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Tan Z, Beltrán-Flores E, Ramos-Meza GD, Alonso LL, Sarrà M. Eliminating antibiotics by white-rot-fungi Trametes versicolor from manure solids and synthetic wastewater. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2025:126504. [PMID: 40412637 DOI: 10.1016/j.envpol.2025.126504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2025] [Revised: 05/03/2025] [Accepted: 05/19/2025] [Indexed: 05/27/2025]
Abstract
Antibiotics have been abused in livestock as veterinary drug and feed additive. Their incomplete metabolization by animals resulted in heavy accumulation in livestock manure, and therefore they can pose a threat to the environment. In this study, the mechanism of three antibiotics (oxytetracycline (OTC), sulfadiazine (SDZ), enrofloxacin (ENR)) removal/biodegradation by Trametes versicolor pellets in air-pulse fluidized-bed reactor was explored, and the effects of wood immobilized T. versicolor on four antibiotics (OTC, SDZ, ENR and chloramphenicol (CAP)) removal in solid cow manures were evaluated. T. versicolor could remove OTC, SDZ, ENR through adsorption and biodegradation, with the removal efficiency at 92% and 98% in 21 hours and 98% after 68 hours, respectively. The removal kinetics of those three antibiotics fitted well with the first-order kinetic model, with the removal constant k at -0.238 h-1, -0.102 h-1 and -0.023 h-1, respectively. T. versicolor could biodegrade those three antibiotics using laccase and cytochrome P450 system with the order SDZ≈OTC>ENR. Furthermore, wood immobilized T. versicolor promoted SDZ, OTC, ENR and chloramphenicol (CAP) antibiotic biodegradation in cow manure, especially in high inoculation ratio (wood immobilized T. versicolor: solid cow manures=1:2). This study revealed the mechanism of simultaneous SDZ, OTC, ENR and CAP antibiotic removal/biodegradation by white-rot fungi T. versicolor even by wood immobilized T. versicolor in solid cow manures, which provide a theoretical basis for future application of biological removal of antibiotics present in wastewater and solid manures.
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Affiliation(s)
- Zewen Tan
- Departament d'Enginyeria Química, Biològica i Ambiental, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain; National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Eduardo Beltrán-Flores
- Departament d'Enginyeria Química, Biològica i Ambiental, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Gisselle D Ramos-Meza
- Departament d'Enginyeria Química, Biològica i Ambiental, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
| | - Lucas L Alonso
- Catalan Institute for Water Research (ICRA), Carrer Emili Grahit 101, 17003 Girona, Spain
| | - Montserrat Sarrà
- Departament d'Enginyeria Química, Biològica i Ambiental, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
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Tong Z, Zhang H, Li S, Ma L, Li Z, Yong X, Liu F, Zhou J. The new strategies for high efficiency removal of antibiotics and antibiotic resistance genes by direct bio-drying of biogas slurry: Microbiological mechanisms. WATER RESEARCH 2025; 283:123763. [PMID: 40347569 DOI: 10.1016/j.watres.2025.123763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2025] [Revised: 04/16/2025] [Accepted: 05/01/2025] [Indexed: 05/14/2025]
Abstract
High levels of antibiotics and antibiotic resistance genes (ARGs) still exist in biogas slurry after anaerobic digestion of cow manure. In this study, direct bio-drying strategies of cow manure biogas slurry without solid-liquid separation for the removal of antibiotics and ARGs were explored. The results showed that, after direct bio-drying of biogas slurry, the moisture contents decreased to 25.2 %-31.5 %. The maximum temperatures of the piles reached 76.1-77.4 °C, which is close to ultra-high temperatures (>80 °C). Direct biogas slurry bio-drying (CK treatment) achieved efficient removal of antibiotics, ARGs, and mobile genetic elements (MGEs) (95.4 %, 98.6 % and 86.7 % removal, respectively). Compared to the CK treatment, molecular membrane covering (MMC) alone was the most effective in further significantly decreasing the antibiotic concentration and the abundance of ARGs and MGEs in the final bio-dried samples, followed by food waste hydrochar (FHC) addition alone. Methanogenic archaea were identified as potential hosts for ARGs based on Network analysis. FHC addition-MMC increased the abundance of potential hosts for ARGs and promoted the expression of microbial methane metabolism function relative to the CK treatment during the later stages of bio-drying, thereby decreasing the removal efficiency of ARGs. The results of structural equation model and redundancy analysis showed that MGEs had the most significant direct effect on ARGs and moisture content had the highest relative contribution to changes in ARGs. In summary, direct bio-drying strategies were able to efficiently remove antibiotics and ARGs from cow manure biogas slurry and also achieve biological dewatering of the biogas slurry.
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Affiliation(s)
- Zhenye Tong
- Bioenergy Research Institute, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Haorong Zhang
- Bioenergy Research Institute, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Siqin Li
- Bioenergy Research Institute, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Liqian Ma
- Bioenergy Research Institute, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Zhenguo Li
- Bioenergy Research Institute, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China; Environmental Engineering Laboratory, College of Resource and Environment, Shanxi Agricultural University, Taigu 030801, China
| | - Xiaoyu Yong
- Bioenergy Research Institute, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China
| | - Fenwu Liu
- Environmental Engineering Laboratory, College of Resource and Environment, Shanxi Agricultural University, Taigu 030801, China.
| | - Jun Zhou
- Bioenergy Research Institute, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, China.
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Peng N, Zhang J, Hu R, Liu S, Liu F, Fan Y, Yang H, Huang J, Ding J, Chen R, Li L, He Z, Wang C. Hidden pathogen risk in mature compost: Low optimal growth temperature confers pathogen survival and activity during manure composting. JOURNAL OF HAZARDOUS MATERIALS 2024; 480:136230. [PMID: 39442307 DOI: 10.1016/j.jhazmat.2024.136230] [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: 07/31/2024] [Revised: 10/10/2024] [Accepted: 10/19/2024] [Indexed: 10/25/2024]
Abstract
Livestock manure is a major reservoir for pathogens, posing significant environmental risks if used untreated. The efficacy of composting in fully inactivating pathogens remains controversial, particularly regarding the influence of their optimal growth temperature (OGT). This study investigated the composition and dynamic changes of pathogen communities and virulence factors (VFs) during the composting of chicken, bovine, ovine, and swine manure. We identified 134 pathogens across 16 composting piles, with ten pathogens exhibited increased abundance and transcriptional activity in curing phase. They included high-risk VFs-carrying pathogens, such as Mycolicibacterium thermoresistibile and Mycolicibacterium phlei, indicating the hidden pathogen risk in mature compost. Community-scale analyses revealed a linkage of these pathogens' survival with their low OGT and an increased number of heat shock proteins (HSPs), enabling them to tolerate high temperatures and regrow. Integrating our data with prior composting studies, we found that the surviving pathogens express 42 VFs and their persistence in mature compost was a widespread issue, highlighting a greater risk of pathogen spread than previously thought. Finally, we compiled the 134 pathogens and 1009 VFs into a comprehensive Environmental Risk of Compost Pathogens (ERCP) catalog, providing a valuable resource for routine pathogen surveillance.
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Affiliation(s)
- Nenglong Peng
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510006, China
| | - Junmao Zhang
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510006, China
| | - Ruiwen Hu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510006, China
| | - Songfeng Liu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510006, China
| | - Fei Liu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510006, China
| | - Yijun Fan
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510006, China
| | - Huijing Yang
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510006, China
| | - Jing Huang
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510006, China
| | - Jijuan Ding
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510006, China
| | - Ruihan Chen
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510006, China
| | - Li Li
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510006, China
| | - Zhili He
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510006, China
| | - Cheng Wang
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou 510006, China.
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Qian Y, Lai L, Cheng M, Fang H, Fan D, Zylstra GJ, Huang X. Identification, characterization, and distribution of novel amidase gene aphA in sphingomonads conferring resistance to amphenicol antibiotics. Appl Environ Microbiol 2024; 90:e0151224. [PMID: 39431819 PMCID: PMC11577797 DOI: 10.1128/aem.01512-24] [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: 08/01/2024] [Accepted: 09/20/2024] [Indexed: 10/22/2024] Open
Abstract
Amphenicol antibiotics, such as chloramphenicol (CHL), thiamphenicol (TAP), and florfenicol (Ff), are high-risk emerging pollutants. Their extensive usage in aquaculture, livestock, and poultry farming has led to an increase in bacterial antibiotic resistance and facilitated the spread of resistance genes. Yet, limited research has been conducted on the co-resistance of CHL, TAP, and Ff. Herein, a novel amidase AphA was identified from a pure cultured strain that can concurrently mediate the hydrolytic inactivation of CHL, TAP, and Ff, yielding products p-nitrophenylserinol, thiamphenicol amine (TAP-amine), and florfenicol amine (Ff-amine), respectively. The antibacterial activity of these antibiotic hydrolysates exhibited a significant reduction or complete loss in comparison to the parent compounds. Notably, AphA shared less than 26% amino acid sequence identity with previously reported enzymes and exhibited high conservation within the sphingomonad species. Through enzymatic kinetic analysis, the AphA exhibited markedly superior affinity and catalytic activity toward Ff in comparison to CHL and TAP. Site-directed mutagenesis analysis revealed the indispensability of catalytic triad residues, particularly serine 153 and histidine 277, in forming crucial hydrogen bonds essential for AphA's hydrolytic activity. Comparative genomic analysis showed that aphA genes in some species are closely adjacent to various transposable elements, indicating that there is a high potential risk of horizontal gene transfer (HGT). This study established a hydrolysis resistance mechanism of amphenicol antibiotics in sphingomonads, which offers theoretical guidance and a novel marker gene for assessing the prevalent risk of amphenicol antibiotics in the environment.IMPORTANCEAmphenicol antibiotics are pervasive emerging contaminants that present a substantial threat to ecological systems. Few studies have elucidated resistance genes or mechanisms that can act on CHL, TAP, and Ff simultaneously. The results of this study fill this knowledge gap and identify a novel amidase AphA from the bacterium Sphingobium yanoikuyae B1, which mediates three typical amphenicol antibiotic inactivation, and the molecular mechanism is elucidated. The diverse types of transposable elements were identified in the flanking regions of the aphA gene, indicating the risk of horizontal transfer of this antibiotic resistance genes (ARG). These findings offer new insights into the bacterial resistance to amphenicol antibiotics. The gene reported herein can be utilized as a novel genetic diagnostic marker for monitoring the environmental fate of amphenicol antibiotics, thereby enriching risk assessment efforts within the context of antibiotic resistance.
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Affiliation(s)
- Yingying Qian
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Lin Lai
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Minggen Cheng
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Hua Fang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, Zhejiang, China
| | - Dandan Fan
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Gerben J. Zylstra
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, New Jersey, USA
| | - Xing Huang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
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Lan L, Chen Y, Ji H, Wang T, Zhang R, Wong MH, Zhang J. Antibiotic-resistant genes derived from commercial organic fertilizers are transported to balconies of residential buildings by express delivery. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:500. [PMID: 39508960 DOI: 10.1007/s10653-024-02279-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2024] [Accepted: 10/17/2024] [Indexed: 11/15/2024]
Abstract
The rise in antibiotic-resistant genes (ARGs) has recently become a pressing issue, with livestock manure identified as a significant source of these genes. Yet, the distribution of fertilizers derived from livestock manure sold online, potentially containing high levels of ARGs and antibiotic-resistant bacteria (ARB), is often not considered. Our study involved a random survey of commercial organic fertilizers available on online marketplaces, focusing on 13 common ARGs and 2 integrons (intI1, intI2). We found significant ARGs linked to sulfonamides, macrolides, and tetracycline in the 20 fertilizer samples we tested. The gene copy numbers for ermC, sul2, and tetL were exceptionally high, reaching up to 1011 copies per gram of fertilizer in specific samples. Additionally, 18 out of 20 samples contained the critical β-lactam resistance genes blaTEM and blaKPC, with gene copy numbers up to 1010 copies/g. Integrons, intI1, and intI2 were present in all samples, with abundances ranging from 103 to 1010 copies/g. We categorized the 20 samples into three types for further analysis: poultry manure, livestock manure, and earthworm manure. Our findings indicated a high presence of ARGs in poultry manure compared to a lower occurrence in earthworm manure. The study also showed a strong correlation between integrons and specific ARGs. This research underscores the potential risk of commercial organic fertilizers as a pathway for spreading ARGs from the animal breeding environment to human settings through express transportation.
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Affiliation(s)
- Lihua Lan
- Key Laboratory of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province, School of Environment and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, People's Republic of China
| | - Yuxin Chen
- Key Laboratory of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province, School of Environment and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, People's Republic of China
| | - Honghu Ji
- Jinhua Academy of Agricultural Sciences, Jinhua, 321017, People's Republic of China
| | - Ting Wang
- Key Laboratory of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province, School of Environment and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, People's Republic of China
| | - Ranran Zhang
- Key Laboratory of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province, School of Environment and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, People's Republic of China
| | - Ming Hung Wong
- Consortium On Health, Environment, Education, and Research (CHEER), Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong SAR, People's Republic of China
| | - Jin Zhang
- Key Laboratory of Recycling and Eco-Treatment of Waste Biomass of Zhejiang Province, School of Environment and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, People's Republic of China.
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Wang S, Fang L, Sun X, Lu W. Occurrence and distribution of antibiotic resistance genes in urban rivers with black-odor water of Harbin, China. ENVIRONMENTAL RESEARCH 2024; 259:119497. [PMID: 38944102 DOI: 10.1016/j.envres.2024.119497] [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: 04/02/2024] [Revised: 06/04/2024] [Accepted: 06/24/2024] [Indexed: 07/01/2024]
Abstract
Antibiotic resistance gene contamination in polluted rivers remains a widely acknowledged environmental issue. This study focused on investigating the contamination conditions of antibiotic resistance genes (ARGs) in Harbin's urban black-odor rivers, specifically Dongfeng Ditch and Hejia Ditch. The research employed a SmartChip Real-Time PCR System to explore the types, abundance, and distribution of ARGs in diverse habitats, such as surface water and sediment. Additionally, the study examined the correlation of ARGs with mobile genetic elements (MGEs) and various environmental factors. It was found that antibiotic resistance genes were prevalent in both water and sediment within the black-odor ditches. The dominant types of ARGs identified included aminoglycoside, sulfonamide, multidrug-resistant, and β-lactam ARGs. Notably, the top four ARGs, in terms of relative abundance, were sul1, fox5, qacEdelta1-01 and aadA1. Most categories of ARGs have significant positive connections with MGEs, indicating that the enrichment and spreading of ARGs in rivers are closely related to MGEs. Based on the correlation analysis, it is found that environmental factors such as dissolved oxygen (DO), ammonia nitrogen (NH4-N), and phosphate (PO4-P) played a substantial role in influencing the variations observed in ARGs. By employing a risk assessment framework based on the human association, host pathogenicity, and mobility of ARGs, the identification of seven high-risk ARGs was achieved. In addition, it is important to assess the environmental risk of ARGs from multiple perspectives (abundance,detection rateand mobility). This study provides a significant reference regarding the presence of ARGs contamination in urban inland black-odor rivers, essential for assessing the health risks associated with ARGs and devising strategies to mitigate the threat of antibiotic resistance.
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Affiliation(s)
- Shuangshuang Wang
- School of Forestry, Northeast Forestry University, Harbin, 150040, China
| | - Lanjin Fang
- School of Forestry, Northeast Forestry University, Harbin, 150040, China
| | - Xingbin Sun
- School of Forestry, Northeast Forestry University, Harbin, 150040, China.
| | - Weimin Lu
- Heilongjiang Province Light Industrial Science Research Institute, Harbin, Heilongjiang, 150010, China
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Wang Z, Fu Y, Zheng YL, Jiang N, Jiang H, Wu C, Lv Z, Krüger-Haker H, Feßler AT, Schwarz S, Wang Y. Fate of florfenicol and linezolid resistance genes and their bacterial hosts during two waste treatment models in swine feedlots. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 939:173645. [PMID: 38821272 DOI: 10.1016/j.scitotenv.2024.173645] [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: 02/28/2024] [Revised: 05/16/2024] [Accepted: 05/28/2024] [Indexed: 06/02/2024]
Abstract
Florfenicol resistance genes (FRGs) are widely present in livestock farms. The aim of this study was to evaluate the removal efficiencies of FRGs as well as the relationships between FRGs, mobile genetic elements (MGEs) and bacterial communities during the natural drying (ND) and anaerobic digestion (AD) processes of manure treatment in swine farms by combining bacterial isolation, quantitative PCR and metagenomic approaches. Solid manure showed a higher abundance of FRGs than fresh manure and was the main contamination source of fexA and fexB in ND farms, whilst biogas slurry displayed a lower abundance of FRGs than the wastewater in AD farms. Moreover, fresh manure and wastewater showed a high abundance of optrA, and wastewater was the main contamination source of cfr in both ND and AD farms. Both optrA/fexA-positive enterococci and cfr/fexA-positive staphylococci were mainly isolated along the farms' treatment processes. The cfr-positive staphylococci were highly prevalent in wastewater (57.14 % - 100 %) and may be associated with nasal-derived cfr-positive porcine staphylococci. An increased abundance of Enterococcus, Jeotgalibaca and Vagococcus in the bacterial community structures may account for the high optrA abundance in wastewater and Jeotgalibaca may be another potential host of optrA. Furthermore, the abundance of FRG-related MGEs increased by 22.63 % after the ND process and decreased by 66.96 % in AD farms. A significant correlation was observed between cfr and ISEnfa4, whereas no significance was found between optrA and IS1216E, although IS1216E is the predominant insertion sequence involved in the transfer of optrA. In conclusion, manure and wastewater represented independent pollution sources of FRGs in swine farms. Associated MGEs might play a key role in the transfer and persistence of FRGs. The AD process was more efficient in the removal of FRGs than the ND method, nevertheless a longer storage of slurry may be required for a complete removal.
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Affiliation(s)
- Zheng Wang
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, China.
| | - Yulin Fu
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China; Central Laboratory Department, Shenzhen Centre for Disease Control and Prevention, Shenzhen, Guangdong, China
| | - Yong-Liang Zheng
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, China
| | - Nansong Jiang
- Research Center for Poultry Diseases of Institute of Animal Husbandry and Veterinary Medicine, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Haiyang Jiang
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Congming Wu
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Ziquan Lv
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Henrike Krüger-Haker
- Institute of Microbiology and Epizootics, Center for Infection Medicine, School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany; Veterinary Centre for Resistance Research, School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Andrea T Feßler
- Institute of Microbiology and Epizootics, Center for Infection Medicine, School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany; Veterinary Centre for Resistance Research, School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany
| | - Stefan Schwarz
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China; Institute of Microbiology and Epizootics, Center for Infection Medicine, School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany; Veterinary Centre for Resistance Research, School of Veterinary Medicine, Freie Universität Berlin, Berlin, Germany.
| | - Yang Wang
- National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, China.
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8
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Yu X, Lv Y, Wang Q, Wang W, Wang Z, Wu N, Liu X, Wang X, Xu X. Deciphering and predicting changes in antibiotic resistance genes during pig manure aerobic composting via machine learning model. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:33610-33622. [PMID: 38689043 DOI: 10.1007/s11356-024-33087-2] [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: 01/03/2024] [Accepted: 03/21/2024] [Indexed: 05/02/2024]
Abstract
Livestock manure is one of the most important pools of antibiotic resistance genes (ARGs) in the environment. Aerobic composting can effectively reduce the spread of antibiotic resistance risk in livestock manure. Understanding the effect of aerobic composting process parameters on manure-sourced ARGs is important to control their spreading risk. In this study, the effects of process parameters on ARGs during aerobic composting of pig manure were explored through data mining based on 191 valid data collected from literature. Machine learning (ML) models (XGBoost and Random Forest) were utilized to predict the rate of ARGs changes during pig manure composting. The model evaluation index of the XGBoost model (R2 = 0.651) was higher than that of the Random Forest (R2 = 0.490), indicating that XGBoost had better prediction performance. Feature importance was further calculated for the XGBoost model, and the XGBoost black box model was interpreted by Shapley additive explanations analysis. Results indicated that the influencing factors on the ARGs variation in pig manure were sequentially divided into thermophilic period, total composting period, composting real time, and thermophilic stage average temperature. The findings gave an insight into the application of ML models to predict and decipher the ARG changes during manure composting and provided suggestions for better composting manipulation and optimization of process parameters.
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Affiliation(s)
- Xiaohui Yu
- Key Laboratory of Smart Breeding (Co-construction by Ministry and Province) of Ministry of Agriculture and Rural Affairs, Tianjin Agricultural University, Tianjin, 300392, China
- College of Engineering and Technology, Tianjin Agricultural University, Tianjin, 300392, China
| | - Yang Lv
- College of Engineering and Technology, Tianjin Agricultural University, Tianjin, 300392, China
| | - Qing Wang
- Key Laboratory of Smart Breeding (Co-construction by Ministry and Province) of Ministry of Agriculture and Rural Affairs, Tianjin Agricultural University, Tianjin, 300392, China
- College of Engineering and Technology, Tianjin Agricultural University, Tianjin, 300392, China
| | - Wenhao Wang
- College of Chemical Engineering and Material Science, Tianjin University of Science & Technology, Tianjin, 300457, China
| | - Zhiqiang Wang
- Key Laboratory of Smart Breeding (Co-construction by Ministry and Province) of Ministry of Agriculture and Rural Affairs, Tianjin Agricultural University, Tianjin, 300392, China
- College of Engineering and Technology, Tianjin Agricultural University, Tianjin, 300392, China
| | - Nan Wu
- Key Laboratory of Smart Breeding (Co-construction by Ministry and Province) of Ministry of Agriculture and Rural Affairs, Tianjin Agricultural University, Tianjin, 300392, China.
- College of Engineering and Technology, Tianjin Agricultural University, Tianjin, 300392, China.
| | - Xinyuan Liu
- College of Engineering and Technology, Tianjin Agricultural University, Tianjin, 300392, China
| | - Xiaobo Wang
- Key Laboratory of Smart Breeding (Co-construction by Ministry and Province) of Ministry of Agriculture and Rural Affairs, Tianjin Agricultural University, Tianjin, 300392, China
- College of Agronomy and Resource and Environment, Tianjin Agricultural University, Tianjin, 300392, China
| | - Xiaoyan Xu
- Key Laboratory of Smart Breeding (Co-construction by Ministry and Province) of Ministry of Agriculture and Rural Affairs, Tianjin Agricultural University, Tianjin, 300392, China
- College of Agronomy and Resource and Environment, Tianjin Agricultural University, Tianjin, 300392, China
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9
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Chu Y, Wang D, Hao W, Sun R, Sun J, Liu Y, Liao X. Prevalence, antibiotic resistance, virulence genes and molecular characteristics of Salmonella isolated from ducks and wild geese in China. Food Microbiol 2024; 118:104423. [PMID: 38049277 DOI: 10.1016/j.fm.2023.104423] [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] [Received: 09/25/2023] [Revised: 11/01/2023] [Accepted: 11/03/2023] [Indexed: 12/06/2023]
Abstract
Salmonella is a major foodborne pathogen and the cause of significant morbidity and mortality via consumption of contaminated meat and meat-products. The prevalence of Salmonella in ducks and wild geese in China are poorly characterized and these sources represent a potential pool that could be transferred to farm-reared fowl. In this study, we isolated 335 (18.3%) Salmonella from 1830 samples and identified 24 serotypes and most prevalent were Salmonella Indiana, Salmonella Kentucky and Salmonella Typhimurium. Whole genome sequencing revealed the presence of the dominant sequence types ST17, ST198 and ST19 for these three serotypes, respectively. In addition, these isolates were most likely clonally spread across different regions while S. Kentucky also crossed the species barrier. The majority of the Salmonella isolates possessed β-lactam and fluoroquinolone resistance and these were consistent with antibiotic resistance gene profiles. We also identified 8 plasmid replicon types and all isolates possessed virulence genes and the numbers were greatest for S. Enteritidis and S. Typhimurium isolates. This study provides novel insights concerning the epidemiology of Salmonella in ducks and wild geese and provides basic data for public health screening and management.
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Affiliation(s)
- Ying Chu
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China; Laboratory of Veterinary Pharmacology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China; Animal Infectious Diseases Laboratory, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Dong Wang
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China; Laboratory of Veterinary Pharmacology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Weihua Hao
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China; Laboratory of Veterinary Pharmacology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Ruanyang Sun
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China; Laboratory of Veterinary Pharmacology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Jian Sun
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China; Laboratory of Veterinary Pharmacology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Yahong Liu
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China; Laboratory of Veterinary Pharmacology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Xiaoping Liao
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China; Laboratory of Veterinary Pharmacology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China.
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10
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Guo X, Chen H, Tong Y, Wu X, Tang C, Qin X, Guo J, Li P, Wang Z, Liu W, Mo J. A review on the antibiotic florfenicol: Occurrence, environmental fate, effects, and health risks. ENVIRONMENTAL RESEARCH 2024; 244:117934. [PMID: 38109957 DOI: 10.1016/j.envres.2023.117934] [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: 10/03/2023] [Revised: 12/09/2023] [Accepted: 12/11/2023] [Indexed: 12/20/2023]
Abstract
Florfenicol, as a replacement for chloramphenicol, can tightly bind to the A site of the 23S rRNA in the 50S subunit of the 70S ribosome, thereby inhibiting protein synthesis and bacterial proliferation. Due to the widespread use in aquaculture and veterinary medicine, florfenicol has been detected in the aquatic environment worldwide. Concerns over the effects and health risks of florfenicol on target and non-target organisms have been raised in recent years. Although the ecotoxicity of florfenicol has been widely reported in different species, no attempt has been made to review the current research progress of florfenicol toxicity, hormesis, and its health risks posed to biota. In this study, a comprehensive literature review was conducted to summarize the effects of florfenicol on various organisms including bacteria, algae, invertebrates, fishes, birds, and mammals. The generation of antibiotic resistant bacteria and spread antibiotic resistant genes, closely associated with hormesis, are pressing environmental health issues stemming from overuse or misuse of antibiotics including florfenicol. Exposure to florfenicol at μg/L-mg/L induced hormetic effects in several algal species, and chromoplasts might serve as a target for florfenicol-induced effects; however, the underlying molecular mechanisms are completely lacking. Exposure to high levels (mg/L) of florfenicol modified the xenobiotic metabolism, antioxidant systems, and energy metabolism, resulting in hepatotoxicity, renal toxicity, immunotoxicity, developmental toxicity, reproductive toxicity, obesogenic effects, and hormesis in different animal species. Mitochondria and the associated energy metabolism are suggested to be the primary targets for florfenicol toxicity in animals, albeit further in-depth investigations are warranted for revealing the long-term effects (e.g., whole-life-cycle impacts, multigenerational effects) of florfenicol, especially at environmental levels, and the underlying mechanisms. This will facilitate the evaluation of potential hormetic effects and construction of adverse outcome pathways for environmental risk assessment and regulation of florfenicol.
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Affiliation(s)
- Xingying Guo
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, 515063, China
| | - Haibo Chen
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, 515063, China
| | - Yongqi Tong
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, 515063, China
| | - Xintong Wu
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, 515063, China
| | - Can Tang
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, 515063, China
| | - Xian Qin
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong SAR, China
| | - Jiahua Guo
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an, 710127, China
| | - Ping Li
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, 515063, China
| | - Zhen Wang
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, 515063, China
| | - Wenhua Liu
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, 515063, China
| | - Jiezhang Mo
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, 515063, China.
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11
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Li C, Li N, Chen X, Li X, Liu C, Abbas A, Wang Y, Qi S, Zhang Y, Li D, Zhang W, Shu G, Lin J, Li H, Xu F, Peng G, Fu H. Enhancement of dissolution rate and oral bioavailability of poorly soluble drug florfenicol by using solid dispersion and effervescent disintegration technology. Drug Dev Ind Pharm 2024; 50:45-54. [PMID: 38095592 DOI: 10.1080/03639045.2023.2295488] [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] [Received: 10/05/2023] [Accepted: 12/01/2023] [Indexed: 12/29/2023]
Abstract
OBJECTIVE Florfenicol(FF) is an excellent veterinary antibiotic, limited by poor solubility and poor bioavailability. SIGNIFICANCE Here in, we aimed to explore the applicability of fast disintegrating tablets compressed from Florfenicol-loaded solid dispersions (FF-SD-FDTs) to improve the dissolution rate and oral bioavailability of Florfenicol. METHODS Utilizing selecting appropriate preparation methods and carriers, the solid dispersions of Florfenicol (FF-SDs) were prepared by solvent evaporation and the fast disintegrating tablets (FF-SD-FDTs) were prepared by the direct compression (DC) method. RESULTS The tablet properties including hardness, friability, disintegration time, weight variation, etc. all met the specifications of Chinese Veterinary Pharmacopeia(CVP). FF-SD-FDTs significantly improved drug dissolution and dispersion of FF in vitro compared to florfenicol conventional tablets (FF-CTs). A pharmacokinetics study in German shepherd dogs proved the AUC0-∞ and Cmax values of FF-SD-FDTs are 1.38 and 1.38 times more than FF-CTs, respectively. CONCLUSIONS Overall, it can be concluded that FF-SD-FDTs with excellent disintegration and dissolution properties were successfully produced, which greatly improved the oral bioavailability of the poorly soluble drug FF, and the study provided a new idea for a broader role of FF in pet clinics.
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Affiliation(s)
- Chao Li
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Nanxin Li
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Xingyu Chen
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Xiaojuan Li
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Chang Liu
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Awn Abbas
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yueli Wang
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Shuangcai Qi
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yifan Zhang
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Dongbo Li
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Wei Zhang
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Gang Shu
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Juchun Lin
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Haohuan Li
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Funeng Xu
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Guangneng Peng
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
| | - Hualin Fu
- Department of Pharmacy, College of Vet Medicine, Sichuan Agricultural University, Chengdu, China
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12
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Wanyan R, Pan M, Mai Z, Xiong X, Wang S, Han Q, Yu Q, Wang G, Wu S, Li H. Fate of high-risk antibiotic resistance genes in large-scale aquaculture sediments: Geographical differentiation and corresponding drivers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167068. [PMID: 37714353 DOI: 10.1016/j.scitotenv.2023.167068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/22/2023] [Accepted: 09/12/2023] [Indexed: 09/17/2023]
Abstract
Antibiotic resistance genes (ARGs), emerging environmental contaminants, have become challenges of public health security. However, the distribution and drivers of ARGs, especially high-risk ARGs, in large-scale aquaculture sediments remain unknown. Here, we collected sediment samples from 40 crayfish ponds in seven main crayfish culture provinces in China and then investigated the distribution and risk of ARGs based on high-throughput sequencing and quantitative PCR techniques. Our results suggested that aquaculture sediment was potential reservoir of ARGs and the abundance of aadA-02 was the highest. High-risk ARG (floR) was also prevalent in the sediment and was the most abundant in Jiangsu Province, where opportunistic pathogens were also enriched. The abundance of floR was positively correlated with different environmental factors, such as total phosphorus in water and total carbon in sediment. In addition, Mycobacterium sp., opportunistic pathogenic bacteria, might be potential host for floR. Furthermore, the potential propagation pathway of ARGs was from sediment to crayfish gut, and Bacteroidetes and Proteobacteria might be the main bacterial groups responsible for the proliferation of ARGs. Generally, our results illustrate that pond sediment may be an ARG reservoir of aquatic animals. Meanwhile, our study helps develop valuable strategies for accessing risks and managing ARGs.
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Affiliation(s)
- Ruijun Wanyan
- School of Public Health, Lanzhou University, Lanzhou 730000, China; Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Meijing Pan
- Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Zhan Mai
- Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiong Xiong
- Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Sijie Wang
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Qian Han
- School of Public Health, Lanzhou University, Lanzhou 730000, China
| | - Qiaoling Yu
- State Key Laboratory of Grassland Agro-ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Gansu 730000, China
| | - Guitang Wang
- Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shangong Wu
- Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Huan Li
- School of Public Health, Lanzhou University, Lanzhou 730000, China; State Key Laboratory of Grassland Agro-ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Gansu 730000, China.
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13
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Zhou Y, Li J, Wen X, Li Q. Antibiotic resistance gene profiles and evolutions in composting regulated by reactive oxygen species generated via nano ZVI loaded on biochar. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 902:166487. [PMID: 37611721 DOI: 10.1016/j.scitotenv.2023.166487] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/14/2023] [Accepted: 08/20/2023] [Indexed: 08/25/2023]
Abstract
In this study, nano zero-valent iron loaded on biochar (BC-nZVI) was analyzed for its effects on antibiotic resistance genes (ARGs) in composting. The results showed that BC-nZVI increased reactive oxygen species (ROS) production, and the peak values of H2O2 and OH were 22.95 % and 55.30 % higher than those of the control group, respectively. After 65 days, the relative abundances of representative ARGs decreased by 56.12 % in the nZVI group (with BC-nZVI added). An analysis of bacterial communities and networks revealed that Actinobacteria, Proteobacteria, and Firmicutes were the main hosts for ARGs, and BC-nZVI weakened the link between ARGs and host bacteria. Distance-based redundancy analysis showed that BC-nZVI altered the microbial community structure through environmental factors and that most ARGs were negatively correlated with ROS, suggesting that ROS significantly affected the relative abundance of ARGs. According to these results, BC-nZVI showed potential for decreasing the relative abundance of ARGs in composting.
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Affiliation(s)
- Yucheng Zhou
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Jixuan Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Xiaoli Wen
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Qunliang Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
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14
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Trejo B, Russell M, Bartelt-Hunt S, Beni NN, Snow DD, Messer TL. Occurrence and persistence of antibiotics administered to cattle in a newly established feedlot. JOURNAL OF ENVIRONMENTAL QUALITY 2023; 52:1193-1205. [PMID: 37739441 DOI: 10.1002/jeq2.20516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 09/11/2023] [Indexed: 09/24/2023]
Abstract
The practice of using therapeutic and prophylactic veterinary antibiotics in livestock farming is a worldwide phenomenon. Over the last decade, there has been a growing concern of antibiotic residues entering the environment via animal manure. Similar studies have focused on the occurrence and biological effects of antibiotics in land-applied animal feedlots; however, limited research has been conducted on the occurrence and persistence of antibiotics in animal feedlots. Therefore, the objective of this study was to evaluate antibiotic persistence, fate, and transport in surface water runoff and feedlot sediment in feedlot pens with livestock either receiving or not receiving antibiotic treatments through injection and feed. The two antibiotics (tylosin and monensin) added to animal feed were observed to persist in the soil environment for more than 30 days along with injected florfenicol. Monensin (5.6× higher) and tylosin (20× higher) were significantly higher in livestock pens receiving antibiotics compared to livestock pens not receiving the antibiotics. Further, rainfall was observed to significantly impact soil surface concentrations of florfenicol. Other antibiotics administrated by injection were not observed to statistically increase in concentrations in runoff or feedlot sediment. Our findings emphasize antibiotics administered in feedlots have the potential to persist and remain in feedlot sediment and runoff, particularly in instances of regular administration in feed.
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Affiliation(s)
- Brittany Trejo
- School of Natural Resources, East Campus, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Matthew Russell
- Biosystems and Agricultural Engineering Department, University of Kentucky, Lexington, KY, USA
| | - Shannon Bartelt-Hunt
- Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Nasrin Naderi Beni
- Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Daniel D Snow
- Water Sciences Laboratory & Nebraska Water Center, part of the Daugherty Water for Food Global Institute, Institute of Agriculture and Natural Resources, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Tiffany L Messer
- Biosystems and Agricultural Engineering Department, University of Kentucky, Lexington, KY, USA
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15
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Tang Q, Sui Q, Wei Y, Shen P, Zhang J. Swine-manure composts induce the enrichment of antibiotic-resistant bacteria but not antibiotic resistance genes in soils. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 345:118707. [PMID: 37536132 DOI: 10.1016/j.jenvman.2023.118707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 07/09/2023] [Accepted: 07/26/2023] [Indexed: 08/05/2023]
Abstract
Composting is a common and effective strategy for reducing antibiotic resistance genes (ARGs) and antibiotic-resistant bacteria (ARB) from animal manure. However, it is unclear whether the advantages of composting for the control of ARGs and ARB can be further increased in land application. This study investigated the fate of ARB and ARGs after land application of swine-manure composts (SMCs) to three different soil types (red soil, loess and black soil). The results showed that although the SMCs caused an increase in the abundance of total ARGs in the soil in the short period, they significantly reduced (p < 0.01) the abundance of total ARGs after 82 days compared to the control. The decay rate of ARGs reflected by the half-life times (t1/2) varied by soil type, with red soil being the longest. The SMCs mainly introduced ermF, tetG and tetX into the soils, while these ARGs quickly declined to the control level. Notably, SMCs increased the number of ARB in the soils, especially for cefotaxime-resistant bacteria. Although SMCs only affected the microbiome significantly during the early stage (p < 0.05), it took a much longer time for the microbiome to recover compared to the control. Statistical analysis indicated that changes in the microbial community contributed more to the fate of ARGs during SMCs land application than other factors. Overall, it is proposed that the advantages of ARGs control in the composting process for swine manure can be further increased in land application, but it can still bring some risks in regard to ARB.
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Affiliation(s)
- Qihe Tang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Department of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Life Science and Technology, Guangxi University, Nanning, 530005, China
| | - Qianwen Sui
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Department of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuansong Wei
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Department of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Peihong Shen
- College of Life Science and Technology, Guangxi University, Nanning, 530005, China
| | - Junya Zhang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Department of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
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16
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Zhou Y, Kurade MB, Sirohi R, Zhang Z, Sindhu R, Binod P, Jeon BH, Syed A, Verma M, Awasthi MK. Biochar as functional amendment for antibiotic resistant microbial community survival during hen manure composting. BIORESOURCE TECHNOLOGY 2023; 385:129393. [PMID: 37364648 DOI: 10.1016/j.biortech.2023.129393] [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: 04/10/2023] [Revised: 06/22/2023] [Accepted: 06/23/2023] [Indexed: 06/28/2023]
Abstract
The study aim was to reveal the mechanism of impact of two type biochar on composting of hen manure (HM) and wheat straw (WS). Biochar derived from coconut shell and bamboo used as additives to reduce antibiotic resistant bacteria (ARB) in HM compost. The results manifested that effect of biochar amendment was significant to reduce ARB in HM composting. Compared with control, the microbial activity and abundance were increased in both biochar applied treatment, and bacterial community was changed. Additionally, network analysis revealed that biochar amendment increased the quantity of microorganisms related to organic matter degrading. Among them, coconut shell biochar (CSB) played a pioneering role to mitigate ARB to better exert its effects. Structural correlation analysis showed that CSB reduce ARB mobility and promote organic matter degradation via improving beneficial bacterial community structure. Overall, composting with participation of biochar amendment stimulated antibiotic resistance bacterial dynamics. These results evidence practical value for scientific research and lay the foundation for agricultural promotion of composting.
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Affiliation(s)
- Yuwen Zhou
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Mayur B Kurade
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, South Korea
| | - Ranjna Sirohi
- School of Health Sciences and Technology, University of Petroleum and Energy Studies Dehradun, 248007 Uttarakhand, India
| | - Zengqiang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Raveendran Sindhu
- Department of Food Technology, TKM Institute of Technology, Kollam 691505, Kerala, India
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, Kerala, India
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, South Korea
| | - Asad Syed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia
| | - Meenakshi Verma
- University Centre for Research & Development, Department of Chemistry, Chandigarh University Gharuan, Mohali, India
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China.
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17
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Liu W, Wang Y, Xia R, Ding X, Xu Z, Li G, Nghiem LD, Luo W. Occurrence and fate of antibiotics in swine waste treatment: An industrial case. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023:121945. [PMID: 37268217 DOI: 10.1016/j.envpol.2023.121945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 05/11/2023] [Accepted: 05/30/2023] [Indexed: 06/04/2023]
Abstract
This study mapped the fate of antibiotics in a swine farm with integrated waste treatment including anoxic stabilization, fixed-film anaerobic digestion, anoxic-oxic (A/O), and composting. Results show the prevalent and consistent occurrence of 12 antibiotics in swine waste. Mass balance of these antibiotics was calculated to track their flow and evaluate their removal by different treatment units. The integrated treatment train could effectively reduce antibiotic loading to the environment by 90% (measured as combined mass of all antibiotic residues). Within the treatment train, anoxic stabilization as the initial treatment step, accounted for the highest contribution (43%) to overall antibiotic elimination. Results also show that aerobic was more effective than anaerobic regarding antibiotic degradation. Composting accounted for an additional of 31% removal of antibiotics while anaerobic digestion contributed to 15%. After treatment, antibiotic residues in the treated effluent and composted materials were 2 and 8% of the initial antibiotic loading in raw swine waste, respectively. Ecological risk assessment showed negligible or low risk quotient associated with most individual antibiotics released into the aquatic environment or soil from swine farming. Nevertheless, antibiotic residues in treated water and composted materials together showed significant ecological risk to water and soil organisms. Thus, further work to improve treatment performance or develop new technologies is necessary to reduce the impact of antibiotics from swine farming.
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Affiliation(s)
- Wancen Liu
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Yongfang Wang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Ruohan Xia
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Xiangrui Ding
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Zhicheng Xu
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Key Laboratory of Low-carbon Green Agriculture, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing, 100193, China
| | - Guoxue Li
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Sanya Institute of China Agricultural University, Sanya, 572025, China
| | - Long D Nghiem
- Centre for Technology in Water and Wastewater, University of Technology Sydney, Ultimo, NSW, 2007, Australia
| | - Wenhai Luo
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Key Laboratory of Low-carbon Green Agriculture, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing, 100193, China.
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Evaluation of bacterial diversity in a swine manure composting system contaminated with veterinary antibiotics (VAs). Arch Microbiol 2023; 205:85. [PMID: 36757625 DOI: 10.1007/s00203-022-03382-y] [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: 12/29/2021] [Revised: 11/18/2022] [Accepted: 12/18/2022] [Indexed: 02/10/2023]
Abstract
Composting has become an alternative for the treatment of organic effluents, due to its low cost, easy handling, and a great capacity for treating swine manure. As it is a biological process, many microorganisms are involved during the composting process and act in the degradation of organic matter and nutrients and also have the ability to degrade contaminants and accelerate the transformations during composting. The objective of this work was to identify microorganisms present in the swine effluent composting system, under the contamination by most used veterinary drugs in Brazil. The composting took place for 150 days, there was an addition of 200 L of manure (these 25 L initially contaminated with 17 antibiotics) in 25 kg of eucalyptus wood shavings. The microorganisms were measured at times (0 until 150 days) and were identified by the V3-V4 regions of the 16S rRNA for Bacteria, by means of next-generation sequencing (NSG). The results show seven different bacterial phyla (Proteobacteria, Bacteroidetes, Firmicutes, Acidobacteria, Actinobacteria, Spirochaetota and Tenericutes) and 70 bacterial genera (more than 1% significance), of which the most significant ones were Pseudomonas, Sphingobacterium, Devosia, Brucella, Flavisolibacter, Sphingomonas and Nitratireductor. The genus Brucella was found during mesophilic and thermophilic phases, and this genus has not yet been reported an in article involving composting process. With the results obtained, the potential for adaptation of the bacterial community was observed, being under the influence of antibiotics for veterinary use.
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Zhang T, Ding Y, Peng J, Dai Y, Luo S, Liu W, Ma Y. Effects of Broad-Spectrum Antibiotic (Florfenicol) on Resistance Genes and Bacterial Community Structure of Water and Sediments in an Aquatic Microcosm Model. Antibiotics (Basel) 2022; 11:1299. [PMID: 36289957 PMCID: PMC9598473 DOI: 10.3390/antibiotics11101299] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/19/2022] [Accepted: 09/21/2022] [Indexed: 11/16/2022] Open
Abstract
This study evaluates the effects of a broad-spectrum antibiotic (florfenicol) on antibiotic resistance genes (ARGs) and bacterial community structure in aquatic environments. We constructed an indoor aquatic microcosm model, adding different concentrations of florfenicol (0.1, 1, 10, 100 mg L-1), and water and sediment samples were collected after 0, 7, 30, and 60 days. qPCR and 16S rDNA amplicon sequencing were used to study the changes in the ARGs and bacterial community structure of the collected samples. The results show that the inclusion of florfenicol resulted in an increased abundance of the floR and optrA genes. Adding 100 mg L-1 florfenicol to the water increased the abundance of optrA gene copies with the maximum on the Day 7, and increased the abundance of floR gene copies with the maximum on Day 30. Adding 100 mg L-1 florfenicol to the sediment increased the abundance of floR and optrA genes by one order of magnitude on Day 60. Meanwhile, the average number of operational taxonomic units (OTUs) in the water samples was 257, and the average number of OTUs in sediment samples was 823. The bacterial community diversity and richness in sediments were higher than those in water. The difference between the maximal and minimal values of the Shannon diversity index in the water and sediment samples was 4.36 and 1.95, respectively. The effect of florfenicol on the bacterial community structure in water was much higher than that in sediment. At 30 days, the diversity index and richness index of the florfenicol treatment groups with 1 and 10 mg L-1 concentrations began to increase; at 60 days, the diversity and richness indices of the 100 mg L-1 florfenicol treatment group began to increase. The samples at the same sampling time in the sediments clustered closer together. The results of this study provide a scientific basis for guiding the rational use of florfenicol in aquaculture, maintaining a healthy and stable microecological environment in aquaculture, and provide theoretical data for environmental ecological risk assessment and safety management caused by microbial resistance under the abuse of florfenicol.
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Affiliation(s)
- Tengyue Zhang
- Department of Veterinary Medicine, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China
| | - Yuexia Ding
- Department of Veterinary Medicine, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China
| | - Jinju Peng
- Department of Veterinary Medicine, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China
| | - Yue Dai
- Department of Veterinary Medicine, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China
| | - Shuaishuai Luo
- Department of Veterinary Medicine, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China
| | - Wenchao Liu
- Department of Animal Science, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China
| | - Yi Ma
- Department of Veterinary Medicine, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China
- Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming 525000, China
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