS UMR 5005 Laboratoire Ampère, École Centrale de Lyon, Université Claude Bernard Lyon1, Université de Lyon, 69130 Écully, France
| | - Fiona Walsh
- Department of Biology, Maynooth University, Maynooth, R51 Co. Kildare, Ireland
| | - Thomas U Berendonk
- Faculty of Environmental Sciences, Technische Universität Dresden, Institute for Hydrobiology, 01217 Dresden, Germany
| | | | | | - Dominic Frigon
- Department of Civil Engineering and Applied Mechanics, McGill University, 817 Sherbrooke St. West, Montreal, H3A 0C3 Quebec, Canada
| | - Gerard D Wright
- Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, L8N 3Z5 Ontario, Canada
| | - Carlos Bezuidenhout
- Unit for Environmental Sciences and Management (UESM)-Microbiology, North-West University, 2531 Potchefstroom, South Africa
| | - Renata C Picão
- Medical Microbiology Department, Paulo de Góes Microbiology Institute of the Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
| | - Shaikh Z Ahammad
- Department of Biochemical Engineering & Biotechnology, Indian Institute of Technology Delhi, Hauz Khas, 110016 New Delhi, India
| | - Per Halkjær Nielsen
- Center for Microbial Communities, Department of Chemistry and Bioscience, Aalborg University, 9210 Aalborg, Denmark
| | - Philip Hugenholtz
- School of Chemistry and Molecular Biosciences, Australian Centre for Ecogenomics, The University of Queensland, Brisbane, 4072 Queensland, Australia
| | - Nicholas J Ashbolt
- Faculty of Science and Engineering, Southern Cross University, Bilinga, 4225 Queensland, Australia
| | - Gianluca Corno
- Molecular Ecology Group (MEG), Water Research Institute, National Research Council of Italy (CNR-IRSA), 28922 Verbania, Italy
| | - Despo Fatta-Kassinos
- Department of Civil and Environmental Engineering and Nireas International Water Research Center, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
| | - Helmut Bürgmann
- Eawag: Swiss Federal Institute of Aquatic Science and Technology, 6047 Kastanienbaum, Switzerland
| | - Heike Schmitt
- Centre for Zoonoses and Environmental Microbiology-Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), 3721 Bilthoven, The Netherlands
- Department of Biotechnology, Delft University of Technology, 2628 Delft, the Netherlands
| | - Chang-Jun Cha
- Department of Systems Biotechnology and Center for Antibiotic Resistome, Chung-Ang University, 17546 Anseong, Republic of Korea
| | - Amy Pruden
- The Charles Edward Via, Jr., Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, 24060 Virginia, United States
| | - Kornelia Smalla
- Julius Kühn Institute (JKI) Federal Research Centre for Cultivated Plants, Institute for Epidemiology and Pathogen Diagnostics, 38104 Braunschweig, Germany
| | - Eddie Cytryn
- Department of Soil Chemistry, Plant Nutrition and Microbiology, Institute of Soil, Water and Environmental Sciences, The Volcani Institute, Agricultural Research Organization, 7528809 Rishon LeZion, Israel
| | - Yu Zhang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085 Beijing, China
| | - Min Yang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085 Beijing, China
| | - Yong-Guan Zhu
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021 Xiamen, China
| | - Arnaud Dechesne
- Department of Environmental and Resource Engineering, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Barth F Smets
- Department of Environmental and Resource Engineering, Technical University of Denmark, 2800 Lyngby, Denmark
| | - David W Graham
- School of Engineering, Newcastle University, NE1 7RU Newcastle Upon Tyne, U.K
| | - Michael R Gillings
- School of Natural Sciences and ARC Centre of Excellence in Synthetic Biology, Macquarie University, Sydney, 2109 New South Wales, Australia
| | - William H Gaze
- University of Exeter Medical School, Environment and Sustainability Institute, University of Exeter, TR10 9FE Cornwall, U.K
| | - Célia M Manaia
- Universidade Católica Portuguesa, CBQF-Centro de Biotecnologia e Química Fina-Laboratório Associado, Escola Superior de Biotecnologia, 4169-005 Porto, Portugal
| | - Mark C M van Loosdrecht
- Department of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, the Netherlands
| | - Pedro J J Alvarez
- Department of Civil and Environmental Engineering, Rice University, Houston, 77005 Texas, United States
| | - Martin J Blaser
- Center for Advanced Biotechnology and Medicine, Rutgers University, Piscataway, 08854 New Jersey, United States
| | - James M Tiedje
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, 48824 Michigan, United States
| | - Edward Topp
- London Research and Development Centre (LRDC), Agriculture and Agri-Food Canada, London, N5V 4T3 Ontario, Canada
| | - Tong Zhang
- Environmental Microbiome Engineering and Biotechnology Laboratory, Center for Environmental Engineering Research, Department of Civil Engineering, The University of Hong Kong, Pokfulam, 99077 Hong Kong, China
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10
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Yin X, Li L, Chen X, Liu YY, Lam TTY, Topp E, Zhang T. Global environmental resistome: Distinction and connectivity across diverse habitats benchmarked by metagenomic analyses. Water Res 2023; 235:119875. [PMID: 36996751 DOI: 10.1016/j.watres.2023.119875] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 03/09/2023] [Accepted: 03/10/2023] [Indexed: 06/19/2023]
Abstract
The widely distributed antibiotic resistance genes (ARGs) were unevenly proliferated in various habitats. Great endeavors are needed to resolve the resistome features that can differentiate or connect different habitats. This study retrieved a broad spectrum of resistome profiles from 1723 metagenomes categorized into 13 habitats, encompassing industrial, urban, agricultural, and natural environments, and spanning most continents and oceans. The resistome features (ARG types, subtypes, indicator ARGs, and emerging mobilizable ARGs: mcr and tet(X)) in these habitats were benchmarked via a standardized workflow. We found that wastewater and wastewater treatment works were characterized to be reservoirs of more diverse genotypes of ARGs than any other habitats including human and livestock fecal samples, while fecal samples were with higher ARG abundance. Bacterial taxonomy composition was significantly correlated with resistome composition across most habitats. Moreover, the source-sink connectivities were disentangled by developing the resistome-based microbial attribution prediction model. Environmental surveys with standardized bioinformatic workflow proposed in this study will help comprehensively understand the transfer of ARGs in the environment, thus prioritizing the critical environments with high risks for intervention to tackle the problem of ARGs.
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Affiliation(s)
- Xiaole Yin
- Environmental Microbiome Engineering and Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, Hong Kong SAR, China
| | - Liguan Li
- Environmental Microbiome Engineering and Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, Hong Kong SAR, China
| | - Xi Chen
- Environmental Microbiome Engineering and Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, Hong Kong SAR, China
| | - Yang-Yu Liu
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Tommy Tsan-Yuk Lam
- State Key Laboratory of Emerging Infectious Diseases, School of Public Health, The University of Hong Kong, Hong Kong SAR, China; Centre for Immunology & Infection, The Hong Kong Science Park, Hong Kong SAR, China; Laboratory of Data Discovery for Health, The Hong Kong Science Park, Hong Kong SAR, China
| | - Edward Topp
- London Research and Development Centre (LRDC), Agriculture and Agri-Food Canada, London, ON, Canada; Department of Biology, University of Western Ontario, London, ON, Canada
| | - Tong Zhang
- Environmental Microbiome Engineering and Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, Hong Kong SAR, China; Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau SAR, China.
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11
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Affiliation(s)
- D G J Larsson
- Department of Infectious Diseases, Institute for Biomedicine, University of Gothenburg, Gothenburg, Sweden.
- Centre for Antibiotic Resistance Research in Gothenburg, Gothenburg, Sweden.
| | - W H Gaze
- European Centre for Environment and Human Health, University of Exeter Medical School, Exeter, UK
| | | | - E Topp
- Agriculture and Agri-Food Canada, London, Ontario, Canada
- Department of Biology, University of Western Ontario, London, Ontario, Canada
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12
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Subirats J, Sharpe H, Santoro D, Topp E. Modeling Antibiotic Concentrations in the Vicinity of Antibiotic-Producing Bacteria at the Micron Scale. Appl Environ Microbiol 2023; 89:e0026123. [PMID: 36975795 PMCID: PMC10132100 DOI: 10.1128/aem.00261-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 03/09/2023] [Indexed: 03/29/2023] Open
Abstract
It is generally thought that antibiotics confer upon the producing bacteria the ability to inhibit or kill neighboring microorganisms, thereby providing the producer with a significant competitive advantage. Were this to be the case, the concentrations of emitted antibiotics in the vicinity of producing bacteria might be expected to fall within the ranges of MICs that are documented for a number of bacteria. Furthermore, antibiotic concentrations that bacteria are punctually or chronically exposed to in environments harboring antibiotic-producing bacteria might fall within the range of minimum selective concentrations (MSCs) that confer a fitness advantage to bacteria carrying acquired antibiotic resistance genes. There are, to our knowledge, no available in situ measured antibiotic concentrations in the biofilm environments that bacteria typically live in. The objective of the present study was to use a modeling approach to estimate the antibiotic concentrations that might accumulate in the vicinity of bacteria that are producing an antibiotic. Fick's law was used to model antibiotic diffusion using a series of key assumptions. The concentrations of antibiotics within a few microns of single producing cells could not reach MSC (8 to 16 μg/L) or MIC (500 μg/L) values, whereas the concentrations around aggregates of a thousand cells could reach these concentrations. The model outputs suggest that single cells could not produce an antibiotic at a rate sufficient to achieve a bioactive concentration in the vicinity, whereas a group of cells, each producing the antibiotic, could do so. IMPORTANCE It is generally assumed that a natural function of antibiotics is to provide their producers with a competitive advantage. If this were the case, sensitive organisms in proximity to producers would be exposed to inhibitory concentrations. The widespread detection of antibiotic resistance genes in pristine environments suggests that bacteria are indeed exposed to inhibitory antibiotic concentrations in the natural world. Here, a model using Fick's law was used to estimate potential antibiotic concentrations in the space surrounding producing cells at the micron scale. Key assumptions were that per-cell production rates drawn from the pharmaceutical manufacturing industry are applicable in situ, that production rates were constant, and that produced antibiotics are stable. The model outputs indicate that antibiotic concentrations in proximity to aggregates of a thousand cells can indeed be in the minimum inhibitory or minimum selective concentration range.
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Affiliation(s)
- Jessica Subirats
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada
- Department of Biology, University of Western Ontario, London, Ontario, Canada
| | - Hannah Sharpe
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada
- Department of Biology, University of Western Ontario, London, Ontario, Canada
| | - Domenico Santoro
- USP Technologies, London, Ontario, Canada
- Department of Chemical and Biochemical Engineering, University of Western Ontario, London, Ontario, Canada
| | - Edward Topp
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada
- Department of Biology, University of Western Ontario, London, Ontario, Canada
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13
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Fruci M, Kithama M, Kiarie EG, Shao S, Liu H, Topp E, Diarra MS. Effects of partial or complete replacement of soybean meal with commercial black soldier fly larvae (Hermetia illucens) meal on growth performance, cecal short chain fatty acids, and excreta metabolome of broiler chickens. Poult Sci 2023; 102:102463. [PMID: 36758368 PMCID: PMC9941379 DOI: 10.1016/j.psj.2022.102463] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/16/2022] [Accepted: 12/25/2022] [Indexed: 01/08/2023] Open
Abstract
Black soldier fly larvae meal (BSFLM) is receiving great attention as a rich source of protein and antimicrobials for poultry. Therefore, we evaluated the effects of partially or completely replacing soybean meal (SBM) with commercial BSFLM on growth performance, tibia traits, cecal short chain fatty acid (SCFA) concentrations, and excreta metabolomes in broiler chickens (Gallus gallus domesticus). A total of 480 day-old male Ross × Ross 708 chicks were assigned to 6 diets (8 replicates/diet): a basal corn-SBM diet with in-feed bacitracin methylene disalicylate (BMD), a corn-SBM diet without BMD (0% BSFLM), and four diets in which the SBM was substituted with 12.5, 25, 50, and 100% BSFLM. Body weight (BW), feed intake (FI) and cumulative feed conversion ratio (cFCR) were monitored on days 14, 28, and 35. Cecal SCFA levels were determined on days 14, 28, and 35. Tibia traits and excreta metabolomes were determined on day (d) 35. On d14, birds fed 12.5 and 25% BSFLM had a similar BW, FI, and cFCR as birds fed BMD (P > 0.05). On d 35, birds fed 12.5% BSFLM had a similar BW, FI and cFCR as birds fed BMD or 0% BSFLM (P > 0.05). For each phase, birds fed 100% BSFLM had a lower BW, FI and higher cFCR than birds fed BMD or 0% BSFLM (P < 0.05). On d 35, BW decreased linearly, quadratically, and cubically with increasing levels of BSFLM (P < 0.01). Overall (d 0-35), BSFLM linearly, quadratically, and cubically decreased FI and quadratically and cubically increased cFCR (P < 0.01). Quadratic responses were observed for tibia fresh weight (P = 0.049) and ash content (P = 0.022). BSFLM did not impact cecal SCFAs levels. The excreta metabolome of birds fed 100% BSFLM clustered independently from all other groups and exhibited greater levels of putatively identified methionine, lysine, valine, glutamine, histidine and lower levels of arginine as compared to all diets. Taken together, substitution of SBM with ≤25% of BSFLM in the starter phase may be used as an alternative to BMD.
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Affiliation(s)
- Michael Fruci
- London Research and Development Centre, Agriculture and Agri-Food Canada, Department of Microbiology and Immunology, University of Western Ontario, London, Ontario, Canada.
| | - Munene Kithama
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, Ontario, Canada; Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada
| | - Elijah G Kiarie
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada
| | - Suqin Shao
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, Ontario, Canada
| | - Huaizhi Liu
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, Ontario, Canada
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada; Department of Biology, University of Western Ontario, London, Ontario, Canada
| | - Moussa S Diarra
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, Ontario, Canada
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14
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Zaidi SEZ, Zaheer R, Poulin-Laprade D, Scott A, Rehman MA, Diarra M, Topp E, Domselaar GV, Zovoilis A, McAllister TA. Comparative Genomic Analysis of Enterococci across Sectors of the One Health Continuum. Microorganisms 2023; 11:microorganisms11030727. [PMID: 36985300 PMCID: PMC10052687 DOI: 10.3390/microorganisms11030727] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/06/2023] [Accepted: 03/08/2023] [Indexed: 03/14/2023] Open
Abstract
Enterococci are Gram-positive bacteria that can be isolated from a variety of environments including soil, water, plants, and the intestinal tract of humans and animals. Although they are considered commensals in humans, Enterococcus spp. are important opportunistic pathogens. Due to their presence and persistence in diverse environments, Enterococcus spp. are ideal for studying antimicrobial resistance (AMR) from the One Health perspective. We undertook a comparative genomic analysis of the virulome, resistome, mobilome, and the association between the resistome and mobilome of 246 E. faecium and 376 E. faecalis recovered from livestock (swine, beef cattle, poultry, dairy cattle), human clinical samples, municipal wastewater, and environmental sources. Comparative genomics of E. faecium and E. faecalis identified 31 and 34 different antimicrobial resistance genes (ARGs), with 62% and 68% of the isolates having plasmid-associated ARGs, respectively. Across the One Health continuum, tetracycline (tetL and tetM) and macrolide resistance (ermB) were commonly identified in E. faecium and E. faecalis. These ARGs were frequently associated with mobile genetic elements along with other ARGs conferring resistance against aminoglycosides [ant(6)-la, aph(3′)-IIIa], lincosamides [lnuG, lsaE], and streptogramins (sat4). Study of the core E. faecium genome identified two main clades, clade ‘A’ and ‘B’, with clade A isolates primarily originating from humans and municipal wastewater and carrying more virulence genes and ARGs related to category I antimicrobials. Overall, despite differences in antimicrobial usage across the continuum, tetracycline and macrolide resistance genes persisted in all sectors.
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Affiliation(s)
- Sani-e-Zehra Zaidi
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada
- Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Drive, Lethbridge, AB T1K 3M4, Canada
| | - Rahat Zaheer
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada
| | - Dominic Poulin-Laprade
- Sherbrooke Research and Development Centre, Agriculture and Agri-Food Canada, Sherbrooke, QC J1M 1Z3, Canada
| | - Andrew Scott
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON N5V 4T3, Canada
| | - Muhammad Attiq Rehman
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, ON N1G 5C9, Canada
| | - Moussa Diarra
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, ON N1G 5C9, Canada
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON N5V 4T3, Canada
| | - Gary Van Domselaar
- National Microbiology Laboratory, Public Health Agency of Canada, 1015 Arlington Street, Winnipeg, MB R3E 3R2, Canada
| | - Athanasios Zovoilis
- Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Drive, Lethbridge, AB T1K 3M4, Canada
| | - Tim A. McAllister
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada
- Correspondence:
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15
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Berkner S, Anke JM, Düring RA, Fiebig S, Junker T, Hennecke D, Herrchen M, Meinerling M, Römbke J, Thiele-Bruhn S, Topp E, Völkel W, Walter-Rohde S. Validation of a method to determine transformation of chemicals in anaerobic liquid pig and cattle manure for the OECD test guideline programme. Chemosphere 2023; 312:137210. [PMID: 36368544 DOI: 10.1016/j.chemosphere.2022.137210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
Manure is widely used as a fertilizer and applied to agricultural land. It may contain highly active chemicals like veterinary medicinal products or biocides, which enter into the environment by this pathway. This is recognized by several regulatory frameworks, however, a detailed method for examining the transformation of chemicals in manure was lacking. This article describes the validation of a method for studying the anaerobic transformation of chemicals in pig and cattle liquid manure. Different steps are covered with an emphasis on the validation ring test and the OECD (Organisation for Economic Cooperation and Development) process that led to the recent adoption of the method as OECD Test Guideline (TG) 320.
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Affiliation(s)
| | | | - Rolf-Alexander Düring
- Justus Liebig University, Institute of Soil Science and Soil Conservation, Giessen, Germany
| | | | | | - Dieter Hennecke
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Schmallenberg, Germany
| | - Monika Herrchen
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Schmallenberg, Germany
| | | | - Jörg Römbke
- ECT Oekotoxikologie GmbH, Flörsheim, Germany
| | | | - Edward Topp
- Agriculture and Agri-Food Canada, London, ON, Canada; Department of Biology, University of Western Ontario, London, ON, Canada
| | - Wolfgang Völkel
- Innovative Environmental Sciences (IES), Witterswil, Switzerland
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16
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Mak PHW, Rehman MA, Kiarie EG, Topp E, Diarra MS. Production systems and important antimicrobial resistant-pathogenic bacteria in poultry: a review. J Anim Sci Biotechnol 2022; 13:148. [PMID: 36514172 DOI: 10.1186/s40104-022-00786-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 09/18/2022] [Indexed: 12/15/2022] Open
Abstract
Economic losses and market constraints caused by bacterial diseases such as colibacillosis due to avian pathogenic Escherichia coli and necrotic enteritis due to Clostridium perfringens remain major problems for poultry producers, despite substantial efforts in prevention and control. Antibiotics have been used not only for the treatment and prevention of such diseases, but also for growth promotion. Consequently, these practices have been linked to the selection and spread of antimicrobial resistant bacteria which constitute a significant global threat to humans, animals, and the environment. To break down the antimicrobial resistance (AMR), poultry producers are restricting the antimicrobial use (AMU) while adopting the antibiotic-free (ABF) and organic production practices to satisfy consumers' demands. However, it is not well understood how ABF and organic poultry production practices influence AMR profiles in the poultry gut microbiome. Various Gram-negative (Salmonella enterica serovars, Campylobacter jejuni/coli, E. coli) and Gram-positive (Enterococcus spp., Staphylococcus spp. and C. perfringens) bacteria harboring multiple AMR determinants have been reported in poultry including organically- and ABF-raised chickens. In this review, we discussed major poultry production systems (conventional, ABF and organic) and their impacts on AMR in some potential pathogenic Gram-negative and Gram-positive bacteria which could allow identifying issues and opportunities to develop efficient and safe production practices in controlling pathogens.
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Affiliation(s)
- Philip H W Mak
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada (AAFC), Guelph, ON, Canada.,Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada
| | - Muhammad Attiq Rehman
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada (AAFC), Guelph, ON, Canada
| | - Elijah G Kiarie
- Department of Animal Biosciences, University of Guelph, Guelph, ON, Canada
| | - Edward Topp
- London Research and Development Center, AAFC, London, ON, Canada
| | - Moussa S Diarra
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada (AAFC), Guelph, ON, Canada.
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17
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Hetman BM, Pearl DL, Barker DOR, Robertson J, Nash JHE, Reid-Smith R, Agunos A, Carrillo C, Topp E, Van Domselaar G, Parmley EJ, Bharat A, Mulvey M, Allen V, Taboada EN. Combining analytical epidemiology and genomic surveillance to identify risk factors associated with the spread of antimicrobial resistance in Salmonella enterica subsp. enterica serovar Heidelberg. Microb Genom 2022; 8:mgen000891. [PMID: 36748560 PMCID: PMC9836098 DOI: 10.1099/mgen.0.000891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Antimicrobial resistance (AMR) has become a critical threat to public health worldwide. The use of antimicrobials in food and livestock agriculture, including the production of poultry, is thought to contribute to the dissemination of antibiotic resistant bacteria (ARB) and the genes and plasmids that confer the resistant phenotype (ARG). However, the relative contribution of each of these processes to the emergence of resistant pathogens in poultry production and their potential role in the transmission of resistant pathogens in human infections, requires a deeper understanding of the dynamics of ARB and ARG in food production and the factors involved in the increased risk of transmission.
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Affiliation(s)
- Benjamin M. Hetman
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada,*Correspondence: Benjamin M. Hetman,
| | - David L. Pearl
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Dillon O. R. Barker
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - James Robertson
- National Microbiology Laboratory, Public Health Agency of Canada, Guelph, Ontario, Canada
| | - John H. E. Nash
- National Microbiology Laboratory, Public Health Agency of Canada, Guelph, Ontario, Canada
| | - Richard Reid-Smith
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada,Centre for Foodborne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, Ontario, Canada
| | - Agnes Agunos
- Centre for Foodborne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, Ontario, Canada
| | - Catherine Carrillo
- Ottawa Laboratory (Carling), Canadian Food Inspection Agency, Ottawa, Ontario, Canada
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada; Department of Biology, University of Western Ontario, London, Ontario, Canada
| | - Gary Van Domselaar
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - E. Jane Parmley
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Amrita Bharat
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - Michael Mulvey
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - Vanessa Allen
- Public Health Ontario Laboratory, Toronto, Ontario, Canada,Present address: Department of Laboratory Medicine and Pathobiology, University of Toronto, Ontario, Toronto, Canada
| | - Eduardo N. Taboada
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
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18
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Marutescu LG, Jaga M, Postolache C, Barbuceanu F, Milita NM, Romascu LM, Schmitt H, de Roda Husman AM, Sefeedpari P, Glaeser S, Kämpfer P, Boerlin P, Topp E, Gradisteanu Pircalabioru G, Chifiriuc MC, Popa M. Insights into the impact of manure on the environmental antibiotic residues and resistance pool. Front Microbiol 2022; 13:965132. [PMID: 36187968 PMCID: PMC9522911 DOI: 10.3389/fmicb.2022.965132] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/19/2022] [Indexed: 11/24/2022] Open
Abstract
The intensive use of antibiotics in the veterinary sector, linked to the application of manure-derived amendments in agriculture, translates into increased environmental levels of chemical residues, AR bacteria (ARB) and antibiotic resistance genes (ARG). The aim of this review was to evaluate the current evidence regarding the impact of animal farming and manure application on the antibiotic resistance pool in the environment. Several studies reported correlations between the prevalence of clinically relevant ARB and the amount and classes of antibiotics used in animal farming (high resistance rates being reported for medically important antibiotics such as penicillins, tetracyclines, sulfonamides and fluoroquinolones). However, the results are difficult to compare, due to the diversity of the used antimicrobials quantification techniques and to the different amounts and types of antibiotics, exhibiting various degradation times, given in animal feed in different countries. The soils fertilized with manure-derived products harbor a higher and chronic abundance of ARB, multiple ARG and an enriched associated mobilome, which is also sometimes seen in the crops grown on the amended soils. Different manure processing techniques have various efficiencies in the removal of antibiotic residues, ARB and ARGs, but there is only a small amount of data from commercial farms. The efficiency of sludge anaerobic digestion appears to be dependent on the microbial communities composition, the ARB/ARG and operating temperature (mesophilic vs. thermophilic conditions). Composting seems to reduce or eliminate most of antibiotics residues, enteric bacteria, ARB and different representative ARG in manure more rapidly and effectively than lagoon storage. Our review highlights that despite the body of research accumulated in the last years, there are still important knowledge gaps regarding the contribution of manure to the AMR emergence, accumulation, spread and risk of human exposure in countries with high clinical resistance rates. Land microbiome before and after manure application, efficiency of different manure treatment techniques in decreasing the AMR levels in the natural environments and along the food chain must be investigated in depth, covering different geographical regions and countries and using harmonized methodologies. The support of stakeholders is required for the development of specific best practices for prudent – cautious use of antibiotics on farm animals. The use of human reserve antibiotics in veterinary medicine and of unprescribed animal antimicrobials should be stopped and the use of antibiotics on farms must be limited. This integrated approach is needed to determine the optimal conditions for the removal of antibiotic residues, ARB and ARG, to formulate specific recommendations for livestock manure treatment, storage and handling procedures and to translate them into practical on-farm management decisions, to ultimately prevent exposure of human population.
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Affiliation(s)
- Luminita Gabriela Marutescu
- Department of Microbiology, Faculty of Biology, University of Bucharest, Bucharest, Romania
- Research Institute of University of Bucharest, Bucharest, Romania
| | - Mihaela Jaga
- Department of Microbiology, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | | | - Florica Barbuceanu
- Research Institute of University of Bucharest, Bucharest, Romania
- The Institute for Diagnostic and Animal Health (IDSA), Bucharest, Romania
- Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, Bucharest, Romania
| | - Nicoleta Manuela Milita
- Research Institute of University of Bucharest, Bucharest, Romania
- The Institute for Diagnostic and Animal Health (IDSA), Bucharest, Romania
- Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, Bucharest, Romania
| | - Luminita Maria Romascu
- Research Institute of University of Bucharest, Bucharest, Romania
- The Institute for Diagnostic and Animal Health (IDSA), Bucharest, Romania
- Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, Bucharest, Romania
| | - Heike Schmitt
- National Institute for Public Health and the Environment, Bilthoven, Netherlands
| | | | | | - Stefanie Glaeser
- Institute for Applied Microbiology Heinrich-Buff-Ring, Justus-Liebig University, Gießen, Germany
| | - Peter Kämpfer
- Institute for Applied Microbiology Heinrich-Buff-Ring, Justus-Liebig University, Gießen, Germany
| | - Patrick Boerlin
- Department of Pathobiology, University of Guelph, Guelph, ON, Canada
| | - Edward Topp
- Department of Pathobiology, University of Guelph, Guelph, ON, Canada
- Department of Biology, Agriculture and Agri-Food Canada, University of Western Ontario, London, ON, Canada
| | - Gratiela Gradisteanu Pircalabioru
- Department of Microbiology, Faculty of Biology, University of Bucharest, Bucharest, Romania
- Research Institute of University of Bucharest, Bucharest, Romania
- Academy of Romanian Scientists, Bucharest, Romania
- *Correspondence: Gratiela Gradisteanu Pircalabioru,
| | - Mariana Carmen Chifiriuc
- Department of Microbiology, Faculty of Biology, University of Bucharest, Bucharest, Romania
- Research Institute of University of Bucharest, Bucharest, Romania
- Academy of Romanian Scientists, Bucharest, Romania
- The Romanian Academy, Bucharest, Romania
- Mariana Carmen Chifiriuc,
| | - Marcela Popa
- Department of Microbiology, Faculty of Biology, University of Bucharest, Bucharest, Romania
- Research Institute of University of Bucharest, Bucharest, Romania
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19
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Bilal M, Diarra M, Islam MR, Lepp D, Mastin Wood ER, Topp E, Bittman S, Zhao X. Effects of litter from antimicrobial-fed broiler chickens on soil bacterial community structure and diversity. Can J Microbiol 2022; 68:643-653. [PMID: 35944283 DOI: 10.1139/cjm-2022-0086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study examined changes in soil bacterial community composition and diversity in response to fertilization with litter from chickens fed diet with no antibiotics, bambermycin, penicillin, bacitracin, salinomycin, and mix of salinomycin and bacitracin. Litter was applied to 24 agricultural-plots. Non-fertilized plots were used as a negative control. Soil samples collected from the studied plots were used to quantify Escherichia coli by plate counts, and Clostridium perfringens by qPCR. The 16S-rRNA gene sequencing was performed for microbiota analysis. Following litter application in December, the population size of E.coli was 5.4 log CFU/g, however, regardless of treatments the result revealed 5.2 and 1.4 log CFU/g of E.coli in soil sampled in January and March, respectively. Fertilization with antibiotic treated litter increased (P < 0.05) the relative abundance of Proteobacteria, Actinobacteria and Firmicutes in soil, but decreased Acidobacteria and Verrucomicrobia groups. The alpha-diversity parameters were higher (P < 0.05) in non-fertilized soil compared to the fertilized ones, suggesting that litter application was a major factor in shaping the soil bacterial communities. These results may help develop efficient litter management strategies like composting, autoclaving, or anaerobic digestion of poultry litter before application to land for preservation of soil health and crop productivity.
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Affiliation(s)
- Muhammad Bilal
- McGill University, Deptartment of Animal Science, Montreal, Quebec, Canada;
| | - Moussa Diarra
- Agriculture and Agri-Food Canada (AAFC), Guelph, Canada;
| | | | - Dion Lepp
- Agriculture and Agri-Food Canada, Guelph, Canada;
| | | | - Edward Topp
- Agriculture and Agri-Food Canada, London, Ontario, Canada;
| | - Shabtai Bittman
- Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, Agassiz, British Columbia, Canada;
| | - Xin Zhao
- McGill University, Deptartment of Animal Science, Montreal, Quebec, Canada;
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20
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George PBL, Rossi F, St-Germain MW, Amato P, Badard T, Bergeron MG, Boissinot M, Charette SJ, Coleman BL, Corbeil J, Culley AI, Gaucher ML, Girard M, Godbout S, Kirychuk SP, Marette A, McGeer A, O’Shaughnessy PT, Parmley EJ, Simard S, Reid-Smith RJ, Topp E, Trudel L, Yao M, Brassard P, Delort AM, Larios AD, Létourneau V, Paquet VE, Pedneau MH, Pic É, Thompson B, Veillette M, Thaler M, Scapino I, Lebeuf M, Baghdadi M, Castillo Toro A, Cayouette AB, Dubois MJ, Durocher AF, Girard SB, Diaz AKC, Khalloufi A, Leclerc S, Lemieux J, Maldonado MP, Pilon G, Murphy CP, Notling CA, Ofori-Darko D, Provencher J, Richer-Fortin A, Turgeon N, Duchaine C. Antimicrobial Resistance in the Environment: Towards Elucidating the Roles of Bioaerosols in Transmission and Detection of Antibacterial Resistance Genes. Antibiotics (Basel) 2022; 11:antibiotics11070974. [PMID: 35884228 PMCID: PMC9312183 DOI: 10.3390/antibiotics11070974] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/30/2022] [Accepted: 07/15/2022] [Indexed: 02/01/2023] Open
Abstract
Antimicrobial resistance (AMR) is continuing to grow across the world. Though often thought of as a mostly public health issue, AMR is also a major agricultural and environmental problem. As such, many researchers refer to it as the preeminent One Health issue. Aerial transport of antimicrobial-resistant bacteria via bioaerosols is still poorly understood. Recent work has highlighted the presence of antibiotic resistance genes in bioaerosols. Emissions of AMR bacteria and genes have been detected from various sources, including wastewater treatment plants, hospitals, and agricultural practices; however, their impacts on the broader environment are poorly understood. Contextualizing the roles of bioaerosols in the dissemination of AMR necessitates a multidisciplinary approach. Environmental factors, industrial and medical practices, as well as ecological principles influence the aerial dissemination of resistant bacteria. This article introduces an ongoing project assessing the presence and fate of AMR in bioaerosols across Canada. Its various sub-studies include the assessment of the emissions of antibiotic resistance genes from many agricultural practices, their long-distance transport, new integrative methods of assessment, and the creation of dissemination models over short and long distances. Results from sub-studies are beginning to be published. Consequently, this paper explains the background behind the development of the various sub-studies and highlight their shared aspects.
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Affiliation(s)
- Paul B. L. George
- Département de Médecine Moléculaire, Université Laval, Quebec City, QC G1V 0A6, Canada; (P.B.L.G.); (J.C.); (I.S.)
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
| | - Florent Rossi
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Institut de Chimie de Clermont-Ferrand, SIGMA Clermont, CNRS, Université Clermont-Auvergne, 63178 Clermont-Ferrand, France; (P.A.); (A.-M.D.)
| | - Magali-Wen St-Germain
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
| | - Pierre Amato
- Institut de Chimie de Clermont-Ferrand, SIGMA Clermont, CNRS, Université Clermont-Auvergne, 63178 Clermont-Ferrand, France; (P.A.); (A.-M.D.)
| | - Thierry Badard
- Centre de Recherche en Données et Intelligence Géospatiales (CRDIG), Quebec City, QC G1V 0A6, Canada;
| | - Michel G. Bergeron
- Centre de Recherche en Infectiologie, Centre de Recherche du CHU de Québec-Université Laval, Axe Maladies Infectieuses et Immunitaires, Quebec City, QC G1V 4G2, Canada; (M.G.B.); (M.B.); (É.P.)
| | - Maurice Boissinot
- Centre de Recherche en Infectiologie, Centre de Recherche du CHU de Québec-Université Laval, Axe Maladies Infectieuses et Immunitaires, Quebec City, QC G1V 4G2, Canada; (M.G.B.); (M.B.); (É.P.)
| | - Steve J. Charette
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Institut de Biologie Intégrative et des Systèmes, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Brenda L. Coleman
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON M5T 3M7, Canada; (B.L.C.); (A.M.)
| | - Jacques Corbeil
- Département de Médecine Moléculaire, Université Laval, Quebec City, QC G1V 0A6, Canada; (P.B.L.G.); (J.C.); (I.S.)
- Centre de Recherche en Infectiologie, Centre de Recherche du CHU de Québec-Université Laval, Axe Maladies Infectieuses et Immunitaires, Quebec City, QC G1V 4G2, Canada; (M.G.B.); (M.B.); (É.P.)
| | - Alexander I. Culley
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Institut de Biologie Intégrative et des Systèmes, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Marie-Lou Gaucher
- Research Chair in Meat Safety, Département de Pathologie et Microbiologie, Université de Montréal, Saint-Hyacinthe, QC J2S 2M2, Canada;
| | | | - Stéphane Godbout
- Institut de Recherche et de Développement en Agroenvironnement (IRDA), Quebec City, QC G1P 3W8, Canada; (S.G.); (A.D.L.); (A.K.C.D.)
- Département des Sols et de Génie Agroalimentaire, Université Laval, Quebec City, QC G1V 0A6, Canada;
| | - Shelley P. Kirychuk
- Department of Medicine, University of Saskatchewan, Saskatoon, SK S7N 0X8, Canada; (S.P.K.); (B.T.); (A.C.T.); (C.A.N.)
| | - André Marette
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
- Institut sur la Nutrition et les Aliments Fonctionnels, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Allison McGeer
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON M5T 3M7, Canada; (B.L.C.); (A.M.)
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Patrick T. O’Shaughnessy
- Department of Occupational and Environmental Health, The University of Iowa, Iowa City, IA 52246, USA;
| | - E. Jane Parmley
- Canadian Wildlife Health Cooperative, University of Guelph, Guelph, ON N1G 2W1, Canada;
- Department of Population Medicine, University of Guelph, Guelph, ON N1G 2W1, Canada; (R.J.R.-S.); (M.P.M.)
| | - Serge Simard
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
| | - Richard J. Reid-Smith
- Department of Population Medicine, University of Guelph, Guelph, ON N1G 2W1, Canada; (R.J.R.-S.); (M.P.M.)
- Centre for Foodborne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, ON N1G 3W4, Canada; (C.P.M.); (D.O.-D.)
| | - Edward Topp
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, ON N5V 4T3, Canada;
- Department of Biology, The University of Western Ontario, London, ON N6A 5B7, Canada
| | - Luc Trudel
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
| | - Maosheng Yao
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China;
| | - Patrick Brassard
- Département des Sols et de Génie Agroalimentaire, Université Laval, Quebec City, QC G1V 0A6, Canada;
| | - Anne-Marie Delort
- Institut de Chimie de Clermont-Ferrand, SIGMA Clermont, CNRS, Université Clermont-Auvergne, 63178 Clermont-Ferrand, France; (P.A.); (A.-M.D.)
| | - Araceli D. Larios
- Institut de Recherche et de Développement en Agroenvironnement (IRDA), Quebec City, QC G1P 3W8, Canada; (S.G.); (A.D.L.); (A.K.C.D.)
- Tecnológico Nacional de México/ITS de Perote, Perote 91270, Mexico
| | - Valérie Létourneau
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
| | - Valérie E. Paquet
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Institut de Biologie Intégrative et des Systèmes, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Marie-Hélène Pedneau
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
| | - Émilie Pic
- Centre de Recherche en Infectiologie, Centre de Recherche du CHU de Québec-Université Laval, Axe Maladies Infectieuses et Immunitaires, Quebec City, QC G1V 4G2, Canada; (M.G.B.); (M.B.); (É.P.)
| | - Brooke Thompson
- Department of Medicine, University of Saskatchewan, Saskatoon, SK S7N 0X8, Canada; (S.P.K.); (B.T.); (A.C.T.); (C.A.N.)
| | - Marc Veillette
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
| | - Mary Thaler
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Institut de Biologie Intégrative et des Systèmes, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Ilaria Scapino
- Département de Médecine Moléculaire, Université Laval, Quebec City, QC G1V 0A6, Canada; (P.B.L.G.); (J.C.); (I.S.)
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
| | - Maria Lebeuf
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
| | - Mahsa Baghdadi
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
| | - Alejandra Castillo Toro
- Department of Medicine, University of Saskatchewan, Saskatoon, SK S7N 0X8, Canada; (S.P.K.); (B.T.); (A.C.T.); (C.A.N.)
| | - Amélia Bélanger Cayouette
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
| | - Marie-Julie Dubois
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
- Institut sur la Nutrition et les Aliments Fonctionnels, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Alicia F. Durocher
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
- Institut de Biologie Intégrative et des Systèmes, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Sarah B. Girard
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Institut de Biologie Intégrative et des Systèmes, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Andrea Katherín Carranza Diaz
- Institut de Recherche et de Développement en Agroenvironnement (IRDA), Quebec City, QC G1P 3W8, Canada; (S.G.); (A.D.L.); (A.K.C.D.)
- Département des Sols et de Génie Agroalimentaire, Université Laval, Quebec City, QC G1V 0A6, Canada;
| | - Asmaâ Khalloufi
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Research Chair in Meat Safety, Département de Pathologie et Microbiologie, Université de Montréal, Saint-Hyacinthe, QC J2S 2M2, Canada;
| | - Samantha Leclerc
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
| | - Joanie Lemieux
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
- Centre de Recherche en Infectiologie, Centre de Recherche du CHU de Québec-Université Laval, Axe Maladies Infectieuses et Immunitaires, Quebec City, QC G1V 4G2, Canada; (M.G.B.); (M.B.); (É.P.)
| | - Manuel Pérez Maldonado
- Department of Population Medicine, University of Guelph, Guelph, ON N1G 2W1, Canada; (R.J.R.-S.); (M.P.M.)
| | - Geneviève Pilon
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Colleen P. Murphy
- Centre for Foodborne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, ON N1G 3W4, Canada; (C.P.M.); (D.O.-D.)
| | - Charly A. Notling
- Department of Medicine, University of Saskatchewan, Saskatoon, SK S7N 0X8, Canada; (S.P.K.); (B.T.); (A.C.T.); (C.A.N.)
| | - Daniel Ofori-Darko
- Centre for Foodborne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, ON N1G 3W4, Canada; (C.P.M.); (D.O.-D.)
| | - Juliette Provencher
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Institut de Biologie Intégrative et des Systèmes, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Annabelle Richer-Fortin
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
| | - Nathalie Turgeon
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
| | - Caroline Duchaine
- Département de Biochimie, de Microbiologie et de Bio-Informatique, Université Laval, Quebec City, QC G1V 0A6, Canada; (F.R.); (M.-W.S.-G.); (S.J.C.); (A.I.C.); (L.T.); (V.E.P.); (M.T.); (M.B.); (A.B.C.); (A.F.D.); (S.B.G.); (A.K.); (S.L.); (J.L.); (J.P.); (A.R.-F.)
- Centre de Recherche de L’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada; (A.M.); (S.S.); (V.L.); (M.-H.P.); (M.V.); (M.L.); (M.-J.D.); (G.P.); (N.T.)
- Correspondence:
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21
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Barra Caracciolo A, Topp E, Udikovic-Kolic N, Grenni P. Editorial: Natural Microbial Communities and Their Response to Antibiotic Occurrence in Ecosystems. Front Microbiol 2022; 13:919316. [PMID: 35722275 PMCID: PMC9201907 DOI: 10.3389/fmicb.2022.919316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 04/28/2022] [Indexed: 11/23/2022] Open
Affiliation(s)
| | - Edward Topp
- Agriculture and Agri-Food Canada, London, ON, Canada
| | - Nikolina Udikovic-Kolic
- Environmental Microbiology and Biotechnology Lab, Rudjer Bošković Institute, Zagreb, Croatia
| | - Paola Grenni
- Water Research Institute of the National Research Council, Montelibretti, Italy
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22
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Subirats J, Sharpe H, Topp E. Fate of Clostridia and other spore-forming Firmicute bacteria during feedstock anaerobic digestion and aerobic composting. J Environ Manage 2022; 309:114643. [PMID: 35151135 DOI: 10.1016/j.jenvman.2022.114643] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 01/26/2022] [Accepted: 01/30/2022] [Indexed: 06/14/2023]
Abstract
Pathogenic spore-forming Firmicutes are commonly present in animal and human wastes that are used as fertilizers in crop production. Pre-treatments of organic waste prior to land application offer the potential to abate enteric microorganisms, and therefore reduce the risk of contamination of crops or adjacent water resources with pathogens carried in these materials. The inactivation and reduction of gram-positive spore formers such as Clostridium spp., Clostridioides spp. and Bacillus spp. from animal and human waste can be challenging given the recalcitrance of the spores these bacteria produce. Given the significance of these organisms to human and animal health, information concerning spore-forming bacteria inactivation during anaerobic digestion (AD) and aerobic composting (AC) is required as the basis for recommending safe organic waste management practices. In this review, an assessment of the inactivation of spore-forming Firmicutes during AD and AC was conducted to provide guidance for practical management of organic matrices of animal or human origin. Temperature and pH may be the main factors contributing to the inactivation of spore-forming Firmicutes during batch lab-scale AD (log reduction <0.5-5 log). In continuous digesters, wet AD systems do not effectively inactivate spore-forming Firmicutes even under thermopholic conditions (log reduction -1.09 - 0.98), but dry AD systems could be a feasible management practice to inactivate spore-forming Firmicutes from organic materials with high solid content (log reduction 1.77-3.1). In contrast, composting is an effective treatment to abate spore-forming Firmicutes (log reduction 1.7-6.5) when thermophilic conditions last at least six consecutive days. Temperature, moisture content and composting scale are the key operating conditions influencing the inactivation of spore-forming Firmicutes during composting. Where possible, undertaking AD with subsequent composting to ensure the biosafety of digestate before its downstream processing and recycling is recommended to abate recalcitrant bacteria in digestate.
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Affiliation(s)
- Jessica Subirats
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada; Department of Biology, University of Western Ontario, London, Ontario, Canada.
| | - Hannah Sharpe
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada; Department of Biology, University of Western Ontario, London, Ontario, Canada
| | - Edward Topp
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada; Department of Biology, University of Western Ontario, London, Ontario, Canada.
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23
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Rehman MA, Rempel H, Carrillo CD, Ziebell K, Allen K, Manges AR, Topp E, Diarra MS. Virulence Genotype and Phenotype of Multiple Antimicrobial-Resistant Escherichia coli Isolates from Broilers Assessed from a "One-Health" Perspective. J Food Prot 2022; 85:336-354. [PMID: 34762732 DOI: 10.4315/jfp-21-273] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 11/09/2021] [Indexed: 11/11/2022]
Abstract
ABSTRACT Extraintestinal pathogenic Escherichia coli (ExPEC) include several serotypes that have been associated with colibacillosis in poultry and with urinary tract infections (UTIs) and newborn meningitis in humans. In this study, 57 antimicrobial-resistant E. coli from apparently healthy broiler chickens were characterized for their health and safety risks. These isolates belonged to 12 serotypes, and isolates of the same serotype were clonal based on single nucleotide variant analysis. Most of the isolates harbored plasmids; IncC and IncFIA were frequently detected. The majority of the resistant isolates harbored plasmid-mediated resistance genes, including aph(3″)-Ib, aph(6)-Id, blaCMY-2, floR, sul1, sul2, tet(A), and tet(B), in agreement with their resistant phenotypes. The class 1 integron was detected in all E. coli serotypes except O124:H25 and O7:H6. Of the 57 broiler E. coli isolates, 27 were avian pathogenic, among which 18 were also uropathogenic E. coli and the remainder were other ExPEC. The two isolates of serotype O161:H4 (ST117) were genetically related to the control avian pathogenic strains and a clinical isolate associated with UTIs. A strain of serotype O159:H45 (ST101) also was closely related to a UTI isolate. The detected virulence factors included adhesins, invasins, siderophores, type III secretion systems, and toxins in combination with other virulence determinants. A broiler isolate of serotype O7:H18 (ST38) carried the ibeA gene encoding a protein involved in invasion of brain endothelium on a 102-kbp genetic island. This isolate moderately adhered and invaded Caco-2 cells and induced mortality (42.5%) in a day-old-chick infection model. The results of this study suggest that multiple antimicrobial-resistant E. coli isolates recovered from apparent healthy broilers can be pathogenic and act as reservoirs for antimicrobial resistance genes, highlighting the necessity of their assessment in a "One-Heath" context. HIGHLIGHTS
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Affiliation(s)
- Muhammad Attiq Rehman
- Guelph Research and Development Center, Agriculture and Agri-Food Canada, Guelph, Ontario, Canada N1G 5C9
| | - Heidi Rempel
- Agassiz Research and Development Center, Agriculture and Agri-Food Canada, Agassiz, British Columbia, Canada V0M 1A2
| | - Catherine D Carrillo
- Canadian Food Inspection Agency, Ottawa Laboratory (Carling), Ottawa, Ontario, Canada K1Y 4K7
| | - Kim Ziebell
- National Microbiology Laboratory, Public Health Agency Canada, Guelph, Ontario, Canada N1G 3W4
| | - Kevin Allen
- Faculty of Land and Food Systems, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4
| | - Amee R Manges
- School of Population and Public Health, University of British Columbia, British Columbia, Canada V6T 1Z3.,British Columbia Centre for Disease Control, Vancouver, British Columbia, Canada V5Z 4R4
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada N5V 4T3
| | - Moussa S Diarra
- Guelph Research and Development Center, Agriculture and Agri-Food Canada, Guelph, Ontario, Canada N1G 5C9
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24
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Haenni M, Dagot C, Chesneau O, Bibbal D, Labanowski J, Vialette M, Bouchard D, Martin-Laurent F, Calsat L, Nazaret S, Petit F, Pourcher AM, Togola A, Bachelot M, Topp E, Hocquet D. Environmental contamination in a high-income country (France) by antibiotics, antibiotic-resistant bacteria, and antibiotic resistance genes: Status and possible causes. Environ Int 2022; 159:107047. [PMID: 34923370 DOI: 10.1016/j.envint.2021.107047] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 12/09/2021] [Accepted: 12/11/2021] [Indexed: 06/14/2023]
Abstract
Antimicrobial resistance (AMR) is a major global public health concern, shared by a large number of human and animal health actors. Within the framework of a One Health approach, actions should be implemented in the environmental realm, as well as the human and animal realms. The Government of France commissioned a report to provide policy and decision makers with an evidential basis for recommending or taking future actions to mitigate AMR in the environment. We first examined the mechanisms that underlie the emergence and persistence of antimicrobial resistance in the environment. This report drew up an inventory of the contamination of aquatic and terrestrial environments by AMR and antibiotics, anticipating that the findings will be representative of some other high-income countries. Effluents of wastewater treatment plants were identified as the major source of contamination on French territory, with spreading of organic waste products as a more diffuse and incidental contamination of aquatic environments. A limitation of this review is the heterogeneity of available data in space and time, as well as the lack of data for certain sources. Comparing the French Measured Environmental Concentrations (MECs) with predicted no effect concentrations (PNECs), fluoroquinolones and trimethoprim were identified as representing high and medium risk of favoring the selection of resistant bacteria in treated wastewater and in the most contaminated rivers. All other antibiotic molecules analyzed (erythromycin, clarithromycin, azithromycin, tetracycline) were at low risk of resistance selection in those environments. However, the heterogeneity of the data available impairs their full exploitation. Consequently, we listed indicators to survey AMR and antibiotics in the environment and recommended the harmonization of sampling strategies and endpoints for analyses. Finally, the objectives and methods used for the present work could comprise a useful example for how national authorities of countries sharing common socio-geographic characteristics with France could seek to better understand and define the environmental dimension of AMR in their particular settings.
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Affiliation(s)
- Marisa Haenni
- Unité Antibiorésistance et Virulence Bactériennes, ANSES (French Agency for Food, Environmental and Occupational Health & Safety) - Université de Lyon, Lyon, France
| | - Christophe Dagot
- Université of Limoges, RESINFIT, UMR INSERM 1092, CHU, F-87000 Limoges, France
| | - Olivier Chesneau
- Collection de l'Institut Pasteur (CIP), Microbiology Department, Institut Pasteur, Paris, France
| | - Delphine Bibbal
- INTHERES, Université de Toulouse, INRAE, ENVT, Toulouse, France
| | - Jérôme Labanowski
- Université de Poitiers, UMR CNRS 7285 IC2MP, ENSI Poitiers, Poitiers, France
| | | | - Damien Bouchard
- National Agency for Veterinary Medicinal Products, ANSES, Fougères, France
| | | | - Louisiane Calsat
- Risk Assessment Department (DER), ANSES (French Agency for Food, Environmental and Occupational Health & Safety), Maisons-Alfort, France
| | - Sylvie Nazaret
- Université de Lyon, Université Claude Bernard Lyon 1, UMR CNRS 5557, UMR INRAE 1418, VetAgro Sup, Ecologie Microbienne, F-69622 Villeurbanne, France
| | - Fabienne Petit
- UNIROUEN, UNICAEN, CNRS, M2C, Normandie Université Rouen, France; Sorbonne Université, CNRS, EPHE, PSL, UMR METIS, Paris F-75005, France
| | | | | | - Morgane Bachelot
- ANSES (French Agency for Food, Environmental and Occupational Health & Safety), Maisons-Alfort, France
| | - Edward Topp
- Agriculture and Agri-Food Canada, and University of Western Ontario, London, ON, Canada
| | - Didier Hocquet
- UMR Chronoenvironnement CNRS 6249, Université de Bourgogne Franche-Comté, Besançon, France; Hygiène Hospitalière, Centre Hospitalier Universitaire, 25030 Besançon, France.
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25
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Scott A, Murray R, Tien YC, Topp E. Contamination of hay and haylage with enteric bacteria and selected antibiotic resistance genes following fertilization with dairy manure or biosolids. Can J Microbiol 2022; 68:249-257. [PMID: 35020524 DOI: 10.1139/cjm-2021-0326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The present study evaluated if enteric bacteria or antibiotic resistance genes carried in fecal amendments contaminate the hay at harvest, representing a potential route of exposure to ruminants that consume the hay. In field experiments, dairy manure was applied to a hay field for three successive growing seasons, and biosolids applied to a hay field for one growing season. Various enteric bacteria in the amendments were enumerated by viable plate count, and selected gene targets were quantified by qPCR. Key findings include the following: At harvest, hay receiving dairy manure or biosolids did not carry more viable enteric bacteria than did hay from unamended control plots. Fermentation of hay did not result in a detectable increase in viable enteric bacteria. The application of dairy manure or biosolids did result in a few gene targets being more abundant on hay at the first harvest. Fermentation of hay did result in an increase in the abundance of gene targets, but this occurred both with hay from amended and control plots. Overall, application of fecal amendments will result in an increase in the abundance of some gene targets associated with antibiotic resistance on first cut hay.
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Affiliation(s)
- Andrew Scott
- Agriculture and Agri-Food Canada, 6337, London, Ontario, Canada;
| | - Roger Murray
- Agriculture and Agri-Food Canada, 6337, London, Ontario, Canada;
| | - Yuan-Ching Tien
- Agriculture and Agri-Food Canada, 6337, London, Ontario, Canada;
| | - Edward Topp
- Agriculture and Agri-Food Canada, 6337, London, Canada;
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26
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Subirats J, Murray R, Yin X, Zhang T, Topp E. Impact of chicken litter pre-application treatment on the abundance, field persistence, and transfer of antibiotic resistant bacteria and antibiotic resistance genes to vegetables. Sci Total Environ 2021; 801:149718. [PMID: 34425441 DOI: 10.1016/j.scitotenv.2021.149718] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 08/12/2021] [Accepted: 08/13/2021] [Indexed: 06/13/2023]
Abstract
Treatment of manures prior to land application can potentially reduce the abundance of antibiotic resistance genes and thus the risk of contaminating crops or water resources. In this study, raw and composted chicken litter were applied to field plots that were cropped to carrots, lettuce and radishes. Vegetables were washed per normal culinary practice before downstream analysis. The impact of composting on manure microbial composition, persistence of antibiotic resistant bacteria in soil following application, and distribution of antibiotic resistance genes and bacteria on washed vegetables were determined. A subset of samples that were thought likely to reveal the most significant effects were chosen for shotgun sequencing. The absolute abundance of all target genes detected by qPCR decreased after composting except sul1, intI1, incW and erm(F) that remained stable. The shotgun sequencing revealed that some integron integrases were enriched by composting. Composting significantly reduced the abundance of enteric bacteria, including those carrying antibiotic resistance. Manure-amended soil showed significantly higher abundances of sul1, str(A), str(B), erm(B), aad(A), intI1 and incW compared to unmanured soil. At harvest, those genes that were detected in soil samples before the application of manure (intI1, sul1, strA and strB) were quantifiable by qPCR on vegetables, with a larger number of gene targets detected on the radishes than in the carrots or lettuce. Shotgun metagenomic sequencing suggested that the increase of antibiotic resistance genes on radishes produced in soil receiving raw manure may be due to changes to soil microbial communities following manure application, rather than transfer to the radishes of enteric bacteria. Overall, under field conditions there was limited evidence for transfer of antibiotic resistance genes from composted or raw manure to vegetables that then persisted through washing.
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Affiliation(s)
- Jessica Subirats
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada; Department of Biology, University of Western Ontario, London, Ontario, Canada
| | - Roger Murray
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada
| | - Xiaole Yin
- Environmental Biotechnology Lab, Department of Civil Engineering, The University of Hong Kong, Hong Kong, China
| | - Tong Zhang
- Environmental Biotechnology Lab, Department of Civil Engineering, The University of Hong Kong, Hong Kong, China
| | - Edward Topp
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada; Department of Biology, University of Western Ontario, London, Ontario, Canada.
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27
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Laskey A, Devenish J, Kang M, Savic M, Chmara J, Dan H, Lin M, Robertson J, Bessonov K, Gurnik S, Liu K, Nash JHE, Topp E, Guan J. Mobility of β-lactam resistance under ampicillin treatment in gut microbiota suffering from pre-disturbance. Microb Genom 2021; 7. [PMID: 34882531 PMCID: PMC8767350 DOI: 10.1099/mgen.0.000713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Ingestion of food- or waterborne antibiotic-resistant bacteria may lead to dissemination of antibiotic resistance genes (ARGs) in the gut microbiota. The gut microbiota often suffers from various disturbances. It is not clear whether and how disturbed microbiota may affect ARG mobility under antibiotic treatments. For proof of concept, in the presence or absence of streptomycin pre-treatment, mice were inoculated orally with a β-lactam-susceptible Salmonella enterica serovar Heidelberg clinical isolate (recipient) and a β-lactam resistant Escherichia coli O80:H26 isolate (donor) carrying a blaCMY-2 gene on an IncI2 plasmid. Immediately following inoculation, mice were treated with or without ampicillin in drinking water for 7 days. Faeces were sampled, donor, recipient and transconjugant were enumerated, blaCMY-2 abundance was determined by quantitative PCR, faecal microbial community composition was determined by 16S rRNA amplicon sequencing and cecal samples were observed histologically for evidence of inflammation. In faeces of mice that received streptomycin pre-treatment, the donor abundance remained high, and the abundance of S. Heidelberg transconjugant and the relative abundance of Enterobacteriaceae increased significantly during the ampicillin treatment. Co-blooming of the donor, transconjugant and commensal Enterobacteriaceae in the inflamed intestine promoted significantly (P<0.05) higher and possibly wider dissemination of the blaCMY-2 gene in the gut microbiota of mice that received the combination of streptomycin pre-treatment and ampicillin treatment (Str-Amp) compared to the other mice. Following cessation of the ampicillin treatment, faecal shedding of S. Heidelberg transconjugant persisted much longer from mice in the Str-Amp group compared to the other mice. In addition, only mice in the Str-Amp group shed a commensal E. coli O2:H6 transconjugant, which carries three copies of the blaCMY-2 gene, one on the IncI2 plasmid and two on the chromosome. The findings highlight the significance of pre-existing gut microbiota for ARG dissemination and persistence during and following antibiotic treatments of infectious diseases.
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Affiliation(s)
- Alexander Laskey
- Ottawa Laboratory-Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - John Devenish
- Ottawa Laboratory-Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - Mingsong Kang
- Ottawa Laboratory-Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - Mirjana Savic
- Ottawa Laboratory-Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - John Chmara
- Ottawa Laboratory-Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - Hanhong Dan
- Ottawa Laboratory-Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - Min Lin
- Ottawa Laboratory-Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - James Robertson
- National Microbiology Laboratory, Public Health Agency of Canada, Guelph, ON, Canada
| | - Kyrylo Bessonov
- National Microbiology Laboratory, Public Health Agency of Canada, Guelph, ON, Canada
| | - Simone Gurnik
- National Microbiology Laboratory, Public Health Agency of Canada, Guelph, ON, Canada
| | - Kira Liu
- National Microbiology Laboratory, Public Health Agency of Canada, Guelph, ON, Canada
| | - John H E Nash
- National Microbiology Laboratory, Public Health Agency of Canada, Guelph, ON, Canada
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
| | - Jiewen Guan
- Ottawa Laboratory-Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
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28
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Lyautey E, Bonnineau C, Billard P, Loizeau JL, Naffrechoux E, Tlili A, Topp E, Ferrari BJD, Pesce S. Diversity, Functions and Antibiotic Resistance of Sediment Microbial Communities From Lake Geneva Are Driven by the Spatial Distribution of Anthropogenic Contamination. Front Microbiol 2021; 12:738629. [PMID: 34733255 PMCID: PMC8560053 DOI: 10.3389/fmicb.2021.738629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/28/2021] [Indexed: 11/17/2022] Open
Abstract
Lake sediments are natural receptors for a wide range of anthropogenic contaminants including organic matter and toxicants such as trace metals, polycyclic aromatic hydrocarbons, polychlorinated biphenyls that accumulate over time. This contamination can impact benthic communities, including microorganisms which play a crucial role in biogeochemical cycling and food-webs. The present survey aimed at exploring whether anthropogenic contamination, at a large lake scale, can influence the diversity, structure and functions of microbial communities associated to surface sediment, as well as their genetic potential for resistance to metals and antibiotics. Changes in the characteristics of these communities were assessed in surface sediments collected in Lake Geneva from eight sampling sites in October 2017 and May 2018. These sampling sites were characterized by a large concentration range of metal and organic compound contamination. Variation between the two sampling periods were very limited for all sampling sites and measured microbial parameters. In contrast, spatial variations were observed, with two sites being distinct from each other, and from the other six sites. Benthic communities from the most contaminated sampling site (Vidy Bay, near the city of Lausanne) were characterized by the lowest bacterial and archaeal diversity, a distinct community composition, the highest abundance of antibiotic resistance genes and functional (respiration, denitrification, methanogenesis, phosphatase, and beta-glucosidase) activity levels. The second sampling site which is highly influenced by inputs from the Rhône River, exhibited low levels of diversity, a distinct community composition, high abundance of antibiotic resistance genes and the highest bacterial abundance. Overall, our results suggest that local anthropogenic contamination, including organic matter and toxicants, is a major driver of the diversity and functioning of sediment-microbial communities in Lake Geneva. This highlights the need to consider benthic microbial communities and a suite of complementary ecotoxicological endpoints for more effective environmental risk assessments of contaminants in lake sediments.
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Affiliation(s)
- Emilie Lyautey
- INRAE UR RiverLy, Villeurbanne, France.,INRAE, Université Savoie Mont Blanc, CARRTEL, Thonon-les-Bains, France
| | | | | | - Jean-Luc Loizeau
- Department F.A. Forel for Environmental and Aquatic Sciences, University of Geneva, Geneva, Switzerland
| | | | - Ahmed Tlili
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Edward Topp
- Agriculture and Agri-Food Canada, London, ON, Canada.,Department of Biology, University of Western Ontario, London, ON, Canada
| | - Benoît J D Ferrari
- Swiss Centre for Applied Ecotoxicology (Ecotox Centre), Lausanne, Switzerland
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29
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Zhang AN, Gaston JM, Dai CL, Zhao S, Poyet M, Groussin M, Yin X, Li LG, van Loosdrecht MCM, Topp E, Gillings MR, Hanage WP, Tiedje JM, Moniz K, Alm EJ, Zhang T. An omics-based framework for assessing the health risk of antimicrobial resistance genes. Nat Commun 2021; 12:4765. [PMID: 34362925 PMCID: PMC8346589 DOI: 10.1038/s41467-021-25096-3] [Citation(s) in RCA: 200] [Impact Index Per Article: 66.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Accepted: 07/23/2021] [Indexed: 12/24/2022] Open
Abstract
Antibiotic resistance genes (ARGs) are widespread among bacteria. However, not all ARGs pose serious threats to public health, highlighting the importance of identifying those that are high-risk. Here, we developed an ‘omics-based’ framework to evaluate ARG risk considering human-associated-enrichment, gene mobility, and host pathogenicity. Our framework classifies human-associated, mobile ARGs (3.6% of all ARGs) as the highest risk, which we further differentiate as ‘current threats’ (Rank I; 3%) - already present among pathogens - and ‘future threats’ (Rank II; 0.6%) - novel resistance emerging from non-pathogens. Our framework identified 73 ‘current threat’ ARG families. Of these, 35 were among the 37 high-risk ARGs proposed by the World Health Organization and other literature; the remaining 38 were significantly enriched in hospital plasmids. By evaluating all pathogen genomes released since framework construction, we confirmed that ARGs that recently transferred into pathogens were significantly enriched in Rank II (‘future threats’). Lastly, we applied the framework to gut microbiome genomes from fecal microbiota transplantation donors. We found that although ARGs were widespread (73% of genomes), only 8.9% of genomes contained high-risk ARGs. Our framework provides an easy-to-implement approach to identify current and future antimicrobial resistance threats, with potential clinical applications including reducing risk of microbiome-based interventions. Antibiotic resistance genes are common but not all are of high risk to human health. Here, the authors develop an omics-based framework for ranking genes by risk that incorporates level of enrichment in human associated environments, gene mobility, and host pathogenicity.
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Affiliation(s)
- An-Ni Zhang
- Environmental Microbiome Engineering and Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, Hong Kong SAR, China.,Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, USA
| | | | - Chengzhen L Dai
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, USA
| | - Shijie Zhao
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, USA
| | - Mathilde Poyet
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, USA.,Center for Microbiome Informatics and Therapeutics, Massachusetts Institute of Technology, Cambridge, USA.,The Broad Institute of MIT and Harvard, Cambridge, USA
| | - Mathieu Groussin
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, USA.,Center for Microbiome Informatics and Therapeutics, Massachusetts Institute of Technology, Cambridge, USA.,The Broad Institute of MIT and Harvard, Cambridge, USA
| | - Xiaole Yin
- Environmental Microbiome Engineering and Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, Hong Kong SAR, China
| | - Li-Guan Li
- Environmental Microbiome Engineering and Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, Hong Kong SAR, China
| | | | - Edward Topp
- London Research and Development Centre (LRDC), Agriculture and Agri-Food Canada, London, ON, Canada
| | - Michael R Gillings
- Department of Biological Sciences, Macquarie University, Sydney, NSW, Australia
| | - William P Hanage
- Center for Communicable Disease Dynamics, Department of Epidemiology, Harvard TH Chan School of Public Health, Boston, USA
| | - James M Tiedje
- Department of Plant, Soil and Microbial Sciences and of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, USA
| | - Katya Moniz
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, USA
| | - Eric J Alm
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, USA.,Center for Microbiome Informatics and Therapeutics, Massachusetts Institute of Technology, Cambridge, USA.,The Broad Institute of MIT and Harvard, Cambridge, USA
| | - Tong Zhang
- Environmental Microbiome Engineering and Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, Hong Kong SAR, China. .,School of Public Health, The University of Hong Kong, Hong Kong SAR, China. .,Center for Environmental Engineering Research, The University of Hong Kong, Hong Kong SAR, China.
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30
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Turcotte C, Thibodeau A, Quessy S, Topp E, Beauchamp G, Fravalo P, Archambault M, Gaucher ML. Impacts of Short-Term Antibiotic Withdrawal and Long-Term Judicious Antibiotic Use on Resistance Gene Abundance and Cecal Microbiota Composition on Commercial Broiler Chicken Farms in Québec. Front Vet Sci 2020; 7:547181. [PMID: 33409294 PMCID: PMC7779680 DOI: 10.3389/fvets.2020.547181] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 11/19/2020] [Indexed: 12/22/2022] Open
Abstract
The ever-increasing problem of antibiotic resistance makes routine use of antibiotics in animal production no longer considered as a reasonable and viable practice. The Chicken Farmers of Canada have developed and are implementing an Antimicrobial Use Reduction Strategy, which has the ultimate goal of eliminating the preventive use of medically important antibiotics in broiler chicken and turkey production. However, very little is known about the real overall impact of an antibiotic use reduction strategy in complex ecosystems, such as the bird intestine or the commercial broiler chicken farm. The main objectives of the present study were to compare the abundance of antibiotic resistance-encoding genes, characterize the intestinal microbiota composition, and evaluate the presence of Clostridium perfringens, in six commercial poultry farms adopting short-term antibiotic withdrawal and long-term judicious use strategy. Implementing an antibiotic-free program over a 15-months period did not reduce the abundance of many antibiotic resistance-encoding genes, whereas the judicious use of antibiotics over 6 years was found effective. The short-term antibiotic withdrawal and the long-term judicious use strategy altered the intestinal microbiota composition, with the Ruminococcaceae and Lachnospiraceae families being negatively impacted. These findings are in agreement with the lower production performance and with the increased C. perfringens populations observed for farms phasing out the use of antibiotics. Adopting a conventional rearing program on commercial broiler chicken farms selected for specific antibiotic resistance-encoding genes in many barns. This study highlights the potential impacts of different rearing programs in poultry production and will help guide future policies in order to reduce the use of antibiotics while maintaining production performance.
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Affiliation(s)
- Catherine Turcotte
- Research Chair in Meat Safety, Département de Pathologie et Microbiologie, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Alexandre Thibodeau
- Research Chair in Meat Safety, Département de Pathologie et Microbiologie, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Sylvain Quessy
- Research Chair in Meat Safety, Département de Pathologie et Microbiologie, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
- Department of Biology, University of Western Ontario, London, ON, Canada
| | - Guy Beauchamp
- Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Philippe Fravalo
- Research Chair in Meat Safety, Département de Pathologie et Microbiologie, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
- Pôle Agroalimentaire du Cnam, Conservatoire National des Arts et Métiers, Paris, France
| | - Marie Archambault
- Swine and Poultry Infectious Diseases Research Centre, Département de Pathologie et Microbiologie, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Marie-Lou Gaucher
- Research Chair in Meat Safety, Département de Pathologie et Microbiologie, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, QC, Canada
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31
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Khan IUH, Becker A, Cloutier M, Plötz M, Lapen DR, Wilkes G, Topp E, Abdulmawjood A. Loop-mediated isothermal amplification: Development, validation and application of simple and rapid assays for quantitative detection of species of Arcobacteraceae family- and species-specific Aliarcobacter faecis and Aliarcobacter lanthieri. J Appl Microbiol 2020; 131:288-299. [PMID: 33174331 PMCID: PMC8359143 DOI: 10.1111/jam.14926] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 11/04/2020] [Accepted: 11/05/2020] [Indexed: 11/29/2022]
Abstract
Aim The family Arcobacteraceae formerly genus Arcobacter has recently been reclassified into six genera. Among nine species of the genus Aliarcobacter, Aliarcobacter faecis and Aliarcobacter lanthieri have been identified as emerging pathogens potentially cause health risks to humans and animals. This study was designed to develop/optimize, validate and apply Arcobacteraceae family‐ and two species‐specific (A. faecis and A. lanthieri) loop‐mediated isothermal amplification (LAMP) assays to rapidly detect and quantify total number of cells in various environmental niches. Methods and Results Three sets of LAMP primers were designed from conserved and variable regions of 16S rRNA (family‐specific) and gyrB (species‐specific) genes. Optimized Arcobacteraceae family‐specific LAMP assay correctly amplified and detected 24 species, whereas species‐specific LAMP assays detected A. faecis and A. lanthieri reference strains as well as 91 pure and mixed culture isolates recovered from aquatic and faecal sources. The specificity of LAMP amplification of A. faecis and A. lanthieri was further confirmed by restriction fragment length polymorphism analysis. Assay sensitivities were tested using variable DNA concentrations extracted from simulated target species cells in an autoclaved agricultural water sample by achieving a minimum detection limit of 10 cells mL−1 (10 fg). Direct DNA‐based quantitative detection, from agricultural surface water, identified A. faecis (17%) and A. lanthieri (1%) at a low frequency compared to family‐level (93%) with the concentration ranging from 2·1 × 101 to 2·2 × 105 cells 100 mL−1. Conclusions Overall, these three DNA‐based rapid and cost‐effective novel LAMP assays are sensitive and can be completed in less than 40 min. They have potential for on‐site quantitative detection of species of family Arcobacteraceae, A. faecis and A. lanthieri in food, environmental and clinical matrices. Significance and Impact of the Study The newly developed LAMP assays are specific, sensitive, accurate with higher reproducibility that have potential to facilitate in a less equipped lab setting and can help in early quantitative detection and rate of prevalence in environmental niches. The assays can be adopted in the diagnostic labs and epidemiological studies.
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Affiliation(s)
- I U H Khan
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - A Becker
- Institute of Food Quality and Food Safety, Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Foundation, Hannover, Germany
| | - M Cloutier
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - M Plötz
- Institute of Food Quality and Food Safety, Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Foundation, Hannover, Germany
| | - D R Lapen
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - G Wilkes
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, Ottawa, ON, Canada.,Natural Resources Canada, Ottawa, ON, Canada
| | - E Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
| | - A Abdulmawjood
- Institute of Food Quality and Food Safety, Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Foundation, Hannover, Germany
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32
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Subirats J, Murray R, Scott A, Lau CHF, Topp E. Composting of chicken litter from commercial broiler farms reduces the abundance of viable enteric bacteria, Firmicutes, and selected antibiotic resistance genes. Sci Total Environ 2020; 746:141113. [PMID: 32768779 DOI: 10.1016/j.scitotenv.2020.141113] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/16/2020] [Accepted: 07/18/2020] [Indexed: 06/11/2023]
Abstract
We examined the ability of composting to remove ARGs and enteric bacteria in litter obtained from broiler chickens fed with a diet supplemented with Bacitracin methylene disalicylate (BDM) (conventional chicken litter), or an antibiotic-free diet (raised without antibiotic (RWA) chicken litter). This was done by evaluating the litter before and after composting for the abundance of ten gene targets associated with antibiotic resistance or horizontal gene transfer, the composition of the bacterial communities, and the abundance of viable enteric bacteria. The abundance of gene targets was determined by qPCR and the microbial community composition of chicken litter determined by 16S rRNA gene amplicon sequencing. Enteric bacteria were enumerated by viable plate count. A majority of the gene targets were more abundant in conventional than in RWA litter. In both litter types, the absolute abundance of all of the target genes decreased after composting except sul1, intI1, incW and erm(F) that remained stable. Composting significantly reduced the abundance of enteric bacteria, including those carrying antibiotic resistance. The major difference in bacterial community composition between conventional and RWA litter was due to members affiliated to the genus Pseudomonas, which were 28% more abundant in conventional than in RWA litter. Composting favoured the presence of thermophilic bacteria, such as those affiliated with the genus Truepera, but decreased the abundance of those bacterial genera associated with cold-adapted species, such as Carnobacterium, Psychrobacter and Oceanisphaera. The present study shows that chicken litter from broilers fed with a diet supplemented with antibiotic has an increased abundance of some ARGs, even after composting. However, we can conclude that fertilization with composted litter represents a reduced risk of transmission of antibiotic resistance genes and enteric bacteria of poultry origin to soil and crops than will fertilization with raw litter.
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Affiliation(s)
- Jessica Subirats
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada; Department of Biology, University of Western Ontario, London, Ontario, Canada
| | - Roger Murray
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada
| | - Andrew Scott
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada
| | - Calvin Ho-Fung Lau
- Canadian Food Inspection Agency, 960 Carling Avenue, Ottawa, Ontario, Canada
| | - Edward Topp
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, Ontario, Canada; Department of Biology, University of Western Ontario, London, Ontario, Canada.
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33
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Marano RBM, Fernandes T, Manaia CM, Nunes O, Morrison D, Berendonk TU, Kreuzinger N, Tenson T, Corno G, Fatta-Kassinos D, Merlin C, Topp E, Jurkevitch E, Henn L, Scott A, Heß S, Slipko K, Laht M, Kisand V, Di Cesare A, Karaolia P, Michael SG, Petre AL, Rosal R, Pruden A, Riquelme V, Agüera A, Esteban B, Luczkiewicz A, Kalinowska A, Leonard A, Gaze WH, Adegoke AA, Stenstrom TA, Pollice A, Salerno C, Schwermer CU, Krzeminski P, Guilloteau H, Donner E, Drigo B, Libralato G, Guida M, Bürgmann H, Beck K, Garelick H, Tacão M, Henriques I, Martínez-Alcalá I, Guillén-Navarro JM, Popowska M, Piotrowska M, Quintela-Baluja M, Bunce JT, Polo-López MI, Nahim-Granados S, Pons MN, Milakovic M, Udikovic-Kolic N, Ory J, Ousmane T, Caballero P, Oliver A, Rodriguez-Mozaz S, Balcazar JL, Jäger T, Schwartz T, Yang Y, Zou S, Lee Y, Yoon Y, Herzog B, Mayrhofer H, Prakash O, Nimonkar Y, Heath E, Baraniak A, Abreu-Silva J, Choudhury M, Munoz LP, Krizanovic S, Brunetti G, Maile-Moskowitz A, Brown C, Cytryn E. A global multinational survey of cefotaxime-resistant coliforms in urban wastewater treatment plants. Environ Int 2020; 144:106035. [PMID: 32835921 DOI: 10.1016/j.envint.2020.106035] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 08/02/2020] [Accepted: 08/03/2020] [Indexed: 05/29/2023]
Abstract
The World Health Organization Global Action Plan recommends integrated surveillance programs as crucial strategies for monitoring antibiotic resistance. Although several national surveillance programs are in place for clinical and veterinary settings, no such schemes exist for monitoring antibiotic-resistant bacteria in the environment. In this transnational study, we developed, validated, and tested a low-cost surveillance and easy to implement approach to evaluate antibiotic resistance in wastewater treatment plants (WWTPs) by targeting cefotaxime-resistant (CTX-R) coliforms as indicators. The rationale for this approach was: i) coliform quantification methods are internationally accepted as indicators of fecal contamination in recreational waters and are therefore routinely applied in analytical labs; ii) CTX-R coliforms are clinically relevant, associated with extended-spectrum β-lactamases (ESBLs), and are rare in pristine environments. We analyzed 57 WWTPs in 22 countries across Europe, Asia, Africa, Australia, and North America. CTX-R coliforms were ubiquitous in raw sewage and their relative abundance varied significantly (<0.1% to 38.3%), being positively correlated (p < 0.001) with regional atmospheric temperatures. Although most WWTPs removed large proportions of CTX-R coliforms, loads over 103 colony-forming units per mL were occasionally observed in final effluents. We demonstrate that CTX-R coliform monitoring is a feasible and affordable approach to assess wastewater antibiotic resistance status.
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Affiliation(s)
- Roberto B M Marano
- Department of Agroecology and Plant Health, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel; Department of Soil Chemistry, Plant Nutrition and Microbiology, Institute of Soil Water and Environmental Sciences, Volcani Center, Agricultural Research Organization, Rishon Lezion, Israel
| | - Telma Fernandes
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital, 172, 4200-374 Porto, Portugal
| | - Célia M Manaia
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital, 172, 4200-374 Porto, Portugal
| | - Olga Nunes
- LEPABE, Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Donald Morrison
- School Applied Sciences, Edinburgh Napier University, EH11 4BN, UK
| | | | - Norbert Kreuzinger
- Vienna University of Technology, Institute for Water Quality and Resources Management, Vienna, Austria
| | - Tanel Tenson
- Institute of Technology, University of Tartu, Estonia
| | - Gianluca Corno
- CNR-IRSA Molecular Ecology Group, Largo Tonolli 50, 28922 Verbania, Italy
| | - Despo Fatta-Kassinos
- Civil and Environmental Engineering Department and Nireas International Water Research Center, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus
| | | | - Edward Topp
- Agriculture and Agri-Food Canada, London Research and Development Centre (ON), Canada; Department of Biology, University of Western Ontario, London, ON, Canada
| | - Edouard Jurkevitch
- Department of Agroecology and Plant Health, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Leonie Henn
- School Applied Sciences, Edinburgh Napier University, EH11 4BN, UK
| | - Andrew Scott
- Agriculture and Agri-Food Canada, London Research and Development Centre (ON), Canada
| | - Stefanie Heß
- Institute of Hydrobiology, TU Dresden, Dresden, Germany; Institute of Microbiology, TU Dresden, Dresden, Germany
| | - Katarzyna Slipko
- Vienna University of Technology, Institute for Water Quality and Resources Management, Vienna, Austria
| | - Mailis Laht
- Institute of Technology, University of Tartu, Estonia; Estonian Environmental Research Centre, Estonia
| | - Veljo Kisand
- Institute of Technology, University of Tartu, Estonia
| | - Andrea Di Cesare
- CNR-IRSA Molecular Ecology Group, Largo Tonolli 50, 28922 Verbania, Italy
| | - Popi Karaolia
- Civil and Environmental Engineering Department and Nireas International Water Research Center, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus
| | - Stella G Michael
- Civil and Environmental Engineering Department and Nireas International Water Research Center, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus
| | - Alice L Petre
- Department of Chemical Engineering, University of Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Roberto Rosal
- Department of Chemical Engineering, University of Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Amy Pruden
- Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Virginia Riquelme
- Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Ana Agüera
- Solar Energy Research Centre (CIESOL), Joint Centre University of Almería-CIEMAT, 04120 Almería, Spain
| | - Belen Esteban
- Solar Energy Research Centre (CIESOL), Joint Centre University of Almería-CIEMAT, 04120 Almería, Spain
| | - Aneta Luczkiewicz
- Faculty of Civil and Environmental Engineering, Gdansk University of Technology, G. Narutowicza 11/12 street, 80-233 Gdańsk, Poland
| | - Agnieszka Kalinowska
- Faculty of Civil and Environmental Engineering, Gdansk University of Technology, G. Narutowicza 11/12 street, 80-233 Gdańsk, Poland
| | - Anne Leonard
- University of Exeter Medical School, European Centre for Environment and Human Health, Environment and Sustainability Institute, University of Exeter, Penryn campus, TR10 9FE, UK
| | - William H Gaze
- University of Exeter Medical School, European Centre for Environment and Human Health, Environment and Sustainability Institute, University of Exeter, Penryn campus, TR10 9FE, UK
| | - Anthony A Adegoke
- Institute for Water and Wastewater Technology, Durban University of Technology, Durban South Africa; Department of Microbiology, University of Uyo, Uyo, Nigeria
| | - Thor A Stenstrom
- Institute for Water and Wastewater Technology, Durban University of Technology, Durban South Africa
| | | | | | - Carsten U Schwermer
- Norwegian Institute for Water Research, Gaustadalléen 21, N-0349 Oslo, Norway
| | - Pawel Krzeminski
- Norwegian Institute for Water Research, Gaustadalléen 21, N-0349 Oslo, Norway
| | | | - Erica Donner
- Future Industries Institute, University of South Australia, Adelaide, SA 5001, Australia
| | - Barbara Drigo
- Future Industries Institute, University of South Australia, Adelaide, SA 5001, Australia
| | - Giovanni Libralato
- Department of Biology, University of Naples Federico II, via Cinthia 21, 80126 Naples, Italy
| | - Marco Guida
- Department of Biology, University of Naples Federico II, via Cinthia 21, 80126 Naples, Italy
| | - Helmut Bürgmann
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 6047 Kastanienbaum, Switzerland
| | - Karin Beck
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 6047 Kastanienbaum, Switzerland
| | - Hemda Garelick
- Department of Natural Sciences, Middlesex University, London NW4 4BT, UK
| | - Marta Tacão
- CESAM and Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193, Portugal
| | - Isabel Henriques
- CESAM and Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193, Portugal; University of Coimbra, Department of Life Sciences, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Isabel Martínez-Alcalá
- Department of Civil Engineering, Av. de los Jerónimos, 135, 30107 Guadalupe, Murcia, Spain
| | - Jose M Guillén-Navarro
- Department of Civil Engineering, Av. de los Jerónimos, 135, 30107 Guadalupe, Murcia, Spain
| | - Magdalena Popowska
- Institute of Microbiology, Department of Applied Microbiology, Faculty of Biology, University of Warsaw, Poland
| | - Marta Piotrowska
- Institute of Microbiology, Department of Applied Microbiology, Faculty of Biology, University of Warsaw, Poland
| | | | - Joshua T Bunce
- School of Engineering, Newcastle University, Newcastle Upon Tyne, UK
| | - Maria I Polo-López
- Solar Energy Research Centre (CIESOL), Joint Centre University of Almería-CIEMAT, 04120 Almería, Spain; Plataforma Solar de Almería - CIEMAT, P.O. Box 22, 04200 Tabernas, Almería, Spain
| | - Samira Nahim-Granados
- Solar Energy Research Centre (CIESOL), Joint Centre University of Almería-CIEMAT, 04120 Almería, Spain; Plataforma Solar de Almería - CIEMAT, P.O. Box 22, 04200 Tabernas, Almería, Spain
| | | | | | | | - Jérôme Ory
- Laboratoire "Microorganisme: Génome et Environnement", Université Clermont Auvergne, BP 10448, F-63000 Clermont-Ferrand, France; CNRS, UMR 6023, LMGE, F-63170 Campus Universitaire des Cézeaux, Clermont-Ferrand, France; Service d'hygiène hospitalière, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Traore Ousmane
- Laboratoire "Microorganisme: Génome et Environnement", Université Clermont Auvergne, BP 10448, F-63000 Clermont-Ferrand, France; CNRS, UMR 6023, LMGE, F-63170 Campus Universitaire des Cézeaux, Clermont-Ferrand, France; Service d'hygiène hospitalière, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | | | - Antoni Oliver
- Laboratori EMATSA, Ctra Valls Km 3, 43130 Tarragona, Spain
| | | | - Jose L Balcazar
- Catalan Institute for Water Research (ICRA), 17003 Girona, Spain
| | - Thomas Jäger
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany
| | - Thomas Schwartz
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany
| | - Ying Yang
- School of Marine Sciences, Sun Yat-sen University, Guangzhou, China
| | - Shichun Zou
- School of Marine Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yunho Lee
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Younggun Yoon
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Bastian Herzog
- Chair of Urban Water Systems Engineering, Technical University of Munich (TUM), Germany
| | - Heidrun Mayrhofer
- Chair of Urban Water Systems Engineering, Technical University of Munich (TUM), Germany
| | - Om Prakash
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science, Pune 411007, India
| | - Yogesh Nimonkar
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science, Pune 411007, India
| | - Ester Heath
- Jozef Stefan Institute, Jamova 39 1000 Ljubljana, Slovenia
| | - Anna Baraniak
- National Medicines Institute, Department of Molecular Microbiology, Chelmska 30/34, 00-725 Warsaw, Poland
| | - Joana Abreu-Silva
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital, 172, 4200-374 Porto, Portugal
| | - Manika Choudhury
- Department of Natural Sciences, Middlesex University, London NW4 4BT, UK
| | - Leonardo P Munoz
- Department of Natural Sciences, Middlesex University, London NW4 4BT, UK
| | | | - Gianluca Brunetti
- Future Industries Institute, University of South Australia, Adelaide, SA 5001, Australia
| | | | - Connor Brown
- Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Eddie Cytryn
- Department of Soil Chemistry, Plant Nutrition and Microbiology, Institute of Soil Water and Environmental Sciences, Volcani Center, Agricultural Research Organization, Rishon Lezion, Israel.
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Lau CHF, Tien YC, Stedtfeld RD, Topp E. Impacts of multi-year field exposure of agricultural soil to macrolide antibiotics on the abundance of antibiotic resistance genes and selected mobile genetic elements. Sci Total Environ 2020; 727:138520. [PMID: 32330714 DOI: 10.1016/j.scitotenv.2020.138520] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/03/2020] [Accepted: 04/05/2020] [Indexed: 06/11/2023]
Abstract
Exposure of environmental bacteria to antibiotics may be increasing the global resistome. Antibiotic residues are entrained into agricultural soil through the application of animal and human wastes, and irrigation with reclaimed water. The impact of a mixture of three macrolide antibiotics on the abundance of selected genes associated with antibiotic resistance and genetic mobility were determined in a long-term field experiment undertaken in London, Canada. Replicated plots received annual applications of a mixture of erythromycin, clarithromycin and azithromycin every spring since 2010. Each antibiotic was added directly to the soil at a concentration of either 0.1 or 10 mg kg soil-1 and all plots were cropped to soybeans. By means of qPCR, no gene targets were enriched in soil exposed to the 0.1 mg kg soil-1 dose compared to untreated control. In contrast, the relative abundance of several gene targets including int1, sul2 and mphE increased significantly with the annual exposure to the 10 mg kg soil-1 dose. By means of high-throughput qPCR, numerous gene targets associated with resistance to aminoglycosides, sulfonamides, trimethoprim, streptomycin, quaternary ammonium chemicals as well as mobile genetic elements (tnpA, IS26 and IS6100) were detected in soil exposed to 10 mg kg soil-1, but not the lower dose. Overall, exposure of soil to macrolide antibiotics increased the relative abundance of numerous gene targets associated with resistance to macrolides and other antibiotics, and mobile genetic elements. This occurred at an exposure dose that is unrealistically high, but did not occur at the lower more realistic exposure dose.
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Affiliation(s)
- Calvin Ho-Fung Lau
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
| | - Yuan-Ching Tien
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
| | - Robert D Stedtfeld
- Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI, USA
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada; Department of Biology, University of Western Ontario, London, ON, Canada.
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35
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Zhang T, Fukuda K, Topp E, Zhu YG, Smalla K, Tiedje JM, Larsson DGJ. Editorial: The Environmental Dimension of Antibiotic Resistance. FEMS Microbiol Ecol 2020; 96:5871492. [DOI: 10.1093/femsec/fiaa130] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 01/10/2023] Open
Affiliation(s)
- Tong Zhang
- Department of Civil Engineering, The University of Hong Kong, Hong Kong, China
| | - Keiji Fukuda
- School of Public Health, The University of Hong Kong, Hong Kong, China
| | - Edward Topp
- Agriculture and Agri-Food Canada, Department of Biology, University of Western Ontario, London, Canada
| | - Yong-Guan Zhu
- Institute of Urban Environmenta, Chinese Academy of Science, Xiamen, China
| | - Kornelia Smalla
- Julius Kühn-Institut, Federal Research Centre for Cultivated Plants, Institute for Epidemiology and Pathogen Diagnostics, Braunschweig, Germany
| | - James M Tiedje
- The Center for Microbial Ecology, Michigan State University, East Lansing, Michigan, USA
| | - D G Joakim Larsson
- Department of Infectious Disease, Centre for Antibiotic Resistance Research, University of Gothenburg, Gothenburg, Sweden
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36
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Laskey A, Ottenbrite M, Devenish J, Kang M, Savic M, Nadin-Davis S, Chmara J, Lin M, Robertson J, Bessonov K, Gurnik S, Liu K, Nash JHE, Scott A, Topp E, Guan J. Mobility of β-Lactam Resistance Under Bacterial Co-infection and Ampicillin Treatment in a Mouse Model. Front Microbiol 2020; 11:1591. [PMID: 32733428 PMCID: PMC7358583 DOI: 10.3389/fmicb.2020.01591] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/17/2020] [Indexed: 01/21/2023] Open
Abstract
Ingestion of food- or waterborne antibiotic-resistant bacteria may lead to the dissemination of antibiotic-resistance genes in the gut microbiota and the development of antibiotic-resistant bacterial infection, a significant threat to animal and public health. Food or water may be contaminated with multiple resistant bacteria, but animal models on gene transfer were mainly based on single-strain infections. In this study, we investigated the mobility of β-lactam resistance following infection with single- versus multi-strain of resistant bacteria under ampicillin treatment. We characterized three bacterial strains isolated from food-animal production systems, Escherichia coli O80:H26 and Salmonella enterica serovars Bredeney and Heidelberg. Each strain carries at least one conjugative plasmid that encodes a β-lactamase. We orally infected mice with each or all three bacterial strain(s) in the presence or absence of ampicillin treatment. We assessed plasmid transfer from the three donor bacteria to an introduced E. coli CV601gfp recipient in the mouse gut, and evaluated the impacts of the bacterial infection on gut microbiota and gut health. In the absence of ampicillin treatment, none of the donor or recipient bacteria established in the normal gut microbiota and plasmid transfer was not detected. In contrast, the ampicillin treatment disrupted the gut microbiota and enabled S. Bredeney and Heidelberg to colonize and transfer their plasmids to the E. coli CV601gfp recipient. E. coli O80:H26 on its own failed to colonize the mouse gut. However, during co-infection with the two Salmonella strains, E. coli O80:H26 colonized and transferred its plasmid to the E. coli CV601gfp recipient and a residential E. coli O2:H6 strain. The co-infection significantly increased plasmid transfer frequency, enhanced Proteobacteria expansion and resulted in inflammation in the mouse gut. Our findings suggest that single-strain infection models for evaluating in vivo gene transfer may underrepresent the consequences of multi-strain infections following the consumption of heavily contaminated food or water.
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Affiliation(s)
- Alexander Laskey
- Ottawa Laboratory, Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - Marie Ottenbrite
- Ottawa Laboratory, Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - John Devenish
- Ottawa Laboratory, Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - Mingsong Kang
- Ottawa Laboratory, Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - Mirjana Savic
- Ottawa Laboratory, Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - Susan Nadin-Davis
- Ottawa Laboratory, Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - John Chmara
- Ottawa Laboratory, Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - Min Lin
- Ottawa Laboratory, Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - James Robertson
- National Microbiology Laboratory, Public Health Agency of Canada, Guelph, ON, Canada
| | - Kyrylo Bessonov
- National Microbiology Laboratory, Public Health Agency of Canada, Guelph, ON, Canada
| | - Simone Gurnik
- National Microbiology Laboratory, Public Health Agency of Canada, Guelph, ON, Canada
| | - Kira Liu
- National Microbiology Laboratory, Public Health Agency of Canada, Guelph, ON, Canada
| | - John H. E. Nash
- National Microbiology Laboratory, Public Health Agency of Canada, Guelph, ON, Canada
| | - Andrew Scott
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
| | - Jiewen Guan
- Ottawa Laboratory, Fallowfield, Canadian Food Inspection Agency, Ottawa, ON, Canada
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Affiliation(s)
| | - Jean-François Ghiglione
- CNRS, UMR 7621 Laboratoire d'Océanographie Microbienne, Sorbonne Université, Observatoire Océanologique de Banyuls-sur-Mer, Banyuls-sur-Mer, France
| | - Edward Topp
- Agriculture and Agri-Food Canada, University of Western Ontario, London, ON, Canada
| | - Fabrice Martin-Laurent
- AgroSup Dijon, INRAE, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, Agroécologie, Dijon, France
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38
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Miltenburg MG, Cloutier M, Craiovan E, Lapen DR, Wilkes G, Topp E, Khan IUH. Real-time quantitative PCR assay development and application for assessment of agricultural surface water and various fecal matter for prevalence of Aliarcobacter faecis and Aliarcobacter lanthieri. BMC Microbiol 2020; 20:164. [PMID: 32546238 PMCID: PMC7298852 DOI: 10.1186/s12866-020-01826-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 05/18/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Aliarcobacter faecis and Aliarcobacter lanthieri are recently identified as emerging human and animal pathogens. In this paper, we demonstrate the development and optimization of two direct DNA-based quantitative real-time PCR assays using species-specific oligonucleotide primer pairs derived from rpoB and gyrA genes for A. faecis and A. lanthieri, respectively. Initially, the specificity of primers and amplicon size of each target reference strain was verified and confirmed by melt curve analysis. Standard curves were developed with a minimum quantification limit of 100 cells mL- 1 or g- 1 obtained using known quantities of spiked A. faecis and A. lanthieri reference strains in autoclaved agricultural surface water and dairy cow manure samples. RESULTS Each species-specific qPCR assay was validated and applied to determine the rate of prevalence and quantify the total number of cells of each target species in natural surface waters of an agriculturally-dominant and non-agricultural reference watershed. In addition, the prevalence and densities were determined for human and various animal (e.g., dogs, cats, dairy cow, and poultry) fecal samples. Overall, the prevalence of A. faecis for surface water and feces was 21 and 28%, respectively. The maximum A. faecis concentration for water and feces was 2.3 × 107 cells 100 mL- 1 and 1.2 × 107 cells g- 1, respectively. A. lanthieri was detected at a lower frequency (2%) with a maximum concentration in surface water of 4.2 × 105 cells 100 mL- 1; fecal samples had a prevalence and maximum density of 10% and 2.0 × 106 cells g- 1, respectively. CONCLUSIONS The results indicate that the occurrence of these species in agricultural surface water is potentially due to fecal contamination of water from livestock, human, or wildlife as both species were detected in fecal samples. The new real-time qPCR assays can facilitate rapid and accurate detection in < 3 h to quantify total numbers of A. faecis and A. lanthieri cells present in various complex environmental samples.
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Affiliation(s)
- Mary G Miltenburg
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave, Ottawa, Ontario, K1A 0C6, Canada.,Canadian Food Inspection Agency (CFIA), Ottawa, ON, Canada
| | - Michel Cloutier
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave, Ottawa, Ontario, K1A 0C6, Canada
| | - Emilia Craiovan
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave, Ottawa, Ontario, K1A 0C6, Canada
| | - David R Lapen
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave, Ottawa, Ontario, K1A 0C6, Canada
| | - Graham Wilkes
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave, Ottawa, Ontario, K1A 0C6, Canada.,Natural Resources Canada, Ottawa, ON, Canada
| | - Edward Topp
- London Research and Development Centre (LRDC), Agriculture and Agri-Food Canada, London, ON, Canada
| | - Izhar U H Khan
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave, Ottawa, Ontario, K1A 0C6, Canada.
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Kahn LH, Bergeron G, Bourassa MW, De Vegt B, Gill J, Gomes F, Malouin F, Opengart K, Ritter GD, Singer RS, Storrs C, Topp E. From farm management to bacteriophage therapy: strategies to reduce antibiotic use in animal agriculture. Ann N Y Acad Sci 2020; 1441:31-39. [PMID: 30924542 PMCID: PMC6850639 DOI: 10.1111/nyas.14034] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/18/2019] [Accepted: 01/30/2019] [Indexed: 12/20/2022]
Abstract
To reduce the use of antibiotics in animal agriculture, a number of effective or commercially viable alternatives have been implemented by food animal producers or are under development. Perhaps the most well-established strategies are flock and herd management practices to mitigate disease introduction and spread, and, subsequently, reduce the need for antibiotic use. While vaccines in food animal production have been used to prevent both bacterial and viral diseases, but historically, most vaccines have targeted viral diseases. Though vaccines against viral diseases can help reduce the need for antibiotic use by controlling the spread of secondary bacterial infections, more recent vaccines under development specifically target bacteria. New developments in selecting and potentially tailoring bacteriophages provide a promising avenue for controlling pathogenic bacteria without the need for traditional small-molecule antibiotics. In this article we discuss these established and emerging strategies, which are anticipated to reduce the reliance on antibiotics in food animal production and should reduce the prevalence and transmission to humans of antimicrobial resistant bacteria from these systems.
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Affiliation(s)
- Laura H Kahn
- Woodrow Wilson School of Public and International Affairs, Princeton University, Princeton, New Jersey
| | | | | | - Bert De Vegt
- Micreos Food Safety, Wageningen, the Netherlands
| | - Jason Gill
- Department of Animal Science, Texas A&M University, College Station, Texas
| | - Filomena Gomes
- The New York Academy of Sciences, New York City, New York
| | | | | | | | | | | | - Edward Topp
- University of Western Ontario and Agriculture and Agri-Food Canada, London, Ontario, Canada
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40
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Lau CHF, DeJong EN, Dussault F, Carrillo C, Stogios PJ, Savchenko A, Topp E. A penicillin-binding protein that can promote advanced-generation cephalosporin resistance and genome adaptation in the opportunistic pathogen Pseudomonas aeruginosa. Int J Antimicrob Agents 2020; 55:105896. [PMID: 31927042 DOI: 10.1016/j.ijantimicag.2020.105896] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 12/16/2019] [Accepted: 01/04/2020] [Indexed: 11/28/2022]
Abstract
A previous soil metagenomics study recovered a novel cephalosporin resistance determinant, pbpTET A6, for which the exact resistance mechanism was unclear. This study used a three-dimensional structure-guided mutagenesis approach to demonstrate that PBPTET A6 is likely to be a class A penicillin-binding protein (PBP), and that its ability to confer cephalosporin resistance is directly linked to the functional integrity of its transpeptidase (TP) catalytic core. Screening of a library of PBPTET A6 variants carrying randomly introduced point mutations revealed additional residue modifications that compromised resistance, all of which were proximal to the TP active site except one which was found in a 29-amino-acid-long superstructure (α6-α7 loop) absent in other class A PBP homologues. Based on the site-specific mutagenesis results, it is hypothesized that residue arginine-400 plays an important role in limiting the access of certain cephalosporin compounds to the enzymatic core of the TP domain of PBPTET A6. Using a combination of adaptive evolution assays and whole-genome sequencing, the potential impact of PBPTET A6 on promoting the development of resistance in the clinically significant opportunistic pathogen Pseudomonas aeruginosa was investigated. Under the selective pressure of serial ceftazidime exposures, the pbpTET A6-expressing P. aeruginosa population readily evolved by excluding a ~400-kbp chromosomal element to acquire additional resistance against cephalosporins, suggesting that PBPTET A6 has a catalytic effect on facilitating antibiotic-resistance-associated genome adaptation. Overall, the soil environment contains genes conferring resistance to critically important antibiotics by cryptic mechanisms. Understanding what impact anthropogenic activities might have on the abundance and evolution of these genes should be a priority.
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Affiliation(s)
- Calvin Ho-Fung Lau
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada; Ottawa Laboratory (Carling), Canadian Food Inspection Agency, Ottawa, Ontario, Canada.
| | - Erica N DeJong
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
| | - Forest Dussault
- Ottawa Laboratory (Carling), Canadian Food Inspection Agency, Ottawa, Ontario, Canada
| | - Catherine Carrillo
- Ottawa Laboratory (Carling), Canadian Food Inspection Agency, Ottawa, Ontario, Canada
| | - Peter J Stogios
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada; Center for Structural Genomics of Infectious Diseases
| | - Alexei Savchenko
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, Canada; Center for Structural Genomics of Infectious Diseases; Department of Microbiology, Immunology and Infectious Diseases, University of Calgary, Calgary, Alberta, Canada
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada; Department of Biology, University of Western Ontario, London, Ontario, Canada.
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41
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Abstract
Mandated authorities have developed principles for evaluating the safety of antimicrobial residues in food and have established microbiological acceptable daily intakes (ADIs) and recommended maximum residue limits (MRLs) for antibiotic residues in food products. The evaluation of the ADI is based in relevant scientific information such as MIC data of predominant human intestinal bacteria. However, it does not include data derived from minimal selective concentration (MSC) predictions that estimate the lowest concentration of an antibiotic that will provide resistant bacteria an advantage over susceptible bacteria. Based on these insights, we sought to determine whether human exposure to selected antibiotics through ingestion of foodstuffs could result in colon concentrations exceeding apparent MSCs. Nine antibiotics-tetracycline, oxytetracycline, ciprofloxacin, sarafloxacin, erythromycin, spiramycin, tilmicosin, tylosin, and lincomycin-were selected for analysis. Dietary exposure was estimated either using published measured antibiotic concentrations in foodstuffs or using ADI values or food MRLs and a conservative diet. Using the ADI, the estimated antibiotic residue concentrations in the human colon of all antibiotics assessed may be up to a 1,000-fold greater than the predicted MSCs. When the dietary exposure assessment used MRLs or measured concentration in foodstuffs, the estimated concentrations were considerably lower but still within the MSC range for most of the foodstuffs assessed. These results suggest that the ingestion of antibiotic residues through food consumption may expose intestinal microbiota to antibiotic concentrations exceeding the MSC boundaries, thus favoring the growth of potential resistant bacteria. We suggest that MRL and ADI values be revisited in light of the recognition that antibiotic concentrations significantly below the MIC may select for resistance.
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Affiliation(s)
- Jessica Subirats
- Agriculture and Agri-Food Canada, London Research and Development Centre, 1391 Sandford Street, London, Ontario, Canada N5V 4T3 (ORCID: https://orcid.org/0000-0002-8273-9372 [E.T.]).,Department of Biology, University of Western Ontario, London, Ontario, Canada N6A 5B7
| | - Ashley Domingues
- Agriculture and Agri-Food Canada, London Research and Development Centre, 1391 Sandford Street, London, Ontario, Canada N5V 4T3 (ORCID: https://orcid.org/0000-0002-8273-9372 [E.T.]).,Department of Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada N6A 5B7
| | - Edward Topp
- Agriculture and Agri-Food Canada, London Research and Development Centre, 1391 Sandford Street, London, Ontario, Canada N5V 4T3 (ORCID: https://orcid.org/0000-0002-8273-9372 [E.T.]).,Department of Biology, University of Western Ontario, London, Ontario, Canada N6A 5B7
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42
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Martin-Laurent F, Topp E, Billet L, Batisson I, Malandain C, Besse-Hoggan P, Morin S, Artigas J, Bonnineau C, Kergoat L, Devers-Lamrani M, Pesce S. Environmental risk assessment of antibiotics in agroecosystems: ecotoxicological effects on aquatic microbial communities and dissemination of antimicrobial resistances and antibiotic biodegradation potential along the soil-water continuum. Environ Sci Pollut Res Int 2019; 26:18930-18937. [PMID: 31055743 DOI: 10.1007/s11356-019-05122-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 04/08/2019] [Indexed: 06/09/2023]
Abstract
Antibiotics have a wide application range in human and veterinary medicines. Being designed for pharmacological stability, most antibiotics are recalcitrant to biodegradation after ingestion and can be persistent in the environment. Antibiotic residues have been detected as contaminants in various environmental compartments where they cause human and environmental threats, notably with respect to the potential emergence and proliferation of antibiotic-resistant bacteria. An important component of managing environmental risk caused by antibiotics is to understand exposure of soil and water resources to their residues. One challenge is to gain knowledge on the fate of antibiotics in the ecosystem along the soil-water continuum, and on the collateral impact of antibiotics on environmental microorganisms responsible for crucially important ecosystem functions. In this context, the ANTIBIOTOX project aims at studying the environmental fate and impact of two antibiotics of the sulfonamide class of antibiotics, sulfamethazine (SMZ), and sulfamethoxazole (SMX).
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Affiliation(s)
- Fabrice Martin-Laurent
- AgroSup Dijon, INRA, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, Agroécologie, F-21000, Dijon, France.
| | - Edward Topp
- Agriculture and Agri-Food Canada, University of Western Ontario, London, ON, N5V 4T3, Canada
| | - Loren Billet
- AgroSup Dijon, INRA, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, Agroécologie, F-21000, Dijon, France
| | - Isabelle Batisson
- CNRS, Laboratoire Microorganismes: Génome et Environnement, Université Clermont Auvergne, F-63000, Clermont-Ferrand, France
| | | | - Pascale Besse-Hoggan
- CNRS, Sigma Clermont, Institut de Chimie de Clermont-Ferrand, Université Clermont Auvergne, F-63000, Clermont-Ferrand, France
| | | | - Joan Artigas
- CNRS, Laboratoire Microorganismes: Génome et Environnement, Université Clermont Auvergne, F-63000, Clermont-Ferrand, France
| | | | - Laura Kergoat
- Irstea, UR RiverLy, F-69100, Lyon-Villeurbanne, France
| | - Marion Devers-Lamrani
- AgroSup Dijon, INRA, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, Agroécologie, F-21000, Dijon, France
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43
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Auffret MD, Brassard J, Jones TH, Gagnon N, Gagné MJ, Muehlhauser V, Masse L, Topp E, Talbot G. Impact of seasonal temperature transition, alkalinity and other abiotic factors on the persistence of viruses in swine and dairy manures. Sci Total Environ 2019; 659:640-648. [PMID: 31096393 DOI: 10.1016/j.scitotenv.2018.12.306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 12/20/2018] [Accepted: 12/20/2018] [Indexed: 04/14/2023]
Abstract
Animal manures are a valued source of nutrients for crop production. They frequently do, however, contain zoonotic pathogens including a wide range of viruses. Ideally, manures would be treated prior to land application, reducing the burden of zoonotic viruses, and thus the potential for transmission to adjacent water resources or crops intended for human or animal consumption. In the present study, manure was obtained from four dairy and three swine farms. The manure was incubated anaerobically in the laboratory for 28 weeks at temperatures ranging from 4 to 25 °C, and multiple physical and chemical parameters were monitored. The abundance of various DNA and RNA viruses was measured throughout the incubation by amplifying virus-specific gene targets. A combination of statistical analyses were applied to identify whether the viruses are significantly impacted by temperature transition or affected by other abiotic factors. Temperature had no effect on the persistence of any of the viruses studied. An increase in pH of the manures during the incubation was significantly (P < 0.05) associated with decreased persistence, suggesting that pH manipulation during storage could reduce the abundance of viruses.
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Affiliation(s)
- Marc D Auffret
- Agriculture and Agri-Food Canada, Sherbrooke Research and Development Centre, 2000 College, Sherbrooke, Québec J1M 0C8, Canada.
| | - Julie Brassard
- Agriculture and Agri-Food Canada, Saint-Hyacinthe Research and Development Centre, 3600 Casavant Blvd. West, St-Hyacinthe, Québec J2S 8E3, Canada
| | - Tineke H Jones
- Agriculture and Agri-Food Canada, Lacombe Research and Development Centre, 6000 C & E Trail, Lacombe, Alberta T4L 1W1, Canada
| | - Nathalie Gagnon
- Agriculture and Agri-Food Canada, Sherbrooke Research and Development Centre, 2000 College, Sherbrooke, Québec J1M 0C8, Canada
| | - Marie-Josée Gagné
- Agriculture and Agri-Food Canada, Saint-Hyacinthe Research and Development Centre, 3600 Casavant Blvd. West, St-Hyacinthe, Québec J2S 8E3, Canada
| | - Victoria Muehlhauser
- Agriculture and Agri-Food Canada, Lacombe Research and Development Centre, 6000 C & E Trail, Lacombe, Alberta T4L 1W1, Canada
| | - Lucie Masse
- Agriculture and Agri-Food Canada, Sherbrooke Research and Development Centre, 2000 College, Sherbrooke, Québec J1M 0C8, Canada
| | - Edward Topp
- Agriculture and Agri-Food Canada, London Research and Development Centre, 1391 Sandford Street, London, Ontario N5V 4T3, Canada
| | - Guylaine Talbot
- Agriculture and Agri-Food Canada, Sherbrooke Research and Development Centre, 2000 College, Sherbrooke, Québec J1M 0C8, Canada
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Wilkes G, Sunohara MD, Topp E, Gottschall N, Craiovan E, Frey SK, Lapen DR. Do reductions in agricultural field drainage during the growing season impact bacterial densities and loads in small tile-fed watersheds? Water Res 2019; 151:423-438. [PMID: 30639728 DOI: 10.1016/j.watres.2018.11.074] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 11/20/2018] [Accepted: 11/27/2018] [Indexed: 06/09/2023]
Abstract
Predicting bacterial levels in watersheds in response to agricultural beneficial management practices (BMPs) requires understanding the germane processes at both the watershed and field scale. Controlling subsurface tile drainage (CTD) is a highly effective BMP at reducing nutrient losses from fields, and watersheds when employed en masse, but little work has been conducted on CTD effects on bacterial loads and densities in a watershed context. This study compared fecal indicator bacteria (FIB) [E. coli, Enterococcus, Fecal coliform, Total coliform, Clostridium perfringens] densities and unit area loads (UAL) from a pair of flat tile-drained watersheds (∼250-467 ha catchment areas) during the growing season over a 10-year monitoring period, using a before-after-control-impact (BACI) design (i.e., test CTD watershed vs. reference uncontrolled tile drainage (UCTD) watershed during a pre CTD intervention period and a CTD-intervention period where the test CTD watershed had CTD deployed on over 80% of the fields). With no tile drainage management, upstream tile drainage to ditches comprised ∼90% of total ditch discharge. We also examined FIB loads from a subset of tile drained fields to determine field load contributions to the watershed drainage ditches. Statistical evidence of a CTD effect on FIB UAL in the surface water systems was not strong; however, there was statistical evidence of increased FIB densities [pronounced when E. coli >200 most probable number (MPN) 100 mL-1] in the test CTD watershed during the CTD-intervention period. This was likely a result of reduced dilution/flushing in the test CTD watershed ditch due to CTD significantly decreasing the amount of tile drainage water entering the surface water system. Tile E. coli load contributions to the ditches were low; for example, during the 6-yr CTD-intervention period they amounted to on average only ∼3 and ∼9% of the ditch loads for the test CTD and reference UCTD watersheds, respectively. This suggests in-stream, or off-field FIB reservoirs and bacteria mobilization drivers, dominated ditch E. coli loads in the watersheds during the growing season. Overall, this study suggested that decision making regarding deployment of CTD en masse in tile-fed watersheds should consider drainage practice effects on bacterial densities and loads, as well as CTD's documented capacity to boost crop yields and reduce seasonal nutrient pollution.
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Affiliation(s)
- G Wilkes
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ONT, K1A 0C6, Canada
| | - M D Sunohara
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ONT, K1A 0C6, Canada
| | - E Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ONT, N5V 4T3, Canada
| | - N Gottschall
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ONT, K1A 0C6, Canada
| | - E Craiovan
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ONT, K1A 0C6, Canada
| | - S K Frey
- Aquanty Inc, Waterloo, ONT, N2L 5C6, Canada; Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ONT, K1A 0C6, Canada
| | - D R Lapen
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ONT, K1A 0C6, Canada.
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Saberianfar R, Chin-Fatt A, Scott A, Henry KA, Topp E, Menassa R. Plant-Produced Chimeric V HH-sIgA Against Enterohemorrhagic E. coli Intimin Shows Cross-Serotype Inhibition of Bacterial Adhesion to Epithelial Cells. Front Plant Sci 2019; 10:270. [PMID: 30972081 PMCID: PMC6445026 DOI: 10.3389/fpls.2019.00270] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 02/19/2019] [Indexed: 05/27/2023]
Abstract
Enterohemorrhagic Escherichia coli (EHEC) has consistently been one of the foremost foodborne pathogen threats worldwide based on the past 30 years of surveillance. EHEC primarily colonizes the bovine gastrointestinal (GI) tract from which it can be transmitted to nearby farm environments and remain viable for months. There is an urgent need for effective and easily implemented pre-harvest interventions to curtail EHEC contamination of the food and water supply. In an effort to address this problem, we isolated single-domain antibodies (VHHs) specific for intimin, an EHEC adhesin required for colonization, and designed chimeric VHH fusions with secretory IgA functionality intended for passive immunotherapy at the mucosal GI surface. The antibodies were produced in leaves of Nicotiana benthamiana with production levels ranging between 1 and 3% of total soluble protein. in vivo assembly of all subunits into a hetero-multimeric complex was verified by co-immunoprecipitation. Analysis of multivalent protection across the most prevalent EHEC strains identified one candidate antibody, VHH10-IgA, that binds O145:Hnm, O111:Hnm, O26:H11, and O157:H7. Fluorometric and microscopic analysis also indicated that VHH10-IgA completely neutralizes the capacity of the latter three strains to adhere to epithelial cells in vitro. This study provides proof of concept that a plant-produced chimeric secretory IgA can confer cross-serotype inhibition of bacterial adhesion to epithelial cells.
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Affiliation(s)
- Reza Saberianfar
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, ON, Canada
- Department of Biology, University of Western Ontario, London, ON, Canada
| | - Adam Chin-Fatt
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, ON, Canada
- Department of Biology, University of Western Ontario, London, ON, Canada
| | - Andrew Scott
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, ON, Canada
| | - Kevin A. Henry
- Human Health Therapeutics Research Centre, National Research Council Canada, Ottawa, ON, Canada
| | - Edward Topp
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, ON, Canada
- Department of Biology, University of Western Ontario, London, ON, Canada
| | - Rima Menassa
- Agriculture and Agri-Food Canada, London Research and Development Centre, London, ON, Canada
- Department of Biology, University of Western Ontario, London, ON, Canada
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Topp E, Larsson DGJ, Miller DN, Van den Eede C, Virta MPJ. Antimicrobial resistance and the environment: assessment of advances, gaps and recommendations for agriculture, aquaculture and pharmaceutical manufacturing. FEMS Microbiol Ecol 2019; 94:4772870. [PMID: 29309580 DOI: 10.1093/femsec/fix185] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 12/21/2017] [Indexed: 11/14/2022] Open
Abstract
A roundtable discussion held at the fourth International Symposium on the Environmental Dimension of Antibiotic Resistance (EDAR4) considered key issues concerning the impact on the environment of antibiotic use in agriculture and aquaculture, and emissions from antibiotic manufacturing. The critical control points for reducing emissions of antibiotics from agriculture are antibiotic stewardship and the pre-treatment of manure and sludge to abate antibiotic-resistant bacteria. Antibiotics are sometimes added to fish and shellfish production sites via the feed, representing a direct route of contamination of the aquatic environment. Vaccination reduces the need for antibiotic use in high value (e.g. salmon) production systems. Consumer and regulatory pressure will over time contribute to reducing the emission of very high concentrations of antibiotics from manufacturing. Research priorities include the development of technologies, practices and incentives that will allow effective reduction in antibiotic use, together with evidence-based standards for antibiotic residues in effluents. All relevant stakeholders need to be aware of the threat of antimicrobial resistance and apply best practice in agriculture, aquaculture and pharmaceutical manufacturing in order to mitigate antibiotic resistance development. Research and policy development on antimicrobial resistance mitigation must be cognizant of the varied challenges facing high and low income countries.
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Affiliation(s)
- Edward Topp
- Agriculture and Agri-Food Canada, London, ON, Canada N5V 4T3
| | - D G Joakim Larsson
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy, and Centre for Antibiotic Resistance Research (CARe), University of Gothenburg, SE-413 46, Gothenburg, Sweden
| | | | | | - Marko P J Virta
- University of Helsinki, Department of Microbiology, 00014 Helsinki, Finland
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Murray R, Tien YC, Scott A, Topp E. The impact of municipal sewage sludge stabilization processes on the abundance, field persistence, and transmission of antibiotic resistant bacteria and antibiotic resistance genes to vegetables at harvest. Sci Total Environ 2019; 651:1680-1687. [PMID: 30316087 DOI: 10.1016/j.scitotenv.2018.10.030] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 10/02/2018] [Accepted: 10/02/2018] [Indexed: 06/08/2023]
Abstract
Biosolids were obtained from four Ontario municipalities that vary in how the sewage sludge is treated. These included a Class B biosolids that was anaerobically digested, a Class A biosolids that were heat treated and pelletized (Propell), and two Class A biosolids that were stabilized using either the N-Viro (N-Rich) or Lystek (LysteGro) processes. Viable enteric indicator or pathogenic bacteria in the biosolids were enumerated by plate count, gene targets associated with antibiotic resistance or horizontal gene transfer were detected by PCR, and a subset of these gene targets were quantified by qPCR. Following application at commercial rates to field plots, the persistence of enteric bacteria and gene targets in soil was followed during the growing season. Carrots, radishes and lettuce were sown into the amended and unamended control plots, and the diversity and abundance of gene targets they carried at harvest determined. All three Class A biosolids carried fewer and less abundant antibiotic resistance genes than did the Class B biosolids, in particular the very alkaline N-Viro product (N-Rich). Following application, some gene targets (e.g. int1, sul1, strA/B, aadA) that are typically associated with mobile gene cassettes remained detectable throughout the growing season, whereas others (e.g. ermB, ermF, blaOXA20) that are not associated with cassettes became undetectable within three weeks or less. At harvest a larger number of gene targets were detected on the carrots and radishes than in the lettuce. Overall, land application of Class A biosolids will entrain fewer viable bacteria and genes associated with antibiotic resistance into crop ground than will amendment with Class B biosolids.
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Affiliation(s)
- Roger Murray
- Agriculture and Agri-Food Canada, London, Ontario, Canada
| | | | - Andrew Scott
- Agriculture and Agri-Food Canada, London, Ontario, Canada
| | - Edward Topp
- Agriculture and Agri-Food Canada, London, Ontario, Canada; Department of Biology, University of Western Ontario, London, Ontario, Canada.
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Zambri M, Cloutier M, Adam Z, Lapen DR, Wilkes G, Sunohara M, Topp E, Talbot G, Khan IUH. Novel virulence, antibiotic resistance and toxin gene-specific PCR-based assays for rapid pathogenicity assessment of Arcobacter faecis and Arcobacter lanthieri. BMC Microbiol 2019; 19:11. [PMID: 30634926 PMCID: PMC6330389 DOI: 10.1186/s12866-018-1357-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 11/28/2018] [Indexed: 11/30/2022] Open
Abstract
Background Arcobacter faecis and A. lanthieri are two newly classified species of genus Arcobacter. The prevalence and distribution of virulence, antibiotic resistance and toxin (VAT) genes in these species are required to assess their potential pathogenic health impacts to humans and animals. This study (i) developed species- and gene-specific primer pairs for the detection of six virulence, two antibiotic resistance, and three toxin genes in two target species; (ii) optimized eight single-tube multiplex and three monoplex PCR protocols using the newly developed species- and gene-specific primers; and (iii) conducted specificity and sensitivity evaluations as well as validation of eleven mono- and multiplex PCR assays by testing A. faecis (n= 29) and A. lanthieri (n= 10) strains isolated from various fecal and agricultural water sources to determine the prevalence and distribution of VAT genes and assess the degree of pathogenicity within the two species. Results Detection of all ten and eleven target VAT genes, and expression of cytolethal distending toxin (cdtA, cdtB and cdtC) genes in A. faecis and A. lanthieri reference strains with high frequency in field isolates suggest that they are potentially pathogenic strains. These findings indicate that these two species can pose a health risk to humans and animals. Conclusions The study results show that the developed mono- and multiplex PCR (mPCR) assays are simple, rapid, reliable and sensitive for the simultaneous assessment of the potential pathogenicity and antibiotic resistance profiling of tet(O) and tet(W) genes in these two newly discovered species. Also, these assays can be useful in diagnostic and analytical laboratories to determine the pathotypes and assessment of the virulence and toxin factors associated to human and animal infections. Electronic supplementary material The online version of this article (10.1186/s12866-018-1357-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Matthew Zambri
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada.,Department of Biology, McMaster University, Hamilton, Ontario, L8S 4L8, Canada
| | - Michel Cloutier
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
| | - Zaky Adam
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada.,School of Information Technology and Engineering, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - David R Lapen
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
| | - Graham Wilkes
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
| | - Mark Sunohara
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada
| | - Edward Topp
- London Research and Development Centre (LRDC), Agriculture and Agri-Food Canada, London, Ontario, N5V 4T3, Canada
| | - Guylaine Talbot
- Sherbrooke Research and Development Centre (SRDC), Agriculture and Agri-Food Canada, Sherbrooke, Quebec, J1M 0C8, Canada
| | - Izhar U H Khan
- Ottawa Research and Development Centre (ORDC), Agriculture and Agri-Food Canada, 960 Carling Ave., Ottawa, Ontario, K1A 0C6, Canada.
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Rehman MA, Yin X, Zaheer R, Goji N, Amoako KK, McAllister T, Pritchard J, Topp E, Diarra MS. Genotypes and Phenotypes of Enterococci Isolated From Broiler Chickens. Front Sustain Food Syst 2018. [DOI: 10.3389/fsufs.2018.00083] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
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50
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Chen W, Wilkes G, Khan IUH, Pintar KDM, Thomas JL, Lévesque CA, Chapados JT, Topp E, Lapen DR. Aquatic Bacterial Communities Associated With Land Use and Environmental Factors in Agricultural Landscapes Using a Metabarcoding Approach. Front Microbiol 2018; 9:2301. [PMID: 30425684 PMCID: PMC6218688 DOI: 10.3389/fmicb.2018.02301] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 09/10/2018] [Indexed: 12/30/2022] Open
Abstract
This study applied a 16S rRNA gene metabarcoding approach to characterize bacterial community compositional and functional attributes for surface water samples collected within, primarily, agriculturally dominated watersheds in Ontario and Québec, Canada. Compositional heterogeneity was best explained by stream order, season, and watercourse discharge. Generally, community diversity was higher at agriculturally dominated lower order streams, compared to larger stream order systems such as small to large rivers. However, during times of lower relative water flow and cumulative 2-day rainfall, modestly higher relative diversity was found in the larger watercourses. Bacterial community assemblages were more sensitive to environmental/land use changes in the smaller watercourses, relative to small-to-large river systems, where the proximity of the sampled water column to bacteria reservoirs in the sediments and adjacent terrestrial environment was greater. Stream discharge was the environmental variable most significantly correlated (all positive) with bacterial functional groups, such as C/N cycling and plant pathogens. Comparison of the community structural similarity via network analyses helped to discriminate sources of bacteria in freshwater derived from, for example, wastewater treatment plant effluent and intensity and type of agricultural land uses (e.g., intensive swine production vs. dairy dominated cash/livestock cropping systems). When using metabarcoding approaches, bacterial community composition and coexisting pattern rather than individual taxonomic lineages, were better indicators of environmental/land use conditions (e.g., upstream land use) and bacterial sources in watershed settings. Overall, monitoring changes and differences in aquatic microbial communities at regional and local watershed scales has promise for enhancing environmental footprinting and for better understanding nutrient cycling and ecological function of aquatic systems impacted by a multitude of stressors and land uses.
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Affiliation(s)
- Wen Chen
- Ottawa Research and Development Center, Science and Technology Branch, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Graham Wilkes
- Ottawa Research and Development Center, Science and Technology Branch, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Izhar U H Khan
- Ottawa Research and Development Center, Science and Technology Branch, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | | | - Janis L Thomas
- Ontario Ministry of the Environment and Climate Change, Environmental Monitoring and Reporting Branch, Toronto, ON, Canada
| | - C André Lévesque
- Ottawa Research and Development Center, Science and Technology Branch, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Julie T Chapados
- Ottawa Research and Development Center, Science and Technology Branch, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Edward Topp
- London Research and Development Centre, Science and Technology Branch, Agriculture and Agri-Food Canada, London, ON, Canada
| | - David R Lapen
- Ottawa Research and Development Center, Science and Technology Branch, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
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