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Eliette AS, Elodie B, Arnaud M, Tiffany R, Aymé S, Pascal P. Idiosyncratic invasion trajectories of human bacterial pathogens facing temperature disturbances in soil microbial communities. Sci Rep 2024; 14:12375. [PMID: 38811807 DOI: 10.1038/s41598-024-63284-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 05/27/2024] [Indexed: 05/31/2024] Open
Abstract
Current knowledge about effects of disturbance on the fate of invaders in complex microbial ecosystems is still in its infancy. In order to investigate this issue, we compared the fate of Klebsiella pneumoniae (Kp) and Listeria monocytogenes (Lm) in soil microcosms. We then used environmental disturbances (freeze-thaw or heat cycles) to compare the fate of both invaders and manipulate soil microbial diversity. Population dynamics of the two pathogens was assessed over 50 days of invasion while microbial diversity was measured at times 0, 20 and 40 days. The outcome of invasion was strain-dependent and the response of the two invaders to disturbance differed. Resistance to Kp invasion was higher under the conditions where resident microbial diversity was the highest while a significant drop of diversity was linked to a higher persistence. In contrast, Lm faced stronger resistance to invasion in heat-treated microcosms where diversity was the lowest. Our results show that diversity is not a universal proxy of resistance to microbial invasion, indicating the need to properly assess other intrinsic properties of the invader, such as its metabolic repertoire, or the array of interactions between the invader and resident communities.
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Affiliation(s)
- Ascensio-Schultz Eliette
- Université de Bourgogne, University Bourgogne Franche-Comté, INRAE, Institut Agro, Agroécologie, 21000, Dijon, France
| | - Barbier Elodie
- Université de Bourgogne, University Bourgogne Franche-Comté, INRAE, Institut Agro, Agroécologie, 21000, Dijon, France
| | - Mounier Arnaud
- Université de Bourgogne, University Bourgogne Franche-Comté, INRAE, Institut Agro, Agroécologie, 21000, Dijon, France
| | - Raynaud Tiffany
- Université de Bourgogne, University Bourgogne Franche-Comté, INRAE, Institut Agro, Agroécologie, 21000, Dijon, France
| | - Spor Aymé
- Université de Bourgogne, University Bourgogne Franche-Comté, INRAE, Institut Agro, Agroécologie, 21000, Dijon, France
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Zhang N, Liang C, Kan P, Yangyao J, Lu D, Yao Z, Gan H, Zhu DZ. Indigenous microbial community governs the survival of Escherichia coli O157:H7 in constructed wetlands. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 334:117524. [PMID: 36801692 DOI: 10.1016/j.jenvman.2023.117524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 02/09/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
The survival pattern of Escherichia coli O157:H7 (E. coli O157:H7) and its regulatory factors in natural environments have been widely studied. However, there is little information about the survival of E. coli O157:H7 in artificial environments, especially in wastewater treatment facilities. In this study, a contamination experiment was performed to explore the survival pattern of E. coli O157:H7 and its central control factors in two constructed wetlands (CWs) under different hydraulic loading rates (HLRs). The results showed that the survival time of E. coli O157:H7 was longer in the CW under the higher HLR. Substrate ammonium nitrogen and available phosphorus were the main factors that influenced the survival of E. coli O157:H7 in CWs. Despite the minimal effect of microbial α-diversity, some keystone taxa, such as Aeromonas, Selenomonas, and Paramecium, governed the survival of E. coli O157:H7. In addition, the prokaryotic community had a more significant impact on the survival of E. coli O157:H7 than the eukaryotic community. The biotic properties had a more substantial direct power on the survival of E. coli O157:H7 than the abiotic factors in CWs. Collectively, this study comprehensively disclosed the survival pattern of E. coli O157:H7 in CWs, which is an essential addition to the environmental behavior of E. coli O157:H7, providing a theoretical basis for the prevention and control of biological contamination in wastewater treatment processes.
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Affiliation(s)
- Nan Zhang
- School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo 315211, China; Institute of Ocean Engineering, Ningbo University, Ningbo 315211, China
| | - Chunling Liang
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Peiying Kan
- School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo 315211, China
| | - Jiannan Yangyao
- School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Dingnan Lu
- School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo 315211, China; Institute of Ocean Engineering, Ningbo University, Ningbo 315211, China
| | - Zhiyuan Yao
- School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo 315211, China; Institute of Ocean Engineering, Ningbo University, Ningbo 315211, China.
| | - Huihui Gan
- School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo 315211, China; Institute of Ocean Engineering, Ningbo University, Ningbo 315211, China
| | - David Z Zhu
- School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo 315211, China; Institute of Ocean Engineering, Ningbo University, Ningbo 315211, China
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Zhao X, Sun Y, Ma Y, Xu Y, Guan H, Wang D. Research advances on the contamination of vegetables by Enterohemorrhagic Escherichia coli: pathways, processes and interaction. Crit Rev Food Sci Nutr 2022; 64:4833-4847. [PMID: 36377729 DOI: 10.1080/10408398.2022.2146045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Enterohemorrhagic Escherichia coli is considered one of the primary bacterial pathogens that cause foodborne diseases because it can survive in meat, vegetables and so on. Understanding of the effect of vegetable characteristics on the adhesion and proliferation process of EHEC is necessary to develop control measures. In this review, the amount and methods of adhesion, the internalization pathway and proliferation process of EHEC have been described during the vegetable contamination. Types, cultivars, tissue characteristics, leaf age, and damage degree can affect EHEC adhesion on vegetables. EHEC cells contaminate the root surface of vegetables through soil and further internalize. It can also contaminate the stem scar tissue of vegetables by rain or irrigation water and internalize the vertical axis, as well as the stomata, necrotic lesions and damaged tissues of vegetable leaves. After EHEC adhered to the vegetables, they may further proliferate and form biofilms. Leaf and fruit tissues were more sensitive to biofilm formation, and shedding rate of biofilms on epidermis tissue was faster. Insights into the mechanisms of vegetable contamination by EHEC, including the role of exopolysaccharides and proteins responsible for movement, adhesion and oxidative stress response could reveal the molecular mechanism by which EHEC contaminates vegetables.
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Affiliation(s)
- Xiaoyan Zhao
- Institute of Agri-food Processing and Nutrition, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Fruits and Vegetables Preservation and Processing, Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Yeting Sun
- Institute of Agri-food Processing and Nutrition, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Fruits and Vegetables Preservation and Processing, Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Yue Ma
- Institute of Agri-food Processing and Nutrition, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Fruits and Vegetables Preservation and Processing, Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Yujia Xu
- Institute of Agri-food Processing and Nutrition, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Fruits and Vegetables Preservation and Processing, Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Hongyang Guan
- Institute of Agri-food Processing and Nutrition, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Fruits and Vegetables Preservation and Processing, Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Dan Wang
- Institute of Agri-food Processing and Nutrition, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Fruits and Vegetables Preservation and Processing, Key Laboratory of Vegetable Postharvest Processing, Ministry of Agriculture and Rural Affairs, Beijing, China
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Piveteau P, Druilhe C, Aissani L. What on earth? The impact of digestates and composts from farm effluent management on fluxes of foodborne pathogens in agricultural lands. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 840:156693. [PMID: 35700775 DOI: 10.1016/j.scitotenv.2022.156693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 06/10/2022] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
The recycling of biomass is the cornerstone of sustainable development in the bioeconomy. In this context, digestates and composts from processed agricultural residues and biomasses are returned to the soil. Whether or not the presence of pathogenic microorganisms in these processed biomasses is a threat to the sustainability of the current on-farm practices is still the subject of debate. In this review, we describe the microbial pathogens that may be present in digestates and composts. We then provide an overview of the current European regulation designed to mitigate health hazards linked to the use of organic fertilisers and soil improvers produced from farm biomasses and residues. Finally, we discuss the many factors that underlie the fate of microbial pathogens in the field. We argue that incorporating land characteristics in the management of safety issues connected with the spreading of organic fertilisers and soil improvers can improve the sustainability of biomass recycling.
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Effect of Bacillus subtilis fortified inoculation on the microbial communities in different niches of Daqu. J Biosci Bioeng 2022; 134:407-415. [PMID: 36100517 DOI: 10.1016/j.jbiosc.2022.07.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 07/25/2022] [Accepted: 07/29/2022] [Indexed: 11/23/2022]
Abstract
Daqu is the fermentation starter of Baijiu, which is one of the six most renowned distilled spirits. Studies have found that Bacillus is one of the dominant microbial genera in Daqu, and Bacillus subtilis is known to produce amylase, an important enzyme that influences the quality of Daqu. This study aims to explore the influence of B. subtilis inoculation on the microbial community structure in different niches of Daqu. We studied the microbial community structure of the natural inoculated Daqu (i.e., control Daqu) and the fortified Daqu (i.e., B. subtilis-inoculated Daqu) by amplicon sequencing. Our results showed that compared with the control Daqu rind microbial community, the relative abundance of Bacillus, Aspergillus, Thermomyces, and Rasamsonia in the fortified Daqu rind microbial community increased, and the relative abundance of Weissella, Lactobacillus, Leuconostoc, and Pichia decreased. Compared with the control Daqu core microbial community, the relative abundance of Bacillus in the fortified Daqu core microbial community also increased, but the relative abundance of Pseudomonas and Paecilomyces decreased. The effect of B. subtilis inoculation on the rind microbial community of Daqu was more significant. In addition, the bacterial community of Daqu was more susceptible to the effect of the B. subtilis inoculation than was the fungal community of Daqu. The correlation between the bacterial community of Daqu and the fungal community of Daqu increased significantly after the B. subtilis inoculation. These results provide an important theoretical basis for the production of fortified Daqu.
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Semanti P, Robin RS, Purvaja R, Ramesh R. Fatty acid signatures of sediment microbial community in the chronically polluted mangrove ecosystem. MARINE POLLUTION BULLETIN 2021; 172:112885. [PMID: 34461371 DOI: 10.1016/j.marpolbul.2021.112885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 08/14/2021] [Accepted: 08/17/2021] [Indexed: 06/13/2023]
Abstract
Phospholipid fatty acid (PLFA) analysis was used to examine variation in the distribution of microbial communities in heavily polluted mangrove sediments of Thane creek, west coast of India. A total of 40 individual PLFAs representing 11 functional groups were identified in the sediment and were mainly dominated by saturated fatty acids (anaerobic prokaryotes) >50%. Significant dominance of PUFA, 16:3 ω6c (34.2%) indicators of micro-eukaryotes, in subsurface depth (p < 0.05) suggests input from the remnants of marine microalgae. Declined mean relative abundance of fungi (<6%) and actinomycetes (<1%) were detected in the sediment indicating their sensitivity to anthropic stressors. Homogenous profile of microbial diversity indicating active bioturbation. Cumulative metabolic stress evident from SAT/MUFA (>1), B/F (>1) and G+/G- (<1) ratio and prolonged hypoxia to be prevalent in the creek during the study. In conclusion, PLFA signatures can thus be used as potential biomarkers of environmental monitoring and proxy for interpreting ecosystem health.
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Affiliation(s)
- P Semanti
- National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Chennai 600 025, India
| | - R S Robin
- National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Chennai 600 025, India
| | - R Purvaja
- National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Chennai 600 025, India
| | - R Ramesh
- National Centre for Sustainable Coastal Management, Ministry of Environment, Forest and Climate Change, Chennai 600 025, India.
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Liu J, Liu M, Ye P, He C, Liu Y, Zhang S, Huang J, Zhou J, Zhou R, Cai L. Characterisation of the metabolite profile and microbial community of repeated batch and coculture-fermented greengage wine. Process Biochem 2021. [DOI: 10.1016/j.procbio.2021.06.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Zhang N, Liang C, Liu X, Yao Z, Zhu DZ, Du S, Zhang H. Divergent Temporal Response of Abundant and Rare Bacterial Communities to Transient Escherichia coli O157:H7 Invasion. Front Microbiol 2021; 12:665380. [PMID: 34163444 PMCID: PMC8215281 DOI: 10.3389/fmicb.2021.665380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/22/2021] [Indexed: 11/24/2022] Open
Abstract
The release of Escherichia coli (E. coli) O157:H7 has been widely found in various environments, but little is known about the probable influence of the transient E. coli O157:H7 invasion on the native microbial community. Here, we investigated the temporal response of two bacterial biospheres (abundant and rare) of two marsh sediments against E. coli O157:H7 during a 60-day incubation. The diversity of both biospheres showed no evident response to O157:H7 invasion. Temporal factor exhibited greater effects on bacterial variation than O157:H7 invasion. We found that O157:H7 invasion led to an increase in the niche breadth of the bacterial community while decreasing the efficiency of bacterial interaction of the abundant taxa. Moreover, the rare biosphere exhibited enhanced stability against O157:H7 invasion compared with the abundant biosphere, acting as the backbone in resisting external disturbance. Furthermore, each subcommunity assembly showed different randomness levels. The stochastic events were relatively more important in constraining the abundant taxa assembly after invasion. Collectively, E. coli O157:H7 exhibited diverse tangible impact on both biospheres, which unearthed differential responses of abundant and rare biosphere against transient microbial invasion.
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Affiliation(s)
- Nan Zhang
- School of Civil and Environmental Engineering, Ningbo University, Ningbo, China.,Institute of Ocean Engineering, Ningbo University, Ningbo, China
| | - Chunling Liang
- School of Civil and Environmental Engineering, Ningbo University, Ningbo, China
| | - Xiangjun Liu
- School of Civil and Environmental Engineering, Ningbo University, Ningbo, China
| | - Zhiyuan Yao
- School of Civil and Environmental Engineering, Ningbo University, Ningbo, China.,Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou, China
| | - David Z Zhu
- School of Civil and Environmental Engineering, Ningbo University, Ningbo, China.,Institute of Ocean Engineering, Ningbo University, Ningbo, China
| | - Shicong Du
- School of Marine Sciences, Ningbo University, Ningbo, China
| | - Huajun Zhang
- School of Marine Sciences, Ningbo University, Ningbo, China
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Gu L, Wu JY, Hua ZL. Benthic prokaryotic microbial community assembly and biogeochemical potentials in E. coli - Stressed aquatic ecosystems during plant decomposition. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 275:116643. [PMID: 33581629 DOI: 10.1016/j.envpol.2021.116643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 01/26/2021] [Accepted: 01/31/2021] [Indexed: 06/12/2023]
Abstract
Benthic microbes play a crucial role in maintaining the biogeochemical balance of aquatic ecosystems especially the material cycling during plant decomposition. However, those systems in agricultural area are always threatened by agricultural run-off containing a mass of typical pathogenic invader- Escherichia coli. It is therefore vital to clarify the turnover, assembly, and geochemical functions of the E. coli invaded benthic prokaryotic microbial community during plant decomposition. During the decaying process, the key filtering factors of benthic community assembly were NH4+-N (P < 0.001), NO2--N (P < 0.01), and Organic-N (P < 0.05). The E. coli colonized significantly in sediments (P < 0.001) and drove the turnover of the bacterial community (P = 0.001), which enhanced archaeal dominance in the benthic microbial network. E. coli also triggered niche structural variations. The biomass (%) of benthic nutrient cycling genera including Dechloromonas, Pseudomonas, Bacteroides, Candidatus_Methanofastidiosum, and Desulfomicrobium (P < 0.05) was altered by E. coli stress. The structural equation model illustrated that E. coli critically affected the benthic microbial geochemical functions in multiple pathways (P < 0.05). Our results provide new insights into benthic prokaryotic microbial community assembly and nutrient cycling and management under pollution stress.
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Affiliation(s)
- Li Gu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China; Yangtze Institute for Conservation and Development, Hohai University, Jiangsu, 210098, China.
| | - Jian-Yi Wu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China; Yangtze Institute for Conservation and Development, Hohai University, Jiangsu, 210098, China.
| | - Zu-Lin Hua
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China; Yangtze Institute for Conservation and Development, Hohai University, Jiangsu, 210098, China.
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Han Z, Ma J, Yang CH, Ibekwe AM. Soil salinity, pH, and indigenous bacterial community interactively influence the survival of E. coli O157:H7 revealed by multivariate statistics. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:5575-5586. [PMID: 32974826 DOI: 10.1007/s11356-020-10942-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 09/20/2020] [Indexed: 06/11/2023]
Abstract
Complexities of biotic-abiotic interactions in soils result in the lack of integrated understanding of environmental variables that restrict the survival of shiga toxin-producing E. coli O157:H7. Herein, we reanalyzed previously published data and highlighted the influence of soil abiotic factors on E. coli O157:H7 survivability and elucidated how these factors took effect indirectly through affecting indigenous bacterial community. Interaction network analysis indicated salinity and pH decreased the relative abundances of some bacterial taxa (e.g., Acidobacteria_Gp4, Acidobacteria_Gp6, and Deltaproteobacteria) which were positively correlated with the survival of E. coli O157:H7 in soils, and vice versa (e.g., Gammaproteobacteria and Flavobacteria) (P < 0.05). An array of multivariate statistical approaches including partial Mantel test, variation partition analysis (VPA), and structural equation model (SEM) further confirmed that biotic and abiotic factors interactively shaped the survival profile of E. coli O157:H7. This study revealed that some bacterial taxa were correlated with survival of E. coli O157:H7 directly, and salinity and pH could affect E. coli O157:H7 survival through changing these bacterial taxa. These findings suggest that salinity in soil might benefit the control of fecal pathogenic E. coli invasion, while soil acidification caused by anthropogenic influences could potentially increase the persistence of E. coli O157:H7 in agro-ecosystem.
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Affiliation(s)
- Ziming Han
- Key Laboratory of Ground Water Resource and Environment, Ministry of Education, Jilin University, Changchun, 130021, China
- Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, 130021, China
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Jincai Ma
- Key Laboratory of Ground Water Resource and Environment, Ministry of Education, Jilin University, Changchun, 130021, China.
- Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, 130021, China.
- College of New Energy and Environment, Jilin University, Changchun, 130021, China.
| | - Ching-Hong Yang
- Department of Biological Sciences, University of Wisconsin, Milwaukee, WI, USA
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Getaneh DK, Hordofa LO, Ayana DA, Tessema TS, Regassa LD. Prevalence of Escherichia coli O157:H7 and associated factors in under-five children in Eastern Ethiopia. PLoS One 2021; 16:e0246024. [PMID: 33508023 PMCID: PMC7842931 DOI: 10.1371/journal.pone.0246024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 01/12/2021] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Escherichia coli O157:H7 (E. coli O157:H7) is one of the most potent zoonotic pathogens that causes mild diarrhea and leads to hemolytic uremic syndrome or death. This study was aimed to assess the prevalence and determinants of E. coli O157:H7 related to diarrhea among under-five children with acute diarrhea. METHODS A cross-sectional study design was carried out in 2018 on 378 under-five-year children recruited randomly from hospitals in Eastern Ethiopia. Stool specimens were collected and processed using enrichment, differential and selective medium. Among isolates, E. coli O157:H7 was confirmed using latex test (Oxoid, Basingstoke, Hants, England). Factors associated with E. coli O157:H7 infection were identified using binary and multivariable logistic regression. Associations were reported by odds ratio with 95% confidence interval. RESULTS The prevalence of E. coli O157:H7 related diarrhea was 15.3% (95%CI: 11.8-19.5). The E. coli O157:H7 infection was positively associated with rural residence (AOR;3.75, 95%CI:1.26-11.20), consumption of undercooked meat (AOR;3.95, 95%CI: 1.23-12.67), raw vegetables and/or fruit juice (AOR;3.37, 95%CI:1.32-8.62), presence of bloody diarrhea (AOR;4.42, 95% CI:1.78-10.94), number of under-five children in a household (AOR;7.16, 95%CI: 2.90-17.70), presence of person with diarrhea in a household (AOR;4.22, 95% CI: 1.84-12.69), owning domestic animal (AOR;3.87, 95% CI: 1.48-10.12) and uneducated mother (AOR;3.14, 95%CI: 1.05-9.42). CONCLUSION The Prevalence of E. coli O157:H7 related diarrhea among under-five children is relatively high in Eastern Ethiopia. The E. coli infection was associated with sanitation and hygiene in a household. Thus, education focused on food cooking and handling, child care, and household sanitation associated with animal manure in rural resident children are helpful in.
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Wu JY, Gu L, Hua ZL, Li XQ, Lu Y, Chu KJ. Effects of Escherichia coli pollution on decomposition of aquatic plants: Variation due to microbial community composition and the release and cycling of nutrients. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123252. [PMID: 32634663 DOI: 10.1016/j.jhazmat.2020.123252] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 06/16/2020] [Accepted: 06/17/2020] [Indexed: 06/11/2023]
Abstract
Determination of the effects of Escherichia coli (E. coli) pollution on agricultural pond ecosystems with vegetation at different life stages is essential for the protection of ecological functions. However, no comprehensive study has yet shown the responses of epiphytic microbial communities to E. coli invasion during plant decay. Thus, this study was conducted to clarify variation in the decay of the following aquatic plants-Myriophyllum aquaticum, Nymphaea tetragona and Phragmites australis after E. coli pollution. Exogenous E. coli especially shifted the epiphytic microbial composition and distribution of P. australis. Stronger effects of E. coli on the archaeal community (edges/nodes = 0.818 < 1, modularity = 0.654; lower clustered structure, 0.389) were found than on the bacterial community (edges/nodes = 1.538 > 1, modularity = 1.291 > 0.654; higher clustered, 0.593). During plant decomposition, E. coli weakened methanogenesis by regulating the network of core genera Methanobacterium and Methanospirillum (spearman, P < 0.05), stimulated the accumulation of organic matters in water (P < 0.05). Similarly, nitrification and denitrification increased and decreased through network regulation in relative biomass of genera Devosia and Desulfovibrio (P < 0.05), respectively. The results provided theoretical supports for eutrophication management in pond ecosystems threatened by E. coli pollution.
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Affiliation(s)
- Jian-Yi Wu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China; National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Hohai University, Nanjing 210098, China
| | - Li Gu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China; National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Hohai University, Nanjing 210098, China.
| | - Zu-Lin Hua
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Xiao-Qing Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Ying Lu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Ke-Jian Chu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
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Xing J, Jia X, Wang H, Ma B, Falcão Salles J, Xu J. The legacy of bacterial invasions on soil native communities. Environ Microbiol 2020; 23:669-681. [PMID: 32419297 DOI: 10.1111/1462-2920.15086] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/03/2020] [Accepted: 05/12/2020] [Indexed: 01/09/2023]
Abstract
Soil microbial communities are often not resistant to the impact caused by microbial invasions, both in terms of structure and functionality, but it remains unclear whether these changes persist over time. Here, we used three strains of Escherichia coli O157:H7 (E. coli O157:H7), a species used for modelling bacterial invasions, to evaluate the resilience of the bacterial communities from four Chinese soils to invasion. The impact of E. coli O157:H7 strains on soil native communities was tracked for 120 days by analysing bacterial community composition as well as their metabolic potential. We showed that soil native communities were not resistant to invasion, as demonstrated by a decline in bacterial diversity and shifts in bacterial composition in all treatments. The resilience of native bacterial communities (diversity and composition) was inversely correlated with invader's persistence in soils (R2 = 0.487, p < 0.001). Microbial invasions also impacted the functionality of the soil communities (niche breadth and community niche), the degree of resilience being dependent on soil or native community diversity. Collectively, our results indicate that bacteria invasions can potentially leave a footprint in the structure and functionality of soil communities, indicating the need of assessing the legacy of introducing exotic species in soil environments.
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Affiliation(s)
- Jiajia Xing
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.,Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China
| | - Xiu Jia
- Department of Microbial Ecology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, 9747 AG, The Netherlands
| | - Haizhen Wang
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.,Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China
| | - Bin Ma
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.,Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China
| | - Joana Falcão Salles
- Department of Microbial Ecology, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, 9747 AG, The Netherlands
| | - Jianming Xu
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.,Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China
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14
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Xing J, Sun S, Wang H, Brookes PC, Xu J. Response of soil native microbial community to Eschericia coli O157:H7 invasion. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 261:114225. [PMID: 32220754 DOI: 10.1016/j.envpol.2020.114225] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 01/31/2020] [Accepted: 02/16/2020] [Indexed: 06/10/2023]
Abstract
The presence of Eschericia coli O157:H7 in the natural environment is a serious threat to human health. The native microbial community in soil plays an important role in resisting E. coli O157:H7 invasion. This study examined the responses of soil microbial community to E. coli O157:H7 invasion during a 32-day incubation. The E. coli O157:H7 persisted longer in γ-irradiated soil than non-irradiated soil while glucose addition decreased its persistence in the irradiated soil which was associated with an increasing recovery of the native community. The invasion of E. coli O157:H7 increased soil organic carbon mineralization, an indicator of microbial activity, in both non-irradiated and irradiated soils, while glucose addition significantly promoted the carbon mineralization process. The 16S rRNA sequencing data showed the gradual recovery of the native bacterial population including specific taxa such as proteobacteria and actinobacteria following irradiation. It is concluded that soil microbial function and structure can affect persistence of E. coli O157:H7 and that lower biodiversity of the native community favors its persistence.
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Affiliation(s)
- Jiajia Xing
- Institute of Soil and Water Resources and Environmental Science, College of Environment and Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Substrates and Environment, Zhejiang University, Hangzhou, 310058, China
| | - Shanshan Sun
- Institute of Soil and Water Resources and Environmental Science, College of Environment and Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Substrates and Environment, Zhejiang University, Hangzhou, 310058, China
| | - Haizhen Wang
- Institute of Soil and Water Resources and Environmental Science, College of Environment and Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Substrates and Environment, Zhejiang University, Hangzhou, 310058, China
| | - Philip C Brookes
- Institute of Soil and Water Resources and Environmental Science, College of Environment and Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Substrates and Environment, Zhejiang University, Hangzhou, 310058, China
| | - Jianming Xu
- Institute of Soil and Water Resources and Environmental Science, College of Environment and Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Substrates and Environment, Zhejiang University, Hangzhou, 310058, China.
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15
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Spor A, Camargo ARO, Bru D, Gaba S, Garmyn D, Gal L, Piveteau P. Habitat Disturbances Modulate the Barrier Effect of Resident Soil Microbiota on Listeria monocytogenes Invasion Success. Front Microbiol 2020; 11:927. [PMID: 32547502 PMCID: PMC7270165 DOI: 10.3389/fmicb.2020.00927] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 04/20/2020] [Indexed: 11/13/2022] Open
Abstract
Microbial communities are continuously exposed to the arrival of alien species. In complex environments such as soil, the success of invasion depends on the characteristics of the habitat, especially the diversity and structure of the residing bacterial communities. While most data available on microbial invasion relies on experiments run under constant conditions, the fate of invading species when the habitat faces disturbances has not yet been addressed. Here, we designed experiments to assess the consequences of habitat disturbance on the success of ongoing microbial invasion. We investigated (i) if disturbance-induced alterations in resident microbial communities could mitigate or facilitate invasion of Listeria monocytogenes, (ii) if disturbance itself could either improve or reduce the invader's fitness and (iii) if the invading species alters the structure of indigenous microbial communities. Our data show that environmental disturbances affect invasion patterns of L. monocytogenes in soils. Intriguingly, successful invasion was recorded in a regimen of disturbances that triggered small changes in microbial community structure while maintaining high bacterial diversity. On the opposite, dramatic decline of the invader was recorded when disturbance resulted in emergence of specific communities albeit concomitant with a diversity loss. This suggests that community composition is more important than its diversity when it comes to prevent the establishment of an invading species. Finally, shifts in bacterial communities during the disturbance event were strengthened by the presence of the invader indicating a major impact of invasion on microbial diversity when the habitat faces disturbance.
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Affiliation(s)
- Aymé Spor
- Agroécologie, AgroSup Dijon, INRAE, Université de Bourgogne, Université de Bourgogne Franche-Comté, Dijon, France
| | - Angela Rocio Ortiz Camargo
- Agroécologie, AgroSup Dijon, INRAE, Université de Bourgogne, Université de Bourgogne Franche-Comté, Dijon, France
| | - David Bru
- Agroécologie, AgroSup Dijon, INRAE, Université de Bourgogne, Université de Bourgogne Franche-Comté, Dijon, France
| | - Sabrina Gaba
- USC 1339, Centre d'Études Biologiques de Chizé, INRAE, Villiers-en-Bois, France.,CNRS, UMR 7372 Centre d'Études Biologiques de Chizé, Université de La Rochelle, La Rochelle, France
| | - Dominique Garmyn
- Agroécologie, AgroSup Dijon, INRAE, Université de Bourgogne, Université de Bourgogne Franche-Comté, Dijon, France
| | - Laurent Gal
- Agroécologie, AgroSup Dijon, INRAE, Université de Bourgogne, Université de Bourgogne Franche-Comté, Dijon, France
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16
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Huang G, Liao J, Han Z, Li J, Zhu L, Lyu G, Lu L, Xie Y, Ma J. Interaction between Fungal Communities, Soil Properties, and the Survival of Invading E. coli O157:H7 in Soils. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17103516. [PMID: 32443436 PMCID: PMC7277763 DOI: 10.3390/ijerph17103516] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 05/14/2020] [Accepted: 05/15/2020] [Indexed: 11/16/2022]
Abstract
Pathogens that invade into the soil cancontaminate food and water, andinfect animals and human beings. It is well documented that individual bacterial phyla are well correlated with the survival of E. coliO157 (EcO157), while the interaction betweenthe fungal communities and EcO157 survival remains largely unknown. In this study, soil samples from Tongliao, Siping, and Yanji in northeast China were collected and characterized. Total DNA was extracted for fungal and bacterial community characterization. EcO157 cells were spiked into the soils, and their survival behavior was investigated. Results showed that both fungal and bacterial communities were significantly correlated (p < 0.01) with the survival of EcO157 in soils, and the relative abundances of fungal groups (Dothideomycetes and Sordariomycetes) and some bacterial phyla (Acidobacteria, Firmicutes, gamma- and delta-Proteobacteria)weresignificantly correlated with ttds (p < 0.01). Soil pH, EC (electric conductance) salinity, and water-soluble nitrate nitrogen were significantly correlated with survival time (time to reach the detection limit, ttd) (p < 0.05). The structural equation model indicated that fungal communities could directly influence ttds, and soil properties could indirectly influence the ttds through fungal communities. The first log reduction time (δ) was mainly correlated with soil properties, while the shape parameter (p) was largely correlated with fungal communities. Our data indicated that both fungal and bacterial communities were closely correlated (p < 0.05)with the survival of EcO157 in soils, and different fungal and bacterial groups might play different roles. Fungal communities and bacterial communities explained 5.87% and 17.32% of the overall variation of survival parameters, respectively. Soil properties explained about one-third of the overall variation of survival parameters. These findings expand our current understanding of the environmental behavior of human pathogens in soils.
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Affiliation(s)
- Guannan Huang
- Key Laboratory of Ground Water Resource and Environment, Ministry of Education, Jilin University, Changchun 130021, China;
- Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China; (J.L.); (L.Z.); (G.L.); (L.L.); (Y.X.)
| | - Jiafen Liao
- Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China; (J.L.); (L.Z.); (G.L.); (L.L.); (Y.X.)
| | - Ziming Han
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; (Z.H.); (J.L.)
| | - Jiahang Li
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; (Z.H.); (J.L.)
| | - Liyue Zhu
- Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China; (J.L.); (L.Z.); (G.L.); (L.L.); (Y.X.)
| | - Guangze Lyu
- Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China; (J.L.); (L.Z.); (G.L.); (L.L.); (Y.X.)
| | - Lu Lu
- Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China; (J.L.); (L.Z.); (G.L.); (L.L.); (Y.X.)
| | - Yuang Xie
- Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China; (J.L.); (L.Z.); (G.L.); (L.L.); (Y.X.)
| | - Jincai Ma
- Key Laboratory of Ground Water Resource and Environment, Ministry of Education, Jilin University, Changchun 130021, China;
- Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China; (J.L.); (L.Z.); (G.L.); (L.L.); (Y.X.)
- Correspondence: ; Tel.: +86-431-85168429
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17
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Shen Y, Stedtfeld RD, Guo X, Bhalsod GD, Jeon S, Tiedje JM, Li H, Zhang W. Pharmaceutical exposure changed antibiotic resistance genes and bacterial communities in soil-surface- and overhead-irrigated greenhouse lettuce. ENVIRONMENT INTERNATIONAL 2019; 131:105031. [PMID: 31336252 DOI: 10.1016/j.envint.2019.105031] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 06/29/2019] [Accepted: 07/16/2019] [Indexed: 06/10/2023]
Abstract
New classes of emerging contaminants such as pharmaceuticals, antibiotic resistant bacteria (ARB), and antibiotic resistance genes (ARGs) have received increasing attention due to rapid increases of their abundance in agroecosystems. As food consumption is a direct exposure pathway of pharmaceuticals, ARB, and ARGs to humans, it is important to understand changes of bacterial communities and ARG profiles in food crops produced with contaminated soils and waters. This study examined the level and type of ARGs and bacterial community composition in soil, and lettuce shoots and roots under soil-surface or overhead irrigation with pharmaceuticals-contaminated water, using high throughput qPCR and 16S rRNA amplicon sequencing techniques, respectively. In total 52 ARG subtypes were detected in the soil, lettuce shoot and root samples, with mobile genetic elements (MGEs), and macrolide-lincosamide-streptogramin B (MLSB) and multidrug resistance (MDR) genes as dominant types. The overall abundance and diversity of ARGs and bacteria associated with lettuce shoots under soil-surface irrigation were lower than those under overhead irrigation, indicating soil-surface irrigation may have lower risks of producing food crops with high abundance of ARGs. ARG profiles and bacterial communities were sensitive to pharmaceutical exposure, but no consistent patterns of changes were observed. MGE intl1 was consistently more abundant with pharmaceutical exposure than in the absence of pharmaceuticals. Pharmaceutical exposure enriched Proteobacteria (specifically Methylophilaceae) and decreased bacterial alpha diversity. Finally, there were significant interplays among bacteria community, antibiotic concentrations, and ARG abundance possibly involving hotspots including Sphingomonadaceae, Pirellulaceae, and Chitinophagaceae, MGEs (intl1 and tnpA_1) and MDR genes (mexF and oprJ).
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Affiliation(s)
- Yike Shen
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, United States; Environmental Science and Policy Program, Michigan State University, East Lansing, MI 48824, United States; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, United States
| | - Robert D Stedtfeld
- Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI 48823, United States
| | - Xueping Guo
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, United States; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824, United States; College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Gemini D Bhalsod
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, United States; Cook County Unit, University of Illinois Extension, Arlington Heights, IL 60004, United States
| | - Sangho Jeon
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, United States; National Institute of Agricultural Sciences, Rural Development Administration, Wanju 54875, Republic of Korea
| | - James M Tiedje
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, United States; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824, United States
| | - Hui Li
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, United States
| | - Wei Zhang
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, United States; Environmental Science and Policy Program, Michigan State University, East Lansing, MI 48824, United States.
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18
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Alteration of microbial community for improving flavor character of Daqu by inoculation with Bacillus velezensis and Bacillus subtilis. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.04.098] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Song J, Tang H, Liang H, Luo L, Lin W. Effect of bioaugmentation on biochemical characterisation and microbial communities in
Daqu
using
Bacillus
,
Saccharomycopsis
and
Absidia. Int J Food Sci Technol 2019. [DOI: 10.1111/ijfs.14176] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jiankun Song
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering School of Biology and Biological Engineering South China University of Technology Guangzhou 510006 China
| | - Hanlan Tang
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering School of Biology and Biological Engineering South China University of Technology Guangzhou 510006 China
| | - Hebin Liang
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering School of Biology and Biological Engineering South China University of Technology Guangzhou 510006 China
| | - Lixin Luo
- Guangdong Key Laboratory of Fermentation and Enzyme Engineering School of Biology and Biological Engineering South China University of Technology Guangzhou 510006 China
| | - Weifeng Lin
- School of Food Science and Engineering South China University of Technology Guangzhou 510640 China
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20
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Gao CH, Zhang M, Wu Y, Huang Q, Cai P. Divergent Influence to a Pathogen Invader by Resident Bacteria with Different Social Interactions. MICROBIAL ECOLOGY 2019; 77:76-86. [PMID: 29858645 DOI: 10.1007/s00248-018-1207-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 05/16/2018] [Indexed: 06/08/2023]
Abstract
Bacterial social interaction is a potential influencing factor in determining the fate of invading pathogens in diverse environments. In this study, interactions between two representative resident species (Bacillus subtilis and Pseudomonas putida) and a leading food-borne disease causative pathogen (Vibrio parahaemolyticus) were examined. An antagonistic effect toward V. parahaemolyticus was observed for B. subtilis but not for P. putida. However, the relative richness of the pathogen remained rather high in B. subtilis co-cultures and was, unexpectedly, not sensitive to the initial inoculation ratios. Furthermore, two approaches were found to be efficient at modulating the relative richness of the pathogen. (1) The addition of trace glycerol and manganese to Luria-Bertani medium (LBGM) reduced the richness of V. parahaemolyticus in the co-culture with B. subtilis and in contrast, increased its richness in the co-culture with P. putida, although it did not affect the growth of V. parahaemolyticus by its own. (2) The relative richness of V. parahaemolyticus on semisolid medium decreased significantly as a function of an agar gradient, ranging from 0 to 2%. Furthermore, we explored the molecular basis of bacterial interaction through transcriptomic analysis. In summary, we investigated the interactions between a pathogen invader and two resident bacteria species, showing that the different influences on a pathogen by different types of interactions can be modulated by chemicals and medium fluidity.
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Affiliation(s)
- Chun-Hui Gao
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ming Zhang
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yichao Wu
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Qiaoyun Huang
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Peng Cai
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.
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21
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Zhang Y, Jewett C, Gilley J, Bartelt-Hunt SL, Snow DD, Hodges L, Li X. Microbial communities in the rhizosphere and the root of lettuce as affected by Salmonella-contaminated irrigation water. FEMS Microbiol Ecol 2018; 94:fiy135. [PMID: 30010741 DOI: 10.1093/femsec/fiy135] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 07/12/2018] [Indexed: 01/20/2023] Open
Abstract
Reclaimed wastewater is increasingly used as a source of irrigation water in croplands. The enteric pathogens in reclaimed wastewater may accumulate in soil and plants and cause food safety concerns. The objective of this study was to determine the effects of irrigation water containing Salmonella on the microbial communities in the rhizosphere and in the root of lettuce. The effects were also examined with three variables (soil texture, lettuce cultivar and harvest time) in a factorial design. Analyses of the 16S rRNA gene sequences show that the microbial communities in the root were significantly different from those in the rhizosphere, although ∼80% of the microbes in the root originated from the rhizosphere. Salmonella in irrigation water significantly altered the structure of the microbial community in the rhizosphere, but not in the root. Salmonella internalized in lettuce root was observed when contaminated water was used for irrigation. Compared to lettuce cultivar and harvest time, soil texture played a more significant role in shaping the bacterial communities in the rhizosphere and in the root. Results from this study could advance understanding about the long-term impact of reclaimed wastewater as a source of irrigation water on the microbiota associated with leafy green vegetables.
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Affiliation(s)
| | | | | | | | | | - Laurie Hodges
- Deptartment of Agronomy & Horticulture, University of Nebraska-Lincoln
| | - Xu Li
- Department of Civil Engineering
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22
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Zhang H, Zeng X, Bai L, Shan H, Wang Y, Wu C, Duan R, Su S. Reduced arsenic availability and plant uptake and improved soil microbial diversity through combined addition of ferrihydrite and Trichoderma asperellum SM-12F1. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:24125-24134. [PMID: 29948691 DOI: 10.1007/s11356-018-2451-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 05/29/2018] [Indexed: 06/08/2023]
Abstract
Arsenic (As) accumulation in agricultural soils is prone to crop uptake, posing risk to human health. Passivation shows potential to inactivate soil labile As and lower crop As uptake but often contributes little to improving the microbiota in As-contaminated soils. Here, the combined addition of ferrihydrite and Trichoderma asperellum SM-12F1 as a potential future application for remediation of As-contaminated soil was studied via pot experiments. The results indicated that, compared with the control treatment, the combined addition of ferrihydrite and T. asperellum SM-12F1 significantly increased water spinach shoot and root biomass by 134 and 138%, respectively, and lowered As content in shoot and root by 37 and 34%, respectively. Soil available As decreased by 40% after the combined addition. The variances in soil pH and As fractionation and speciation were responsible for the changes in soil As availability. Importantly, the combined addition greatly increased the total phospholipid fatty acids (PLFAs) and gram-positive (G+), gram-negative (G-), actinobacterial, bacterial, fungal PLFAs by 114, 68, 276, 292, 133, and 626%, respectively, compared with the control treatment. Correspondingly, the soil enzyme activities closely associated with carbon, nitrogen, and phosphorus mineralization and antioxidant activity were improved. The combination of ferrihydrite and T. asperellum SM-12F1 in soils did not reduce their independent effects.
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Affiliation(s)
- Hongxiang Zhang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture, Zhongguancun South Street No 12, Beijing, 100081, People's Republic of China
| | - Xibai Zeng
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture, Zhongguancun South Street No 12, Beijing, 100081, People's Republic of China
| | - Lingyu Bai
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture, Zhongguancun South Street No 12, Beijing, 100081, People's Republic of China
| | - Hong Shan
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture, Zhongguancun South Street No 12, Beijing, 100081, People's Republic of China
| | - Yanan Wang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture, Zhongguancun South Street No 12, Beijing, 100081, People's Republic of China
| | - Cuixia Wu
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture, Zhongguancun South Street No 12, Beijing, 100081, People's Republic of China
| | - Ran Duan
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture, Zhongguancun South Street No 12, Beijing, 100081, People's Republic of China
| | - Shiming Su
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture, Zhongguancun South Street No 12, Beijing, 100081, People's Republic of China.
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23
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Bacillus licheniformis affects the microbial community and metabolic profile in the spontaneous fermentation of Daqu starter for Chinese liquor making. Int J Food Microbiol 2017; 250:59-67. [DOI: 10.1016/j.ijfoodmicro.2017.03.010] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 03/02/2017] [Accepted: 03/13/2017] [Indexed: 11/23/2022]
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24
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Mallon CA, Elsas JDV, Salles JF. Microbial Invasions: The Process, Patterns, and Mechanisms. Trends Microbiol 2015; 23:719-729. [DOI: 10.1016/j.tim.2015.07.013] [Citation(s) in RCA: 178] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Revised: 07/20/2015] [Accepted: 07/31/2015] [Indexed: 01/20/2023]
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25
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Willers C, Jansen van Rensburg P, Claassens S. Phospholipid fatty acid profiling of microbial communities-a review of interpretations and recent applications. J Appl Microbiol 2015; 119:1207-18. [PMID: 26184497 DOI: 10.1111/jam.12902] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 07/02/2015] [Accepted: 07/03/2015] [Indexed: 11/29/2022]
Affiliation(s)
- C. Willers
- Unit for Environmental Sciences and Management; North-West University; Potchefstroom South Africa
| | | | - S. Claassens
- Unit for Environmental Sciences and Management; North-West University; Potchefstroom South Africa
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Naganandhini S, Kennedy ZJ, Uyttendaele M, Balachandar D. Persistence of Pathogenic and Non-Pathogenic Escherichia coli Strains in Various Tropical Agricultural Soils of India. PLoS One 2015; 10:e0130038. [PMID: 26101887 PMCID: PMC4477969 DOI: 10.1371/journal.pone.0130038] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 05/15/2015] [Indexed: 11/20/2022] Open
Abstract
The persistence of Shiga-like toxin producing E. coli (STEC) strains in the agricultural soil creates serious threat to human health through fresh vegetables growing on them. However, the survival of STEC strains in Indian tropical soils is not yet understood thoroughly. Additionally how the survival of STEC strain in soil diverges with non-pathogenic and genetically modified E. coli strains is also not yet assessed. Hence in the present study, the survival pattern of STEC strain (O157-TNAU) was compared with non-pathogenic (MTCC433) and genetically modified (DH5α) strains on different tropical agricultural soils and on a vegetable growing medium, cocopeat under controlled condition. The survival pattern clearly discriminated DH5α from MTCC433 and O157-TNAU, which had shorter life (40 days) than those compared (60 days). Similarly, among the soils assessed, the red laterite and tropical latosol supported longer survival of O157-TNAU and MTCC433 as compared to wetland and black cotton soils. In cocopeat, O157 recorded significantly longer survival than other two strains. The survival data were successfully analyzed using Double-Weibull model and the modeling parameters were correlated with soil physico-chemical and biological properties using principal component analysis (PCA). The PCA of all the three strains revealed that pH, microbial biomass carbon, dehydrogenase activity and available N and P contents of the soil decided the survival of E. coli strains in those soils and cocopeat. The present research work suggests that the survival of O157 differs in tropical Indian soils due to varied physico-chemical and biological properties and the survival is much shorter than those reported in temperate soils. As the survival pattern of non-pathogenic strain, MTCC433 is similar to O157-TNAU in tropical soils, the former can be used as safe model organism for open field studies.
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Affiliation(s)
- S Naganandhini
- Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Coimbatore 641003, India
| | - Z John Kennedy
- Post Harvest Technology Centre, Tamil Nadu Agricultural University, Coimbatore 641003, India
| | - M Uyttendaele
- Laboratory of Food Microbiology and Food Preservation, Department of Food Safety and Food Quality, Faculty of Bioscience Engineering, Ghent University, B-9000 Ghent, Belgium
| | - D Balachandar
- Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Coimbatore 641003, India
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Ko KY, Geornaras I, Byelashov OA, Paik HD, Kim KT, Sofos JN. Thermotolerance of Rifampicin-Resistant E
scherichia coli
O157:H7 Derivatives and Their Parental Strains in a Broth System. J Food Saf 2015. [DOI: 10.1111/jfs.12207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kyung Yuk Ko
- Center for Meat Safety & Quality; Department of Animal Sciences; Colorado State University; Fort Collins CO 80523
- Division of Food Additives and Packaging; Department of Food Safety Evaluation; Ministry of Food Drug Safety; Cheongwon-gun Chungbuk Korea
| | - Ifigenia Geornaras
- Center for Meat Safety & Quality; Department of Animal Sciences; Colorado State University; Fort Collins CO 80523
| | - Oleksandr A. Byelashov
- Center for Meat Safety & Quality; Department of Animal Sciences; Colorado State University; Fort Collins CO 80523
| | - Hyun-Dong Paik
- Department of Food Science and Biotechnology of Animal Resources; Konkuk University; Seoul Korea
| | - Kee-Tae Kim
- Department of Food Science and Biotechnology of Animal Resources; Konkuk University; Seoul Korea
| | - John N. Sofos
- Center for Meat Safety & Quality; Department of Animal Sciences; Colorado State University; Fort Collins CO 80523
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Lin J, He Y, Xu J, Chen Z, Brookes PC. Vertical profiles of pentachlorophenol and the microbial community in a paddy soil: influence of electron donors and acceptors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:9974-9981. [PMID: 25255465 DOI: 10.1021/jf502746n] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Vertical variations of pentachlorophenol (PCP) dissipation and microbial community were investigated in a paddy soil with the addition of electron acceptors (NO3(-), SO4(2-)) and donors (crop residues). Crop residues enhanced PCP dissipation by supplying dissolved organic carbon (DOC) as an electron donor, whereas NO3(-) and SO4(2-) inhibited it. The dissipation of PCP in electron donor treatments resulted in the accumulation of 3,4,5-trichlorophenol (3,4,5-TCP) except for wheat residues. The abundance and diversity of phospholipid fatty acids (PLFAs) decreased with increasing soil depth. The succession of predominant PLFAs shifted from aerobic bacteria to anaerobic bacteria when electron acceptors were changed to electron donors. The saturated/monounsaturated fatty acids (S/M) ratio increased with soil depth, which probably implied that nutrient turnover rate declined after the accumulation of 3,4,5-TCP. The results showed that the addition of electron donors and acceptors modified the microbial communities, which then further influenced the degradation pathway of PCP.
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Affiliation(s)
- Jiajiang Lin
- Institute of Soil and Water Resources and Environmental Science, Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition, Zhejiang University , Hangzhou 310058, China
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Wang H, Ibekwe AM, Ma J, Wu L, Lou J, Wu Z, Liu R, Xu J, Yates SR. A glimpse of Escherichia coli O157:H7 survival in soils from eastern China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 476-477:49-56. [PMID: 24463024 DOI: 10.1016/j.scitotenv.2014.01.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 01/02/2014] [Accepted: 01/02/2014] [Indexed: 06/03/2023]
Abstract
Escherichia coli O157:H7 (E. coli O157:H7) is an important food-borne pathogen, which continues to be a major public health concern worldwide. It is known that E. coli O157:H7 survive in soil environment might result in the contamination of fresh produce or water source. To investigate how the soils and their properties affect E. coli O157:H7 survival, we studied E. coli O157:H7 survival dynamics in 14 soils collected in eastern China from the warm-temperate zone to subtropical zone. Results showed that E. coli O157:H7 survival as a function of time can be well described by the Weibull model. The calculated td values (survival time to reach the detection limit, 100 colony forming units per gram oven-dried weight of soil) for the test soils were between 1.4 and 25.8 days. A significantly longer survival time (td) was observed in neutral or alkaline soils from north-eastern China (the warm-temperate zone) than that in acidic soils from south-eastern China (the subtropical zone). Distinct E. coli O157:H7 survival dynamics was related to soil properties. Stepwise multiple regression analysis revealed that the td values were significantly enhanced by soil microbial biomass carbon and total nitrogen, but were significantly reduced by amorphous Al2O3 and relative abundance of Chloroflexi. It should pay more attention to E. coli O157:H7 long survival in soils and its potential environmental contamination risk.
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Affiliation(s)
- Haizhen Wang
- Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition, College of Environmental and Natural Resource Sciences, Zhejiang University, Hangzhou 310058, China; USDA-ARS, U.S. Salinity Laboratory, Riverside, CA 92507, USA; Department of Environmental Sciences, University of California, Riverside, CA 92521, USA
| | - A Mark Ibekwe
- USDA-ARS, U.S. Salinity Laboratory, Riverside, CA 92507, USA
| | - Jincai Ma
- USDA-ARS, U.S. Salinity Laboratory, Riverside, CA 92507, USA; Department of Environmental Sciences, University of California, Riverside, CA 92521, USA
| | - Laosheng Wu
- Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition, College of Environmental and Natural Resource Sciences, Zhejiang University, Hangzhou 310058, China; Department of Environmental Sciences, University of California, Riverside, CA 92521, USA
| | - Jun Lou
- Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition, College of Environmental and Natural Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Zhigang Wu
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| | - Renyi Liu
- Department of Botany and Plant Sciences, University of California, Riverside, CA 92521, USA
| | - Jianming Xu
- Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition, College of Environmental and Natural Resource Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Scott R Yates
- USDA-ARS, U.S. Salinity Laboratory, Riverside, CA 92507, USA.
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