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Liu H, Zhang Z, Li X, Zhou T, Wang Z, Li J, Li Y, Wang Q. Temperature-phased anaerobic sludge digestion effectively removes antibiotic resistance genes in a full-scale wastewater treatment plant. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 924:171555. [PMID: 38485028 DOI: 10.1016/j.scitotenv.2024.171555] [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: 02/01/2024] [Revised: 03/04/2024] [Accepted: 03/04/2024] [Indexed: 03/17/2024]
Abstract
Sludge is a major by-product and the final reservoir of antibiotic resistance genes (ARGs) in wastewater treatment plants (WWTPs). Temperature-phased anaerobic digestion (TPAD), consisting of thermophilic anaerobic digestion (AD) (55 °C) and mesophilic AD processes (37 °C), has been implemented in WWTPs for sludge reduction while improving the biomethane production. However, the impact of TPAD on the ARGs' fate is still undiscovered in lab-scale experiments and full-scale WWTPs. This study, for the first time, investigated the fate of ARGs during the TPAD process across three seasons in a full-size WWTP. Ten typical ARGs and one integrase gene of class 1 integron (intI1) involving ARGs horizontal gene transfer were examined in sludge before and after each step of the TPAD process. TPAD reduced aac(6')-Ib-cr, blaTEM, drfA1, sul1, sul2, ermb, mefA, tetA, tetB and tetX by 87.3-100.0 %. TPAD reduced the overall average absolute abundance of targeted ARGs and intI1 by 92.39 % and 92.50 %, respectively. The abundance of targeted ARGs in sludge was higher in winter than in summer and autumn before and after TPAD. During the TPAD processes, thermophilic AD played a major role in the removal of ARGs, contributing to >60 % removal of ARGs, while the subsequent mesophilic AD contributed to a further 31 % removal of ARGs. The microbial community analysis revealed that thermophilic AD reduced the absolute abundance of ARGs hosts, antibiotic resistant bacteria. In addition, thermophilic AD reduced the abundance of the intI1, while the intI1 did not reproduce during the mesophilic AD, also contributing to a decline in the absolute abundance of ARGs in TPAD. This study demonstrates that TPAD can effectively reduce the abundance of ARGs in sludge, which will suppress the transmission of ARGs from sludge into the natural environment and deliver environmental and health benefits to our society.
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Affiliation(s)
- Huan Liu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Zehao Zhang
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Xuan Li
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Ting Zhou
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Zhenyao Wang
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Jibin Li
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Yi Li
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia
| | - Qilin Wang
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, NSW 2007, Australia.
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Li L, Liu X, Li J, Chen Z, Song T, Jin S, Zhu C, Luo L, Geng B, Zhu J. Mitigating Tetracycline antibiotic contamination in chicken manure using ex situ fermentation system. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 356:120614. [PMID: 38513588 DOI: 10.1016/j.jenvman.2024.120614] [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: 10/27/2023] [Revised: 02/21/2024] [Accepted: 03/10/2024] [Indexed: 03/23/2024]
Abstract
Excessive use of tetracycline antibiotics in poultry farming results in significant concentrations of these drugs and tetracycline resistance genes (TRGs) in chicken manure, impacting both environmental and human health. Our research represents the first investigation into the removal dynamics of chlortetracycline (CTC) and TRGs in different layers of an ex situ fermentation system (EFS) for chicken waste treatment. By pinpointing and analyzing dominant TRGs-harboring bacteria and their interactions with environmental variables, we've closed an existing knowledge gap. Findings revealed that CTC's degradation half-lives spanned 3.3-5.8 days across different EFS layers, and TRG removal efficiency ranged between 86.82% and 99.52%. Network analysis highlighted Proteobacteria and Actinobacteria's essential roles in TRGs elimination, whereas Chloroflexi broadened the potential TRG hosts in the lower layer. Physical and chemical conditions within the EFS influenced microbial community diversity, subsequently impacting TRGs and integrons. Importantly, our study reports that the middle EFS layer exhibited superior performance in eliminating CTC and key TRGs (tetW, tetG, and tetX) as well as intI2. Our work transcends immediate health and environmental remediation by offering insights that encourage sustainable agriculture practices.
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Affiliation(s)
- Luyao Li
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Xue Liu
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Jiabin Li
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Zhuobo Chen
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Tingting Song
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Shan Jin
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Changxiong Zhu
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Liangguo Luo
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Bing Geng
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China.
| | - Jie Zhu
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China.
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Xing M, Zhao R, Yang G, Li Z, Sun Y, Xue Z. Elimination of antibiotic-resistant bacteria and resistance genes by earthworms during vermifiltration treatment of excess sludge. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:7853-7871. [PMID: 38170354 DOI: 10.1007/s11356-023-31287-w] [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: 06/22/2023] [Accepted: 11/24/2023] [Indexed: 01/05/2024]
Abstract
Vermifiltration (VF) and a conventional biofilter (BF, no earthworm) were investigated by metagenomics to evaluate the removal rates of antibiotic-resistant bacteria (ARB), antibiotic resistance genes (ARGs), and class 1 integron-integrase (intI1), as well as the impact mechanism in combination with the microbial community. According to the findings of qPCR and metagenomics, the VF facilitated greater removal rates of ARGs (78.83% ± 17.37%) and ARB (48.23% ± 2.69%) than the BF (56.33% ± 14.93%, 20.21% ± 6.27%). Compared to the control, the higher biological activity of the VF induced an increase of over 60% in the inhibitory effect of earthworm coelomic fluid on ARB. The removal rates of ARGs by earthworm guts also reached over 22%. In addition, earthworms enhanced the decomposition of refractory organics, toxic, and harmful organics, which led to a lower selective pressure on ARGs and ARB. It provides a strategy for reducing resistant pollution in sewage treatment plants and recognizing the harmless stability of sludge.
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Affiliation(s)
- Meiyan Xing
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, No. 1239, Siping Road, Shanghai, 200092, China.
| | - Ran Zhao
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, No. 1239, Siping Road, Shanghai, 200092, China
| | - Gege Yang
- Tongji Architectural Design (Group) Co., Ltd, Shanghai, 200092, China
| | - Zhan Li
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, No. 1239, Siping Road, Shanghai, 200092, China
| | - Yuzhu Sun
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, No. 1239, Siping Road, Shanghai, 200092, China
| | - Zitao Xue
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, No. 1239, Siping Road, Shanghai, 200092, China
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Costa BF, Zarei-Baygi A, Md Iskander S, Smith AL. Antibiotic resistance genes fate during food waste management - Comparison between thermal treatment, hyperthermophilic composting, and anaerobic membrane bioreactor. BIORESOURCE TECHNOLOGY 2023; 388:129771. [PMID: 37739184 DOI: 10.1016/j.biortech.2023.129771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/01/2023] [Accepted: 09/11/2023] [Indexed: 09/24/2023]
Abstract
The fate of eight different antibiotic resistance genes (ARGs) in food waste (sul1, sul2, tetO, tetW, ermF, ermB, ampC, oxa-1), intI1, and rpoB were monitored during thermal treatment (pyrolysis and incineration), hyperthermophilic composting, and anaerobic membrane bioreactor (AnMBR) treatment. ARGs in food waste ranged from 2.9 × 106 to 3.5 × 109 copies/kg with ampC being the least abundant and sul1 being the most abundant. Thermal treatment achieved removal below detection limits of all ARGs. Only two ARGs (sul1 and ampC) persisted in hyperthermophilic composting. While all genes except for ermB decreased in the AnMBR effluent relative to the food waste feed, sul1 remained at relatively high abundance. Biosolids on the contrary, accumulated tetO, ampC and sul2 in all tested operating conditions. Thermal treatment, despite limited resource recovery, provides the most effective mitigation of ARG risk in food waste.
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Affiliation(s)
- Bianca F Costa
- Astani Department of Civil and Environmental Engineering, University of Southern California, 920 Downey Way, Los Angeles, CA 90089, USA
| | - Ali Zarei-Baygi
- Astani Department of Civil and Environmental Engineering, University of Southern California, 920 Downey Way, Los Angeles, CA 90089, USA
| | - Syeed Md Iskander
- Department of Civil, Construction and Environmental Engineering, North Dakota State University, 1410 14(th) Ave N, Fargo, ND 58102, USA
| | - Adam L Smith
- Astani Department of Civil and Environmental Engineering, University of Southern California, 920 Downey Way, Los Angeles, CA 90089, USA.
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Wang J, Xu S, Zhao K, Song G, Zhao S, Liu R. Risk control of antibiotics, antibiotic resistance genes (ARGs) and antibiotic resistant bacteria (ARB) during sewage sludge treatment and disposal: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 877:162772. [PMID: 36933744 DOI: 10.1016/j.scitotenv.2023.162772] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/14/2023] [Accepted: 03/06/2023] [Indexed: 05/06/2023]
Abstract
Sewage sludge is an important reservoir of antibiotics, antibiotic resistance genes (ARGs), and antibiotic resistant bacteria (ARB) in wastewater treatment plants (WWTPs), and the reclamation of sewage sludge potentially threats human health and environmental safety. Sludge treatment and disposal are expected to control these risks, and this review summarizes the fate and controlling efficiency of antibiotics, ARGs, and ARB in sludge involved in different processes, i.e., disintegration, anaerobic digestion, aerobic composting, drying, pyrolysis, constructed wetland, and land application. Additionally, the analysis and characterization methods of antibiotics, ARGs, and ARB in complicate sludge are reviewed, and the quantitative risk assessment approaches involved in land application are comprehensively discussed. This review benefits process optimization of sludge treatment and disposal, with regard to environmental risks control of antibiotics, ARGs, and ARB in sludge. Furthermore, current research limitations and gaps, e.g., the antibiotic resistance risk assessment in sludge-amended soil, are proposed to advance the future studies.
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Affiliation(s)
- Jiaqi Wang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Yangze Eco-Environment Engineering Research Center, China Three Gorges Corporation, Beijing 100038, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Siqi Xu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Kai Zhao
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ge Song
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shunan Zhao
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Ruiping Liu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Liu L, Zou X, Gao Y, Li H, Cheng Y, Zhang X, Yuan Q. Differential dose-response patterns of intracellular and extracellular antibiotic resistance genes under sub-lethal antibiotic exposure. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 260:115070. [PMID: 37257347 DOI: 10.1016/j.ecoenv.2023.115070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 05/21/2023] [Accepted: 05/24/2023] [Indexed: 06/02/2023]
Abstract
Although antibiotics are one of the most significant factors contributing to the propagation of antibiotic resistance genes (ARGs), studies on the dose-response relationship at sub-lethal concentrations of antibiotics remain scarce, despite their importance for assessing the risks of antibiotics in the environment. In this study, we constructed a series of microcosms to investigate the propagation of intracellular (iARGs) and extracellular (eARGs) ARGs in both water and biofilms when exposed to antibiotics at various concentrations (1-100 μg/L) and frequencies. Results showed that eARGs were more abundant than iARGs in water, while iARGs were the dominant ARGs form in biofilms. eARGs showed differentiated dose-response relationships from iARGs. The abundance of iARGs increased with the concentration of antibiotics as enhanced selective pressure overcame the metabolic burden of antibiotic-resistant bacteria carrying ARGs. However, the abundance of eARGs decreased with increasing antibiotic concentrations because less ARGs were secreted from bacterial hosts at higher concentrations (100 μg/L). Furthermore, combined exposure to two antibiotics (tetracycline & imipenem) showed a synergistic effect on the propagation of iARGs, but an antagonistic effect on the propagation of eARGs compared to exposure to a single antibiotic. When exposed to antibiotic at a fixed total dose, one-time dosing (1 time/10 d) favored the propagation of iARGs, while fractional dosing (5 times /10 d) favored the propagation of eARGs. This study sheds light on the propagation of antibiotic resistance in the environment and can help in assessing the risks associated with the use of antibiotics.
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Affiliation(s)
- Lele Liu
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xinyi Zou
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yifan Gao
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Huihui Li
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yuan Cheng
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xueying Zhang
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Qingbin Yuan
- College of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
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Jang HM, Kan E. Enhanced removal of antibiotic resistance genes and human bacterial pathogens during anaerobic digestion of dairy manure via addition of manure biochar. CHEMOSPHERE 2022; 304:135178. [PMID: 35660057 DOI: 10.1016/j.chemosphere.2022.135178] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/27/2022] [Accepted: 05/28/2022] [Indexed: 06/15/2023]
Abstract
In this study, the response of antibiotic resistance genes (ARGs), mobile gene elements (intI1), and human bacterial pathogens (HBPs) to addition of manure biochar (1-10 g/L) was studied in anaerobic digestion (AD) at 20-55 °C for treating dairy manure. Twelve ARGs comprising five tetracycline resistance genes, two sulfonamide resistance genes, two macrolide resistance genes, three β-lactam antibiotic resistance genes, and intI1 were analyzed by quantitative PCR. High-throughput sequencing data were matched against a database of putative 538 HBPs. Significant removal of ARGs (except for tetO and ermB) and intI1 was observed in all the samples. Manure biochar resulted in significant removal of ARGs and HBPs; however, negative effects were also observed in some conditions. This is the first study to provide to explore the fates of ARGs and HBPs by adding manure biochar to AD.
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Affiliation(s)
- Hyun Min Jang
- Department of Environmental and Energy, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, 54896, Republic of Korea; Department of Environmental Engineering, Soil Environment Research Center, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, 54896, Republic of Korea
| | - Eunsung Kan
- Department of Biological and Agricultural Engineering & Texas A&M AgriLife Research Center, Texas A&M University, Stephenville, TX, 76401, USA; Department of Wildlife, Sustainability, and Ecosystem Sciences, Tarleton State University, Stephenville, TX, 76401, USA.
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The Removal of Erythromycin and Its Effects on Anaerobic Fermentation. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19127256. [PMID: 35742505 PMCID: PMC9223550 DOI: 10.3390/ijerph19127256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 06/10/2022] [Accepted: 06/10/2022] [Indexed: 02/01/2023]
Abstract
In view of the problems of antibiotic pollution, anaerobic fermentation technology was adopted to remove erythromycin in this study. The removal of erythromycin and its effects mechanism on anaerobic fermentation were studied, including biogas performance, process stability, substrate degradability, enzyme activity, and microbial communities. The results showed that the removal rates of erythromycin for all tested concentrations were higher than 90% after fermentation. Erythromycin addition inhibited biogas production. The more erythromycin added, the lower the CH4 content obtained. The high concentration of erythromycin (20 and 40 mg/L) resulted in more remarkable variations of pH values than the control group and 1 mg/L erythromycin added during the fermentation process. Erythromycin inhibited the hydrolysis process in the early stage of anaerobic fermentation. The contents of chemical oxygen demand (COD), NH4+–N, and volatile fatty acids (VFA) of erythromycin added groups were lower than those of the control group. Erythromycin inhibited the degradation of lignocellulose in the late stage of fermentation. Cellulase activity increased first and then decreased during the fermentation and addition of erythromycin delayed the peak of cellulase activity. The inhibitory effect of erythromycin on the activity of coenzyme F420 increased with elevated erythromycin concentrations. The relative abundance of archaea in erythromycin added groups was lower than the control group. The decrease in archaea resulted in the delay of the daily biogas peak. Additionally, the degradation rate of erythromycin was significantly correlated with the cumulative biogas yield, COD, pH, and ORP. This study supports the reutilization of antibiotic-contaminated biowaste and provides references for further research.
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Zhang K, Wang T, Chen J, Guo J, Luo H, Chen W, Mo Y, Wei Z, Huang X. The reduction and fate of antibiotic resistance genes (ARGs) and mobile genetic elements (MGEs) in microbial fuel cell (MFC) during treatment of livestock wastewater. JOURNAL OF CONTAMINANT HYDROLOGY 2022; 247:103981. [PMID: 35247696 DOI: 10.1016/j.jconhyd.2022.103981] [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: 08/29/2021] [Revised: 02/22/2022] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
The fate and removal efficiency of antibiotic resistance genes (ARGs) and mobile genetic elements (MGEs) in livestock wastewater by microbial fuel cell (MFC) was evaluated by High-throughput quantitative PCR. The results showed that 137 ARGs and 9 MGEs were detected in untreated livestock wastewater. The ARG number of macrolide-lincosamide-streptogramin group B (MLSB), tetracycline and sulfonamide were relatively higher. Throughout the treatment process, the number and abundance of ARGs and MGEs significantly decreased. The relative abundance of tetracycline, sulfonamide and chloramphenicol resistance genes showed the most obvious decreasing trend, and the relative abundance of MGEs decreased by 75% (from 0.012 copies/16S rRNA copies to 0.003 copies/16S rRNA copies). However, the absolute abundance of beta-lactamase resistance genes slightly increased. The operation process of MFC produces selective pressure on microorganisms, and Actinobacteria were predominant and had the ability to decompose antibiotics. The COD removal rate and TN removal rate of livestock wastewater were 67.81% and 62.09%, and the maximum power density and coulomb efficiency (CE) reached 11.49% and 38.40% respectively. This study demonstrated that although the removal of COD and TN by MFC was limited, MFC was quite effective in reducing the risk of antibiotic toxicity and horizontal gene transfer.
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Affiliation(s)
- Ke Zhang
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, PR China; School of Environment, Harbin Institute of Technology, Harbin 150090, Heilongjiang, PR China
| | - Tingting Wang
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, PR China
| | - Jia Chen
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, PR China.
| | - Jingyue Guo
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, PR China
| | - Hongbing Luo
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, PR China
| | - Wei Chen
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, PR China
| | - You Mo
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, PR China
| | - Zhaolan Wei
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, PR China
| | - Xiuzhong Huang
- College of Civil Engineering, Sichuan Agricultural University, Dujiangyan 611830, PR China
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Xu L, Gu J, Wang X, Song Z, Jiang H, Li N, Lei L, Xie J, Hu T, Ding Q, Sun Y. Risk of horizontal transfer of intracellular, extracellular, and bacteriophage antibiotic resistance genes during anaerobic digestion of cow manure. BIORESOURCE TECHNOLOGY 2022; 351:127007. [PMID: 35304254 DOI: 10.1016/j.biortech.2022.127007] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 03/11/2022] [Accepted: 03/12/2022] [Indexed: 06/14/2023]
Abstract
The fate of intracellular antibiotic resistance genes (iARGs), extracellular ARGs (eARGs) and bacteriophage ARGs (bARGs) during anaerobic digestion (AD) of cow manure is unclear. Thus, the characteristics of iARGs, eARGs and bARGs during mesophilic AD (MAD) and thermophilic AD (TAD) of cow manure were investigated. The absolute abundances of iARGs decreased by 69.82% after TAD. After MAD and TAD, the total absolute abundances of eARGs increased by 63.5 times and 67.6 times, respectively, whereas those of the bARGs increased by 47.60% and 59.22%. eARGs were mainly derived from the non-specific lysis of Firmicutes, Bacteroidetes, while bacteriophages had a wide range of hosts. The variations in iARGs, eARGs and bARGs were affected by the microbial hosts but also directly driven by physicochemical factors (e.g., pH). Overall, the findings of this study revealed that there may be a risk of eARGs and bARGs disseminating during the AD of cow manure.
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Affiliation(s)
- Liang Xu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jie Gu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Shaanxi Engineering Research Center of Utilization of Agricultural Waste Resources, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Xiaojuan Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Shaanxi Engineering Research Center of Utilization of Agricultural Waste Resources, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zilin Song
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Shaanxi Engineering Research Center of Utilization of Agricultural Waste Resources, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Haihong Jiang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Nana Li
- School of Geography and Tourism, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Liusheng Lei
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jun Xie
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ting Hu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qingling Ding
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yifan Sun
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
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11
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Lagoon, Anaerobic Digestion, and Composting of Animal Manure Treatments Impact on Tetracycline Resistance Genes. Antibiotics (Basel) 2022; 11:antibiotics11030391. [PMID: 35326854 PMCID: PMC8944653 DOI: 10.3390/antibiotics11030391] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/11/2022] [Accepted: 03/13/2022] [Indexed: 02/04/2023] Open
Abstract
Increased demand for animal protein is met by increased food animal production resulting in large quantities of manure. Animal producers, therefore, need sustainable agricultural practices to protect environmental health. Large quantities of antimicrobials are used in commercial food animal production. Consequently, antimicrobial-resistant bacteria and the resistance genes emerge and are excreted through feces. Manure management is essential for the safe disposal of animal waste. Lagoons, with or without covers, and anaerobic digesters, with the primary purpose of methane production, and composting, with the primary purpose of producing organic fertilizer, are widely used methods of manure treatment. We reviewed manure management practices and their impact on tetracycline resistance genes. Lagoons are maintained at ambient temperatures; especially uncovered lagoons are the least effective in removing tetracycline resistance genes. However, some modifications can improve the performance of lagoons: sequential use of uncovered lagoons and the use of covered lagoons resulted in a one-log reduction, while post-treatments such as biofiltration following covered lagoon treatment resulted in 3.4 log reduction. Mesophilic digestion of animal manure did not have any significant effect; only a 0.7 log reduction in tet(A) was observed in one study. While thermophilic anaerobic digesters are effective, if properly operated, they are expensive for animal producers. Aerobic thermophilic composting is a promising technology if optimized with its economic benefits. Composting of raw animal manure can result in up to a 2.5 log reduction, and postdigestion composting can reduce tetracycline resistance gene concentration by >80%. In general, manure management was not designed to mitigate antimicrobial resistance; future research is needed to optimize the economic benefits of biogas or organic fertilizer on the one hand and for the mitigation of foodborne pathogens and antimicrobial resistance on the other.
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Wang J, Li M, Guan A, Liu R, Qi W, Liu H, Qu J. Can radicals-orientated chemical oxidation improve the reduction of antibiotic resistance genes (ARGs) by mesophilic anaerobic digestion of sludge? JOURNAL OF HAZARDOUS MATERIALS 2022; 426:128001. [PMID: 34933261 DOI: 10.1016/j.jhazmat.2021.128001] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 11/19/2021] [Accepted: 12/04/2021] [Indexed: 06/14/2023]
Abstract
The dissemination of antibiotic resistance genes (ARGs) increases risks towards human health and environmental safety. This work investigates the control of ARGs abundance and bacterial community evolution involved in waste activated sludge (WAS) treatment by chemical conditioning and subsequent mesophilic anaerobic digestion (MAD). The different chemical oxidation processes of ferrous iron-activated oxone and hydrogen peroxide (PMS-Fe2+ and H2O2-Fe2+) and thermal-activated oxone (PMS@80 ℃) were investigated, and the ferric chloride (FeCl3) and inactivated oxone (PMS) were compared. PMS@80 ℃ decreased the absolute abundance of most ARGs by 10.6-99.3% and that of total ARGs by 66.3%. Interestingly, oxidation pretreatment increased rather than decreased the relative abundance of most ARGs. MAD with PMS@80 ℃ pretreatment increased the absolute abundance of total ARGs by 51.6%, and other MAD processes decreased it by 8.6-47.4%. PMS-Fe2+ and PMS@80 ℃ negatively inhibited methane production from 98.3 to 81.7 and 94.4 mL/g VSS in MAD. MAD effluent showed high abundance of Arcobacter genus in the range of 8.1-17.4% upon PMS-based pretreatment, possibly related to sulfur oxidation, nitrate reduction, and blaVEB enrichment. The radicals-orientated chemical oxidation can hardly improve the ARGs elimination by MAD due to the extremely high competitive organics in sludge.
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Affiliation(s)
- Jiaqi Wang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mengtian Li
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Aomei Guan
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruiping Liu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Weixiao Qi
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
| | - Huijuan Liu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jiuhui Qu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
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Weng ZF, He YQ, Li GX, Wu XT, Dai Y, Bao P. Investigation of Antibiotic-Resistant Bacterial Communities and Antibiotic-Resistant Genes in Wastewater Treatment Plants: Removal of Antibiotic-Resistant Genes by the BBR Process. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 108:284-291. [PMID: 34532751 DOI: 10.1007/s00128-021-03363-9] [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: 04/13/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
The antibiotic-resistant bacteria (ARB) and antibiotic-resistant genes (ARGs) in Wastewater treatment plants (WWTPs) have attracted increasing attention. In this study, the abundance of ARB and resistance genes tet32 and defA1 were investigated using high-throughput sequencing and high-throughput qPCR in water samples collected from the inlet of the biological treatment pool and outlet of Beilun Yandong WWTP in Ningbo, China. The result shows there was a high level of ARGs in the water of both the inlets and outlets in 2017 and 2018, whereas no ARGs were detected after adding a new baffled bioreactor (BBR) water treatment process in 2019. The BBR process uses Bacillus subtilis, B. thuringiensis, B. megaterium, B. licheniformis and B. amyloliquefaciens to effectively eliminate the ARGs in wastewater. Notably, this process did not significantly change the bacterial community structure of outlet water samples. The findings demonstrate an effective new method for removing ARGs from sewage.
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Affiliation(s)
- Zi-Fan Weng
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, No 1799 Jimei Road, Xiamen, 361021, People's Republic of China
- Ningbo Urban Environment Observation and Station, Chinese Academy of Sciences, Ningbo, 315800, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
- Henan University, Kaifeng, 475004, People's Republic of China
| | - Yu-Qin He
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, No 1799 Jimei Road, Xiamen, 361021, People's Republic of China
- Ningbo Urban Environment Observation and Station, Chinese Academy of Sciences, Ningbo, 315800, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Guo-Xiang Li
- Center for Applied Geosciences (ZAG), Eberhard Karls University Tuebingen, Sigwartstrasse 10, 72076, Tuebingen, Germany
| | - Xiao-Tong Wu
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, No 1799 Jimei Road, Xiamen, 361021, People's Republic of China
- Ningbo Urban Environment Observation and Station, Chinese Academy of Sciences, Ningbo, 315800, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Yi Dai
- Ningbo Beilun Water Affairs Limited, Ningbo, 315800, People's Republic of China
| | - Peng Bao
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, No 1799 Jimei Road, Xiamen, 361021, People's Republic of China.
- Ningbo Urban Environment Observation and Station, Chinese Academy of Sciences, Ningbo, 315800, People's Republic of China.
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14
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Effects of Chinese medicine herbal residues on antibiotic resistance genes and the bacterial community in chicken manure composting. J Antibiot (Tokyo) 2022; 75:164-171. [DOI: 10.1038/s41429-022-00505-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 10/05/2021] [Accepted: 01/06/2022] [Indexed: 01/18/2023]
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15
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Wang Y, Pandey PK, Kuppu S, Pereira R, Aly S, Zhang R. Degradation of antibiotic resistance genes and mobile gene elements in dairy manure anerobic digestion. PLoS One 2021; 16:e0254836. [PMID: 34432793 PMCID: PMC8386849 DOI: 10.1371/journal.pone.0254836] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 07/03/2021] [Indexed: 11/19/2022] Open
Abstract
Antibiotic resistance genes (ARGs) are emerging contaminants causing serious global health concern. Interventions to address this concern include improving our understanding of methods for treating waste material of human and animal origin that are known to harbor ARGs. Anaerobic digestion is a commonly used process for treating dairy manure, and although effective in reducing ARGs, its mechanism of action is not clear. In this study, we used three ARGs to conducted a longitudinal bench scale anaerobic digestion experiment with various temperatures (28, 36, 44, and 52°C) in triplicate using fresh dairy manure for 30 days to evaluate the reduction of gene abundance. Three ARGs and two mobile genetic elements (MGEs) were studied: sulfonamide resistance gene (sulII), tetracycline resistance genes (tetW), macrolide-lincosamide-streptogramin B (MLSB) superfamily resistance genes (ermF), class 1 integrase gene (intI1), and transposase gene (tnpA). Genes were quantified by real-time quantitative PCR. Results show that the thermophilic anaerobic digestion (52°C) significantly reduced (p < 0.05) the absolute abundance of sulII (95%), intI1 (95%), tnpA (77%) and 16S rRNA gene (76%) after 30 days of digestion. A modified Collins–Selleck model was used to fit the decay curve, and results suggest that the gene reduction during the startup phase of anaerobic digestion (first 5 days) was faster than the later stage, and reductions in the first five days were more than 50% for most genes.
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Affiliation(s)
- Yi Wang
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California-Davis, Davis, California, United States of America
- Department of Biological and Agricultural Engineering, University of California-Davis, Davis, California, United States of America
| | - Pramod K. Pandey
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California-Davis, Davis, California, United States of America
- * E-mail:
| | - Sundaram Kuppu
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California-Davis, Davis, California, United States of America
| | - Richard Pereira
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California-Davis, Davis, California, United States of America
| | - Sharif Aly
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California-Davis, Davis, California, United States of America
| | - Ruihong Zhang
- Department of Biological and Agricultural Engineering, University of California-Davis, Davis, California, United States of America
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16
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Antibiotic Resistance in Wastewater and Its Impact on a Receiving River: A Case Study of WWTP Brno-Modřice, Czech Republic. WATER 2021. [DOI: 10.3390/w13162309] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Antibiotic resistance has become a global threat in which the anthropogenically influenced aquatic environment represents not only a reservoir for the spread of antibiotic resistant bacteria (ARB) among humans and animals but also an environment where resistance genes are introduced into natural microbial ecosystems. Wastewater is one of the sources of antibiotic resistance. The aim of this research was the evaluation of wastewater impact on the spread of antibiotic resistance in the water environment. In this study, qPCR was used to detect antibiotic resistance genes (ARGs)—blaCTX-M-15, blaCTX-M-32, ampC, blaTEM, sul1, tetM and mcr-1 and an integron detection primer (intl1). Detection of antibiotic resistant Escherichia coli was used as a complement to the observed qPCR results. Our results show that the process of wastewater treatment significantly reduces the abundances of ARGs and ARB. Nevertheless, treated wastewater affects the ARGs and ARB number in the receiving river.
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17
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Nguyen AQ, Vu HP, Nguyen LN, Wang Q, Djordjevic SP, Donner E, Yin H, Nghiem LD. Monitoring antibiotic resistance genes in wastewater treatment: Current strategies and future challenges. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 783:146964. [PMID: 33866168 DOI: 10.1016/j.scitotenv.2021.146964] [Citation(s) in RCA: 97] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 04/01/2021] [Accepted: 04/01/2021] [Indexed: 05/29/2023]
Abstract
Antimicrobial resistance (AMR) is a growing threat to human and animal health. Progress in molecular biology has revealed new and significant challenges for AMR mitigation given the immense diversity of antibiotic resistance genes (ARGs), the complexity of ARG transfer, and the broad range of omnipresent factors contributing to AMR. Municipal, hospital and abattoir wastewater are collected and treated in wastewater treatment plants (WWTPs), where the presence of diverse selection pressures together with a highly concentrated consortium of pathogenic/commensal microbes create favourable conditions for the transfer of ARGs and proliferation of antibiotic resistant bacteria (ARB). The rapid emergence of antibiotic resistant pathogens of clinical and veterinary significance over the past 80 years has re-defined the role of WWTPs as a focal point in the fight against AMR. By reviewing the occurrence of ARGs in wastewater and sludge and the current technologies used to quantify ARGs and identify ARB, this paper provides a research roadmap to address existing challenges in AMR control via wastewater treatment. Wastewater treatment is a double-edged sword that can act as either a pathway for AMR spread or as a barrier to reduce the environmental release of anthropogenic AMR. State of the art ARB identification technologies, such as metagenomic sequencing and fluorescence-activated cell sorting, have enriched ARG/ARB databases, unveiled keystone species in AMR networks, and improved the resolution of AMR dissemination models. Data and information provided in this review highlight significant knowledge gaps. These include inconsistencies in ARG reporting units, lack of ARG/ARB monitoring surrogates, lack of a standardised protocol for determining ARG removal via wastewater treatments, and the inability to support appropriate risk assessment. This is due to a lack of standard monitoring targets and agreed threshold values, and paucity of information on the ARG-pathogen host relationship and risk management. These research gaps need to be addressed and research findings need to be transformed into practical guidance for WWTP operators to enable effective progress towards mitigating the evolution and spread of AMR.
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Affiliation(s)
- Anh Q Nguyen
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Hang P Vu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Luong N Nguyen
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Qilin Wang
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Steven P Djordjevic
- Institute of Infection, Immunity and Innovation, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Erica Donner
- Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Huabing Yin
- School of Engineering, University of Glasgow, Glasgow G12 8LT, UK
| | - Long D Nghiem
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia; Institute of Environmental Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam.
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18
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Syafiuddin A, Boopathy R. Role of anaerobic sludge digestion in handling antibiotic resistant bacteria and antibiotic resistance genes - A review. BIORESOURCE TECHNOLOGY 2021; 330:124970. [PMID: 33735726 DOI: 10.1016/j.biortech.2021.124970] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/05/2021] [Accepted: 03/08/2021] [Indexed: 06/12/2023]
Abstract
Currently, anaerobic sludge digestion (ASD) is considered not only for treating residual sewage sludge and energy recovery but also for the reduction of antibiotic resistance genes (ARGs). The current review highlights the reasons why antibiotic resistant bacteria (ARB) and ARGs exist in ASD and how ASD performs in the reduction of ARB and ARGs. ARGs and ARB have been detected in ASD with some reports indicating some of the ARGs can be completely removed during the ASD process, while other studies reported the enrichment of ARB and ARGs after ASD. This paper reviews the performance of ASD based on operational parameters as well as environmental chemistry. More studies are needed to improve the performance of ASD in reducing ARGs that are difficult to handle and also differentiate between extracellular (eARGs) and intracellular ARGs (iARGs) to achieve more accurate quantification of the ARGs.
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Affiliation(s)
- Achmad Syafiuddin
- Department of Public Health, Universitas Nahdlatul Ulama Surabaya, 60237 Surabaya, East Java, Indonesia
| | - Raj Boopathy
- Department of Biological Sciences, Nicholls State University, Thibodaux, LA 70310, USA.
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19
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Wang S, Hu Y, Hu Z, Wu W, Wang Z, Jiang Y, Zhan X. Improved reduction of antibiotic resistance genes and mobile genetic elements from biowastes in dry anaerobic co-digestion. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 126:152-162. [PMID: 33770614 DOI: 10.1016/j.wasman.2021.03.011] [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: 11/18/2020] [Revised: 02/07/2021] [Accepted: 03/08/2021] [Indexed: 06/12/2023]
Abstract
This study investigated the performance of anaerobic co-digestion (AcoD) of pig manure and food waste on the reduction of antibiotic resistomes under wet and dry AcoD conditions. High-throughput quantitative PCR technology was utilized for a comprehensive assessment of the performances of the two processes. The results show that dry AcoD with a total solids (TS) content of 20% effectively reduced total antibiotic resistance genes (ARGs) by 1.24 log copies/g wet sample, while only 0.54 log copies/g wet sample was reduced in wet AcoD with a TS content of 5%. Dry AcoD was more efficient in reduction of aminoglycosides, multidrug and sulfonamide resistance genes compared with the reduction of other classes of ARGs. Dry AcoD caused a significant reduction of ARGs with resistance mechanisms of efflux pump and antibiotic deactivation. In contrast, there was no obvious difference in reductions of ARGs with different resistance mechanisms in wet AcoD. Network analysis showed that ARGs were significantly correlated with mobile genetic elements (MGEs) (Spearman's r > 0.8, P < 0.05), as well as microbial communities. Enrichment of ARGs and MGEs was found at the early period of AcoD processes, indicating some ARGs and MGEs increased during the hydrolysis and acidogenesis stages. But after a long retention time, their abundances were effectively reduced by dry AcoD in the subsequent stages.
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Affiliation(s)
- Shun Wang
- Civil Engineering, College of Science and Engineering, National University of Ireland Galway, Ireland; Ryan Institute, National University of Ireland Galway, Ireland; MaREI, The SFI Research Centre for Energy, Climate and Marine, Ireland
| | - Yuansheng Hu
- Civil Engineering, College of Science and Engineering, National University of Ireland Galway, Ireland; Ryan Institute, National University of Ireland Galway, Ireland
| | - Zhenhu Hu
- School of Civil Engineering, Hefei University of Technology, Hefei 230009, Anhui Province, China
| | - Weixiang Wu
- Institute of Environmental Science and Technology, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Zhongzhong Wang
- Civil Engineering, College of Science and Engineering, National University of Ireland Galway, Ireland; Ryan Institute, National University of Ireland Galway, Ireland; MaREI, The SFI Research Centre for Energy, Climate and Marine, Ireland
| | - Yan Jiang
- Civil Engineering, College of Science and Engineering, National University of Ireland Galway, Ireland; Ryan Institute, National University of Ireland Galway, Ireland; MaREI, The SFI Research Centre for Energy, Climate and Marine, Ireland
| | - Xinmin Zhan
- Civil Engineering, College of Science and Engineering, National University of Ireland Galway, Ireland; Ryan Institute, National University of Ireland Galway, Ireland; MaREI, The SFI Research Centre for Energy, Climate and Marine, Ireland.
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20
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Xu Y, Yang S, You G, Hou J. Antibiotic resistance genes attenuation in anaerobic microorganisms during iron uptake from zero valent iron: An iron-dependent form of homeostasis and roles as regulators. WATER RESEARCH 2021; 195:116979. [PMID: 33690012 DOI: 10.1016/j.watres.2021.116979] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 02/17/2021] [Accepted: 02/24/2021] [Indexed: 06/12/2023]
Abstract
Zero valent iron (ZVI) has been previously documented to attenuate the propagation of antibiotic resistance genes (ARGs) in microbes, while how ZVI affects the evolution of ARGs remains unclear. Herein, we investigated the influences of ZVI on ARGs dissemination in anaerobic bioreactor treating oxytetracycline (tet) containing wastewater, by deciphering the roles of iron homeostasis and regulatory effects. A net reduction of tet gene targets ranging from 0.75 to 1.88 and 0.67 to 2.08 log unit in intracellular and extracellular DNA was achieved at the optimal dosage of 5 g/L ZVI, whereas 20 g/L ZVI made no effects on ARGs reduction. The reduced ARGs abundance by ZVI was directly related to the inhibited horizontal transfer of ARGs and decreased proliferation of resistant strains (mainly Paludibacter and WCHB1-32). The potential mechanisms included the increased antioxidant capacity, the depressed efflux pump system and the weakened energy driving force by Fur regulon in microbes (especially for Cloacibacterium and Dechloromonas). The negligible influence of 20 g/L ZVI on ARGs reduction was ascribed to the iron-catalyzed oxidative damage and reduced physiological activity. This study firstly illustrated the potential relationships among activation of iron uptake regulator leading to protection against oxidative stress, alternation of physiological metabolisms and reduction of ARGs dissemination. This work extents our understanding about the priority of ZVI in mitigating ARGs proliferation and sheds light on its potential application in wastewater treatment plants.
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Affiliation(s)
- Yi Xu
- College of Agricultural Engineering, Hohai University, Nanjing, 210098, PR China; Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, 1 Xikang Road, Nanjing 210098, PR China
| | - Shihong Yang
- College of Agricultural Engineering, Hohai University, Nanjing, 210098, PR China
| | - Guoxiang You
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, 1 Xikang Road, Nanjing 210098, PR China
| | - Jun Hou
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, 1 Xikang Road, Nanjing 210098, PR China.
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Mitchell S, Bull M, Muscatello G, Chapman B, Coleman NV. The equine hindgut as a reservoir of mobile genetic elements and antimicrobial resistance genes. Crit Rev Microbiol 2021; 47:543-561. [PMID: 33899656 DOI: 10.1080/1040841x.2021.1907301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Antibiotic resistance in bacterial pathogens is a growing problem for both human and veterinary medicine. Mobile genetic elements (MGEs) such as plasmids, transposons, and integrons enable the spread of antibiotic resistance genes (ARGs) among bacteria, and the overuse of antibiotics drives this process by providing the selection pressure for resistance genes to establish and persist in bacterial populations. Because bacteria, MGEs, and resistance genes can readily spread between different ecological compartments (e.g. soil, plants, animals, humans, wastewater), a "One Health" approach is needed to combat this problem. The equine hindgut is an understudied but potentially significant reservoir of ARGs and MGEs, since horses have close contact with humans, their manure is used in agriculture, they have a dense microbiome of both bacteria and fungi, and many antimicrobials used for equine treatment are also used in human medicine. Here, we collate information to date about resistance genes, plasmids, and class 1 integrons from equine-derived bacteria, we discuss why the equine hindgut deserves increased attention as a potential reservoir of ARGs, and we suggest ways to minimize the selection for ARGs in horses, in order to prevent their spread to the wider community.
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Affiliation(s)
- Scott Mitchell
- School of Life and Environmental Sciences, University of Sydney, Sydney, Australia
| | | | - Gary Muscatello
- School of Life and Environmental Sciences, University of Sydney, Sydney, Australia
| | | | - Nicholas V Coleman
- School of Life and Environmental Sciences, University of Sydney, Sydney, Australia
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22
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Law A, Solano O, Brown CJ, Hunter SS, Fagnan M, Top EM, Stalder T. Biosolids as a Source of Antibiotic Resistance Plasmids for Commensal and Pathogenic Bacteria. Front Microbiol 2021; 12:606409. [PMID: 33967971 PMCID: PMC8098119 DOI: 10.3389/fmicb.2021.606409] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 03/09/2021] [Indexed: 12/05/2022] Open
Abstract
Antibiotic resistance (AR) is a threat to modern medicine, and plasmids are driving the global spread of AR by horizontal gene transfer across microbiomes and environments. Determining the mobile resistome responsible for this spread of AR among environments is essential in our efforts to attenuate the current crisis. Biosolids are a wastewater treatment plant (WWTP) byproduct used globally as fertilizer in agriculture. Here, we investigated the mobile resistome of biosolids that are used as fertilizer. This was done by capturing resistance plasmids that can transfer to human pathogens and commensal bacteria. We used a higher-throughput version of the exogenous plasmid isolation approach by mixing several ESKAPE pathogens and a commensal Escherichia coli with biosolids and screening for newly acquired resistance to about 10 antibiotics in these strains. Six unique resistance plasmids transferred to Salmonella typhimurium, Klebsiella aerogenes, and E. coli. All the plasmids were self-transferable and carried 3-6 antibiotic resistance genes (ARG) conferring resistance to 2-4 antibiotic classes. These plasmids-borne resistance genes were further embedded in genetic elements promoting intracellular recombination (i.e., transposons or class 1 integrons). The plasmids belonged to the broad-host-range plasmid (BHR) groups IncP-1 or PromA. Several of them were persistent in their new hosts when grown in the absence of antibiotics, suggesting that the newly acquired drug resistance traits would be sustained over time. This study highlights the role of BHRs in the spread of ARG between environmental bacteria and human pathogens and commensals, where they may persist. The work further emphasizes biosolids as potential vehicles of highly mobile plasmid-borne antibiotic resistance genes.
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Affiliation(s)
- Aaron Law
- Department of Biological Sciences, University of Idaho, Moscow, ID, United States
| | - Olubunmi Solano
- Department of Biological Sciences, University of Idaho, Moscow, ID, United States
- Department of Biological Sciences, Columbia University, New York, NY, United States
| | - Celeste J. Brown
- Department of Biological Sciences, University of Idaho, Moscow, ID, United States
- Institute for Bioinformatics and Evolutionary Studies, University of Idaho, Moscow, ID, United States
| | - Samuel S. Hunter
- Institute for Bioinformatics and Evolutionary Studies, University of Idaho, Moscow, ID, United States
- UC-Davis Genome Center, Davis, CA, United States
| | - Matt Fagnan
- Institute for Bioinformatics and Evolutionary Studies, University of Idaho, Moscow, ID, United States
| | - Eva M. Top
- Department of Biological Sciences, University of Idaho, Moscow, ID, United States
- Institute for Bioinformatics and Evolutionary Studies, University of Idaho, Moscow, ID, United States
| | - Thibault Stalder
- Department of Biological Sciences, University of Idaho, Moscow, ID, United States
- Institute for Bioinformatics and Evolutionary Studies, University of Idaho, Moscow, ID, United States
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Hall MC, Duerschner J, Gilley JE, Schmidt AM, Bartelt-Hunt SL, Snow DD, Eskridge KM, Li X. Antibiotic resistance genes in swine manure slurry as affected by pit additives and facility disinfectants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 761:143287. [PMID: 33168251 DOI: 10.1016/j.scitotenv.2020.143287] [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: 07/18/2020] [Revised: 10/19/2020] [Accepted: 10/20/2020] [Indexed: 06/11/2023]
Abstract
Manure storage facilities are critical control points to reduce antibiotic resistance genes (ARGs) in swine manure slurry before the slurry is land applied. However, little is known about how exogenous chemicals entering the manure storage facilities may affect the fate of ARGs. The objective of this study was to analyze the impact of six commonly used pit additives and four facility disinfectants on the concentration of ARGs in swine manure slurry. Bench scale reactors, each containing approximately 50 L of liquid swine manure, were dosed with additives or disinfectants and were sampled for 40 days. Seven antibiotic resistance genes along with the intI1 gene and the 16S rRNA gene were monitored. Out of the six additives tested, Sludge Away significantly reduced the time-averaged absolute abundance of erm(C), erm(F), tet(Q), and the 16S rRNA gene as compared to the no additive control. Out of the four disinfectants tested, Tek-Trol significantly reduced the time-averaged absolute abundance of erm(B), erm(C), erm(F), intI1, tet(Q), and tet(X) than did the no-disinfectant control. According to Spearman's rank correlation, three genes erm(F), tet(Q), and tet(X) showed a strong to perfectly positive correlation and the two genes erm(B) and tet(O) showed a moderate to strong correlation in both the additive and disinfectant tests. Overall, the disinfectants were more effective in controlling the absolute abundance of ARGs than were the pit additives.
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Affiliation(s)
- Maria C Hall
- Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, United States
| | - Jon Duerschner
- Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, United States
| | | | - Amy M Schmidt
- Department of Biological Systems Engineering, University of Nebraska-Lincoln, Lincoln, NE 68583, United States
| | - Shannon L Bartelt-Hunt
- Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, United States
| | - Daniel D Snow
- School of Natural Resources, Water Sciences Laboratory, University of Nebraska-Lincoln, Lincoln, NE 68583, United States
| | - Kent M Eskridge
- Department of Statistics, University of Nebraska-Lincoln, Lincoln, NE 68583, United States
| | - Xu Li
- Department of Civil and Environmental Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, United States.
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24
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Shi Z, Zhao R, Wan J, Li B, Shen Y, Zhang S, Luo G. Metagenomic analysis reveals the fate of antibiotic resistance genes in two-stage and one-stage anaerobic digestion of waste activated sludge. JOURNAL OF HAZARDOUS MATERIALS 2021; 406:124595. [PMID: 33302189 DOI: 10.1016/j.jhazmat.2020.124595] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/20/2020] [Accepted: 11/13/2020] [Indexed: 06/12/2023]
Abstract
Waste activated sludge (WAS) from wastewater treatment plants is an important reservoir of antibiotic resistance genes (ARGs). The fate of ARGs in this process was not revealed previously. The present study applied metagenomic approach to examine the occurrence and fate of ARGs in thermophilic alkaline fermentation followed by mesophilic anaerobic digestion (TM), by comparison with mesophilic alkaline fermentation followed by mesophilic anaerobic digestion (MM) and one-stage mesophilic anaerobic digestion (M) process. The removal efficiency of two-stage anaerobic digestion (AD) to total ARGs is higher than that of one-stage AD. The hydrogen and methane production stages of two-stage AD processes have dissimilar impact on the fate of ARGs. Macrolide, lincosamide, and streptogramin (MLS) resistance genes were enriched, especially in the hydrogen production reactors of TM and MM processes. Statistical analysis of metagenomic profiles analysis suggested that bacA may be the differential ARG subtype of two-stage AD process. ARG-like sequences encoding antibiotic efflux pump, antibiotic inactivation and antibiotic target alteration mechanisms were identified as the dominant ARGs resistance mechanisms in all samples. Procrustes analysis showed that microbial community composition structured the resistome. Co-occurrence patterns between ARGs and microbial phylogeny revealed that 26 bacterial species might be potential hosts of 94 ARG subtypes.
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Affiliation(s)
- Zhijian Shi
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Renxin Zhao
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Jingjing Wan
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Bing Li
- Shenzhen Engineering Research Laboratory for Sludge and Food Waste Treatment and Resource Recovery, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China.
| | - Yan Shen
- Huzhou Mizuda Environmental Protection Industry Research Co., Ltd, Huzhou 313000, China
| | - Shicheng Zhang
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Gang Luo
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
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25
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Pallares-Vega R, Hernandez Leal L, Fletcher BN, Vias-Torres E, van Loosdrecht MCM, Weissbrodt DG, Schmitt H. Annual dynamics of antimicrobials and resistance determinants in flocculent and aerobic granular sludge treatment systems. WATER RESEARCH 2021; 190:116752. [PMID: 33385875 DOI: 10.1016/j.watres.2020.116752] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 12/13/2020] [Accepted: 12/14/2020] [Indexed: 05/14/2023]
Abstract
The occurrence and removal patterns of 24 antimicrobial agents and antimicrobial resistant determinants namely 6 antibiotic resistance genes (ARGs) and 2 mobile genetic elements (MGEs), and the fecal indicator E. coli were investigated in three full-scale wastewater treatment plants. Their waterlines and biosolids lines (including secondary treatment based on both granular and activated sludge) were sampled monthly throughout one year. Samples were analyzed by means of LC-MS/MS, qPCR and cell enumeration, respectively. The influence of rainfall, temperature, and turbidity on the occurrence and removal of the aforementioned agents was assessed through statistical linear mixed models. Ten of the antimicrobial agents (macrolides, fluoroquinolones, tetracyclines, and sulfonamides) were commonly found in influent in concentrations of 0.1-2 µg L-1, and the predominant ARGs were ermB and sul1 (6.4 and 5.9 log10 mL-1 respectively). Warmer temperatures slightly reduced gene concentrations in influent whilst increasing that of E. coli and produced an uneven effect on the antimicrobial concentrations across plants. Rainfall diluted both E. coli (-0.25 logs, p < 0.001) and antimicrobials but not genes. The wastewater treatment reduced the absolute abundance of both genes (1.86 logs on average) and E. coli (2.31 logs on average). The antimicrobials agents were also partly removed, but 8 of them were still detectable after treatment, and 6 accumulated in the biosolids. ARGs were also found in biosolids with patterns resembling those of influent. No significant differences in the removal of antimicrobials, genes and E. coli were observed when comparing conventional activated sludge with aerobic granular sludge. Irrespective of the type of sludge treatment, the removal of genes was significantly reduced with increasing hydraulic loads caused by rainfall (-0.35 logs per ∆ average daily flow p < 0.01), and slightly decreased with increasing turbidity (-0.02 logs per ∆1 nephelometric turbidy unit p < 0.05) .
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Affiliation(s)
- Rebeca Pallares-Vega
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, Netherlands; Department of Biotechnology, Delft University of Technology, Delft, Netherlands
| | - Lucia Hernandez Leal
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, Netherlands
| | - Benjamin N Fletcher
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, Netherlands; Bournemouth University, Bournemouth, UK
| | - Eduardo Vias-Torres
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, Netherlands
| | | | - David G Weissbrodt
- Department of Biotechnology, Delft University of Technology, Delft, Netherlands
| | - Heike Schmitt
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, Netherlands; Institute for Risk Assessment Sciences, Utrecht University, Utrecht, Netherlands; RIVM, Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, Netherlands.
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26
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Agga GE, Kasumba J, Loughrin JH, Conte ED. Anaerobic Digestion of Tetracycline Spiked Livestock Manure and Poultry Litter Increased the Abundances of Antibiotic and Heavy Metal Resistance Genes. Front Microbiol 2020; 11:614424. [PMID: 33391245 PMCID: PMC7775313 DOI: 10.3389/fmicb.2020.614424] [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: 10/06/2020] [Accepted: 11/30/2020] [Indexed: 11/13/2022] Open
Abstract
Anaerobic digestion is used for the treatment of animal manure by generating biogas. Heavy metals cause environmental pollutions and co-select for antimicrobial resistance. We evaluated the impact of mesophilic anaerobic digestion of cattle manure (CM), swine manure (SM) and poultry litter (PL) on the concentrations of seven tetracycline [tet(A), tet(B), tet(G), tet(M), tet(O), tet(Q), and tet(W)], macrolide [erm(B)], methicillin (mecA and mecC), copper (copB, pcoA, pcoD, and tcrB) and zinc (czrC) resistance genes, and three bacterial species (E. coli, Enterococcus spp. and Staphylococcus aureus). The total bacterial population and total abundance of the seven tet genes significantly increased in the three manure types after digestion. Concentration of tet(M) was strongly correlated with that of erm(B) and enterococci. As concentration of tetracyclines declined during anaerobic digestion, that of four tet genes (A, B, Q, and W) and 16S rRNA increased, that of tet(M) decreased, and that of tet(G) and tet(O) did not change. Concentrations of copB and pcoA did not change; while that of pcoD did not change in the PL, it increased in the SM and CM. While the concentration of enterococci remained unchanged in CM, it significantly increased in the PL and SM. Concentrations of tcrB significantly increased in the three manure types. While concentrations of S. aureus significantly increased in the CM and PL, that of SM was not affected. Concentrations of mecC significantly increased in all manure types after digestion; while mecA concentrations did not change in the SM, they significantly increased in CM and PL. While concentration of czrC remained low in the CM, it increased in the PL but declined in the SM. In conclusion, while mesophilic anaerobic digestion of animal manure decreased concentration of tetracyclines, it increased the concentrations of total bacteria, tet genes, E. coli, enterococci and S. aureus and methicillin resistance genes. It did not have any effect on concentrations of heavy metals; concentrations of heavy metal resistance genes either increased or remained unaffected depending on the animal species. This study showed the need for post-digestion treatments of animal manure to remove bacteria, antibiotic resistance genes, heavy metals and their resistance genes.
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Affiliation(s)
- Getahun E Agga
- USDA, Agricultural Research Service, Food Animal Environmental Systems Research Unit, Bowling Green, KY, United States
| | - John Kasumba
- Department of Chemistry, Western Kentucky University, Bowling Green, KY, United States
| | - John H Loughrin
- USDA, Agricultural Research Service, Food Animal Environmental Systems Research Unit, Bowling Green, KY, United States
| | - Eric D Conte
- Department of Chemistry, Western Kentucky University, Bowling Green, KY, United States
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27
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Jong MC, Harwood CR, Blackburn A, Snape JR, Graham DW. Impact of Redox Conditions on Antibiotic Resistance Conjugative Gene Transfer Frequency and Plasmid Fate in Wastewater Ecosystems. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:14984-14993. [PMID: 33191749 DOI: 10.1021/acs.est.0c03714] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Wastewater is a common pathway for the spread of antibiotic resistance (AR) genes and bacteria into the environment. Biological treatment can mitigate this path, but horizontal gene transfer (HGT) between bacteria also occurs in such processes, although the influence of bioreactor habitat and ecology on HGT frequency is not well understood. Here, we quantified how oxidation-reduction (redox) conditions impact the fate of a Green fluorescent protein (Gfp)-tagged AR plasmid (pRP4-gfp) within an E. coli host (EcoFJ1) in the liquid phase and biofilms in bioreactors. Replicate reactors treating domestic wastewater were operated under stable aerobic (+195 ± 25 mV), anoxic (-15 ± 50 mV), and anaerobic (-195 ± 15 mV) conditions, and flow cytometry and selective plating were used to quantify donor strain, EcoFJ1(pRP4-gfp), and putative transconjugants over time. Plasmid pRP4-gfp-bearing cells disappeared rapidly in aerobic ecosystems (∼2.0 log reduction after 72 h), especially in the liquid phase. In contrast, EcoFJ1(pRP4-gfp) and putative transconjugants persisted much longer in anaerobic biofilms (∼1.0 log reduction, after 72 h). Plasmid transfer frequencies were also higher under anaerobic conditions. In parallel, protozoan abundances were over 20 times higher in aerobic reactors relative to anaerobic reactors, and protozoa numbers significantly inversely correlated with pRP4-gfp signals across all reactors (p < 0.05). Taken together, observed HGT frequency and plasmid retention are impacted by habitat conditions and trophic effects, especially oxygen conditions and apparent predation. New aerobic bioreactor designs are needed, ideally employing passive aeration to save energy, to minimize resistance HGT in biological wastewater treatment processes.
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Affiliation(s)
- Mui-Choo Jong
- School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Colin R Harwood
- Biosciences Institute, Newcastle University, Newcastle upon Tyne NE2 42X, United Kingdom
| | - Adrian Blackburn
- School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Jason R Snape
- School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
- School of Life Sciences, The University of Warwick, Coventry CV4 7AL, United Kingdom
| | - David W Graham
- School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
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28
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Bairán G, Rebollar-Pérez G, Chávez-Bravo E, Torres E. Treatment Processes for Microbial Resistance Mitigation: The Technological Contribution to Tackle the Problem of Antibiotic Resistance. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E8866. [PMID: 33260585 PMCID: PMC7730199 DOI: 10.3390/ijerph17238866] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/24/2020] [Accepted: 11/24/2020] [Indexed: 12/18/2022]
Abstract
Advances generated in medicine, science, and technology have contributed to a better quality of life in recent years; however, antimicrobial resistance has also benefited from these advances, creating various environmental and health problems. Several determinants may explain the problem of antimicrobial resistance, such as wastewater treatment plants that represent a powerful agent for the promotion of antibiotic-resistant bacteria (ARB) and antibiotic resistance genes (ARG), and are an important factor in mitigating the problem. This article focuses on reviewing current technologies for ARB and ARG removal treatments, which include disinfection, constructed wetlands, advanced oxidation processes (AOP), anaerobic, aerobic, or combined treatments, and nanomaterial-based treatments. Some of these technologies are highly intensive, such as AOP; however, other technologies require long treatment times or high doses of oxidizing agents. From this review, it can be concluded that treatment technologies must be significantly enhanced before the environmental and heath problems associated with antimicrobial resistance can be effectively solved. In either case, it is necessary to achieve total removal of bacteria and genes to avoid the possibility of regrowth given by the favorable environmental conditions at treatment plant facilities.
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Affiliation(s)
- Gabriela Bairán
- Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico;
| | - Georgette Rebollar-Pérez
- Facultad de Ingeniería Química, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico;
| | - Edith Chávez-Bravo
- Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico;
| | - Eduardo Torres
- Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico;
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29
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Jang HM, Lee J, Shin SG, Shin J, Kim YM. Comparing the fate of antibiotic resistance genes in two full-scale thermophilic anaerobic digestion plants treating food wastewater. BIORESOURCE TECHNOLOGY 2020; 312:123577. [PMID: 32531733 DOI: 10.1016/j.biortech.2020.123577] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/20/2020] [Accepted: 05/21/2020] [Indexed: 05/21/2023]
Abstract
This study focus on the fate of ARGs in the full-scale AD of food wastewater (FWW). Residue was collected from two different full-scale thermophilic AD treating FWW. Ten selected ARGs, including tetracycline resistance genes (tetM, tetX, tetQ, tetH and tetG), sulfonamide resistance genes (sul1 and sul2), quinolone resistance genes (qnrD) and macrolide resistance genes (ermB and ermC), were amplified using quantitative polymerase chain reaction (qPCR). Furthermore, the class 1 integron-integrase gene (intI1) was selected as a representative mobile gene element. Remarkable reduction in the ARGs and intI1 was observed in two-stage (acidogenic-methanogenic) AD, particularly, tetG, tetH, tetM, tetQ, tetX and intI1 not detected. Additionally, significant positive correlation (p < 0.01) between ARGs and intI1 suggested a strong likelihood of horizontal gene transfer (HGT). Furthermore, stepwise multiple linear regression analysis revealed significant factors related to the fate of individual ARGs and intI1 during AD.
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Affiliation(s)
- Hyun Min Jang
- Department of Environmental Engineering and Soil Environment Research Center, Jeonbuk National University, Jeonju, Jeollabukdo 54896, Republic of Korea
| | - Jangwoo Lee
- Department of Surface Waters-Research and Management, Eawag: Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum, Switzerland
| | - Seung Gu Shin
- Department of Energy Engineering, Future Convergence Technology Research Institute, Gyeongnam National University of Science and Technology, Jinju 52725, Republic of Korea
| | - Jingyeong Shin
- Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Young Mo Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul 04763, Republic of Korea.
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30
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Shin J, Rhee C, Shin J, Min Jang H, Gu Shin S, Mo Kim Y. Determining the composition of bacterial community and relative abundance of specific antibiotics resistance genes via thermophilic anaerobic digestion of sewage sludge. BIORESOURCE TECHNOLOGY 2020; 311:123510. [PMID: 32446235 DOI: 10.1016/j.biortech.2020.123510] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 05/03/2020] [Accepted: 05/05/2020] [Indexed: 06/11/2023]
Abstract
In this study, the effects of different temperature transitions on the dynamics of antibiotic resistance genes (ARGs) and bacterial community were investigated during start-up of thermophilic anaerobic digestion (AD) of sewage sludge. Although two thermophilic reactors showed dissimilar removal efficiencies of ARGs in batch mode, both the removal efficiency and reduction patterns of ARGs were similar in continuous stirred tank reactor (CSTR) mode, resulting in significant reduction of the total sum of the relative abundance of ARGs. Using network analysis to explore the correlation between bacterial community and some specific ARGs revealed that composition of the bacterial community played a vital role in the fluctuations in the relative abundance of the antibiotic resistome, demonstrating that shaping the development of ARGs was facilitated by vertical gene transfer. To facilitate eliminating ARGs, minimizing their hosts which persist even under long-term operations is vital in thermophilic AD.
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Affiliation(s)
- Jingyeong Shin
- Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Chaeyoung Rhee
- Department of Energy Engineering, Future Convergence Technology Research Institute, Gyeongnam National University of Science and Technology, 6 Naedong-ro 139beon-gil, Jinju 52725, Republic of Korea
| | - Juhee Shin
- Department of Energy Engineering, Future Convergence Technology Research Institute, Gyeongnam National University of Science and Technology, 6 Naedong-ro 139beon-gil, Jinju 52725, Republic of Korea
| | - Hyun Min Jang
- Engineering and Soil Environment Research Center, Jeonbuk National University, Jeonju, Jeollabukdo 54896, Republic of Korea
| | - Seung Gu Shin
- Department of Energy Engineering, Future Convergence Technology Research Institute, Gyeongnam National University of Science and Technology, 6 Naedong-ro 139beon-gil, Jinju 52725, Republic of Korea
| | - Young Mo Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul 04763, Republic of Korea.
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31
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Wang C, Song L, Zhang Z, Wang Y, Xie X. Microwave-induced release and degradation of airborne antibiotic resistance genes (ARGs) from Escherichia coli bioaerosol based on microwave absorbing material. JOURNAL OF HAZARDOUS MATERIALS 2020; 394:122535. [PMID: 32213383 DOI: 10.1016/j.jhazmat.2020.122535] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/18/2020] [Accepted: 03/12/2020] [Indexed: 06/10/2023]
Abstract
Antibiotic resistance genes (ARGs) have been detected in the atmosphere. Airborne ARGs transmission threatens human health. In the present study, we investigated the release and degradation of airborne ARGs from Escherichia coli bioaerosol through microwave (MW) irradiation. In this study, a new MW absorbing material (Fe3O4@SiC ceramic foam) that contributed to its stronger MW absorption is presented. When the MW input energy density was 7.4 × 103 kJ/m3, the concentration of airborne Escherichia coli decreased by 4.4 log. Different DNA forms were found in the air because MW irradiation ruptured cell membranes. The bound particles provide more protection for bound DNA in the degradation process than free DNA. After the self-degradation of the released airborne free ARGs, some of them would remain and continue to spread in the atmosphere. The released airborne free ARGs cannot be ignored. Total ARGs concentrations decrease rapidly with increased temperature. The inactivation rate constant of ARGs through MW irradiation is higher than that through the Fenton and UV, however, the energy efficiency per order of MW irradiation is lower. Therefore, MW irradiation with Fe3O4@SiC ceramic foam could efficiently degrade the distribution of ARGs in the atmosphere.
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Affiliation(s)
- Can Wang
- Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin, PR China; School of Environmental Science and Engineering, Tianjin University, Tianjin, PR China; School of Civil and Environmental Engineering, Georgia Institute of Technology, GA, USA.
| | - Lu Song
- Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin, PR China; School of Environmental Science and Engineering, Tianjin University, Tianjin, PR China
| | - ZhiWei Zhang
- Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin, PR China; School of Environmental Science and Engineering, Tianjin University, Tianjin, PR China
| | - YiZhu Wang
- Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin, PR China; School of Environmental Science and Engineering, Tianjin University, Tianjin, PR China
| | - Xing Xie
- School of Civil and Environmental Engineering, Georgia Institute of Technology, GA, USA
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32
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Flores-Orozco D, Patidar R, Levin DB, Sparling R, Kumar A, Çiçek N. Effect of ceftiofur on mesophilic anaerobic digestion of dairy manure and the reduction of the cephalosporin-resistance gene cmy-2. BIORESOURCE TECHNOLOGY 2020; 301:122729. [PMID: 31931335 DOI: 10.1016/j.biortech.2019.122729] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 12/24/2019] [Accepted: 12/30/2019] [Indexed: 05/22/2023]
Abstract
The effect of ceftiofur (CEF), a commonly used antibiotics on dairy farms, on the performance and stability of mesophilic batch anaerobic digestion (AD) of dairy manure was evaluated in terms of methane production, organic matter removal (COD, dCOD, TS, and VS), and synthesis of end-products (VFAs, CO2, and H2). The results indicated that only CEF concentrations of 10 mg/L or higher significantly affected the performance of the AD process, although the overall stability was not compromised. Biochemical analyses suggested that hydrolytic microorganisms were the most affected by the presence of CEF leading to lower COD removal, whereas acetogens were only temporarily slowed down. Methanogens, on the other hand, were not directly affected by any of the CEF concentrations tested (0.2-250 mg/L). Additionally, the presence of CEF was shown to alter the incidence of the cephalosporin-resistance marker, cmy-2, although an overall reduction was achieved in 15-day batch anaerobic digestion trials.
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Affiliation(s)
- Daniel Flores-Orozco
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, Manitoba R3T 5V6, Canada.
| | - Rakesh Patidar
- Department of Microbiology, University of Manitoba, Winnipeg, Manitoba R3T 5V6, Canada.
| | - David B Levin
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, Manitoba R3T 5V6, Canada.
| | - Richard Sparling
- Department of Microbiology, University of Manitoba, Winnipeg, Manitoba R3T 5V6, Canada.
| | - Ayush Kumar
- Department of Microbiology, University of Manitoba, Winnipeg, Manitoba R3T 5V6, Canada.
| | - Nazim Çiçek
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, Manitoba R3T 5V6, Canada.
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33
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Cheng D, Hao Ngo H, Guo W, Wang Chang S, Duc Nguyen D, Liu Y, Zhang X, Shan X, Liu Y. Contribution of antibiotics to the fate of antibiotic resistance genes in anaerobic treatment processes of swine wastewater: A review. BIORESOURCE TECHNOLOGY 2020; 299:122654. [PMID: 31917094 DOI: 10.1016/j.biortech.2019.122654] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 12/16/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
Antibiotic resistance genes (ARGs) in water environment have become a global health concern. Swine wastewater is widely considered to be one of the major contributors for promoting the proliferation of ARGs in water environments. This paper comprehensively reviews and discusses the occurrence and removal of ARGs in anaerobic treatment of swine wastewater, and contributions of antibiotics to the fate of ARGs. The results reveal that ARGs' removal is unstable during anaerobic processes, which negatively associated with the presence of antibiotics. The abundance of bacteria carrying ARGs increases with the addition of antibiotics and results in the spread of ARGs. The positive relationship was found between antibiotics and the abundance and transfer of ARGs in this review. However, it is necessary to understand the correlation among antibiotics, ARGs and microbial communities, and obtain more knowledge about controlling the dissemination of ARGs in the environment.
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Affiliation(s)
- Dongle Cheng
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia
| | - Huu Hao Ngo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia; Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess, Department of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China; Department of Environmental Energy Engineering, Kyonggi University, 442-760, Republic of Korea.
| | - Wenshan Guo
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia; Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess, Department of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China
| | - Soon Wang Chang
- Department of Environmental Energy Engineering, Kyonggi University, 442-760, Republic of Korea
| | - Dinh Duc Nguyen
- Department of Environmental Energy Engineering, Kyonggi University, 442-760, Republic of Korea; Institution of Research and Development, Duy Tan University, Da Nang, Viet Nam; NTT Institute of Hi-Technology, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
| | - Yiwen Liu
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NWS 2007, Australia
| | - Xinbo Zhang
- Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess, Department of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China
| | - Xue Shan
- Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess, Department of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China
| | - Yi Liu
- Department of Environmental Science and Engineering, Fudan University, 2205 Songhu Road, Shanghai 200438, PR China
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Yoo K, Yoo H, Lee J, Choi EJ, Park J. Exploring the antibiotic resistome in activated sludge and anaerobic digestion sludge in an urban wastewater treatment plant via metagenomic analysis. J Microbiol 2019; 58:123-130. [DOI: 10.1007/s12275-020-9309-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 10/08/2019] [Accepted: 11/03/2019] [Indexed: 10/25/2022]
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Sun C, Li W, Chen Z, Qin W, Wen X. Responses of antibiotics, antibiotic resistance genes, and mobile genetic elements in sewage sludge to thermal hydrolysis pre-treatment and various anaerobic digestion conditions. ENVIRONMENT INTERNATIONAL 2019; 133:105156. [PMID: 31675532 DOI: 10.1016/j.envint.2019.105156] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 09/03/2019] [Accepted: 09/03/2019] [Indexed: 06/10/2023]
Abstract
Sewage sludge from wastewater treatment plants (WWTPs) harbours large amounts of antibiotics, antibiotic resistance genes (ARGs), and mobile genetic elements (MGEs), the variation and fate of these emerging pollutants during sludge treatment processes must be thoroughly studied to reduce their potential risks to human health. In this study, 7 pilot-scale CSTR anaerobic digesters were established with the same seed sludge and fed with the same thermal hydrolysis pre-treated sewage sludge, while operating under different conditions. High-throughput quantitative PCR, UPLC-MS/MS and Illumina Hiseq-sequencing were used to systematically evaluate the responses of antibiotics, ARGs, and MGEs in sewage sludge to thermal hydrolysis pre-treatment and various anaerobic digestion (AD) conditions. The results showed that thermal hydrolysis effectively reduced the abundance (>94%) of almost all subtypes of ARGs and MGEs, and it was a powerful technology for reducing tetracyclines, macrolides, and lincosamides. Besides, the abundance of ARGs and MGEs in thermophilic digesters was lower than that in mesophilic digesters, suggesting that thermophilic digesters could be used to avoid the ARGs rebounding. In addition, the thermophilic system further reduced the concentrations of quinolones. For the digesters operated under the mesophilic conditions, a longer hydraulic retention time (HRT) facilitated the removal of antibiotics, ARGs, and MGEs. Furthermore, the microbial community and MGEs had important effects on the persistence and proliferation of ARGs in AD process. The findings of this study provide effective clues for controlling the spread of antibiotic resistance and suggest the optimal operating conditions of digesters.
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Affiliation(s)
- Chenxiang Sun
- Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, China
| | - Wei Li
- Beijing Engineering Technology Research Center for Municipal Sewage Reclamation, R&D Center, Beijing Drainage Group Co., Ltd., Beijing 100124, China
| | - Zhan Chen
- Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, China
| | - Wentao Qin
- Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, China
| | - Xianghua Wen
- Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, China.
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Wang Y, Yin Z, Zhao H, Hu J, Kang Y. The effects of tetracycline concentrations on tetracycline resistance genes and their bacterial hosts in the gut passages of earthworms (Eisenia fetida) feeding on domestic sludge. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:34412-34420. [PMID: 31637618 DOI: 10.1007/s11356-019-06495-y] [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: 04/18/2019] [Accepted: 09/10/2019] [Indexed: 06/10/2023]
Abstract
Vermi-composting is considered to be a feasible method for reducing tetracycline resistance genes (TRGs) in the sludge. Nevertheless, the way different gut passages of earthworm might affect the fates of TRGs and whether this process is affected by tetracycline (TC) concentrations need to be further investigated. In this study, we examined the effects of TC concentrations on changes in TRGs and bacterial communities in gut passages of earthworm were determined by using quantitative PCR and Illumina high-throughput sequencing. TRGs and intI1 were mainly reduced in the hindgut under the TC concentrations ranging from 0 to 25 mg/kg, while they were enriched under higher TC stress exposure. Consequently, we suggest the TC limitation of 25 mg/kg in the domestic sludge (DS) for vermi-composting. Although the predominant genera were TC sensitive under TC stress, many bacterial hosts harboring multiple TRGs (especially those in the hindgut) should be paid further attention to. In the foregut, five genera with abundant tetracycline-resistant bacteria (TRB) were specialized taxa. Among these genera, Unclassified_Solirubrobacterales and Pirellulaceae were probably related to the digestion processes. Other unclassified taxa related to the TRGs were probably derived from the DS. Five genera with abundant TRB were shared in the gut passages, and three specialized genera in the hindgut. These genera could spread TRGs and intI1 to the environment. These results suggest that vermi-composting is a feasible approach for TRG control in the DS containing TC concentration that does not exceed 25 mg/kg. Fates of TRGs and intI1 widely differ in the gut passages, showing inevitable connections with bacterial communities.
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Affiliation(s)
- Yue Wang
- Environmental Science & Engineering, Yangzhou University, Yangzhou, 225127, Jiangsu, People's Republic of China
| | - Zhifeng Yin
- Institute of Resource Utilization of Agricultural Waste, Yancheng Teachers University, Yancheng, Jiangsu, People's Republic of China
| | - Haitao Zhao
- Environmental Science & Engineering, Yangzhou University, Yangzhou, 225127, Jiangsu, People's Republic of China
| | - Jian Hu
- Environmental Science & Engineering, Yangzhou University, Yangzhou, 225127, Jiangsu, People's Republic of China.
| | - Yijun Kang
- Institute of Resource Utilization of Agricultural Waste, Yancheng Teachers University, Yancheng, Jiangsu, People's Republic of China.
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Cacace D, Fatta-Kassinos D, Manaia CM, Cytryn E, Kreuzinger N, Rizzo L, Karaolia P, Schwartz T, Alexander J, Merlin C, Garelick H, Schmitt H, de Vries D, Schwermer CU, Meric S, Ozkal CB, Pons MN, Kneis D, Berendonk TU. Antibiotic resistance genes in treated wastewater and in the receiving water bodies: A pan-European survey of urban settings. WATER RESEARCH 2019; 162:320-330. [PMID: 31288142 DOI: 10.1016/j.watres.2019.06.039] [Citation(s) in RCA: 177] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 06/14/2019] [Accepted: 06/15/2019] [Indexed: 05/05/2023]
Abstract
There is increasing public concern regarding the fate of antibiotic resistance genes (ARGs) during wastewater treatment, their persistence during the treatment process and their potential impacts on the receiving water bodies. In this study, we used quantitative PCR (qPCR) to determine the abundance of nine ARGs and a class 1 integron associated integrase gene in 16 wastewater treatment plant (WWTP) effluents from ten different European countries. In order to assess the impact on the receiving water bodies, gene abundances in the latter were also analysed. Six out of the nine ARGs analysed were detected in all effluent and river water samples. Among the quantified genes, intI1 and sul1 were the most abundant. Our results demonstrate that European WWTP contribute to the enrichment of the resistome in the receiving water bodies with the particular impact being dependent on the effluent load and local hydrological conditions. The ARGs concentrations in WWTP effluents were found to be inversely correlated to the number of implemented biological treatment steps, indicating a possible option for WWTP management. Furthermore, this study has identified blaOXA-58 as a possible resistance gene for future studies investigating the impact of WWTPs on their receiving water.
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Affiliation(s)
- Damiano Cacace
- Environmental Sciences Technische Universität Dresden, Institute of Hydrobiology, 01062, Dresden, Zellescher Weg 40, Germany
| | - Despo Fatta-Kassinos
- Department of Civil and Environmental Engineering and Nireas-International Water Research Center, School of Engineering, University of Cyprus, P.O. Box 20537, 1678, Nicosia, Cyprus
| | - Celia M Manaia
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Portugal
| | - Eddie Cytryn
- The Institute of Soil, Water and Environmental Sciences, The Volcani Center, Agricultural Research Organization, Bet-Dagan, Israel
| | - Norbert Kreuzinger
- Institute for Water Quality and Resource Management, Vienna University of Technology, Karlsplatz 13, 1040, Vienna, Austria
| | - Luigi Rizzo
- Department of Civil Engineering, University of Salerno, Via Ponte Don Melillo 1, 84084, Fisciano (SA), Italy
| | - Popi Karaolia
- Department of Civil and Environmental Engineering and Nireas-International Water Research Center, School of Engineering, University of Cyprus, P.O. Box 20537, 1678, Nicosia, Cyprus
| | - Thomas Schwartz
- Karlsruhe Institute of Technology (KIT) - Campus North, Institute of Functional Interfaces (IFG), P.O. Box 3640, 76021, Karlsruhe, Germany
| | - Johannes Alexander
- Karlsruhe Institute of Technology (KIT) - Campus North, Institute of Functional Interfaces (IFG), P.O. Box 3640, 76021, Karlsruhe, Germany
| | - Christophe Merlin
- Laboratoire de Chimie Physique et Microbiologie pour Les Matériaux et L'Environnement (LCPME), UMR 7564, CNRS-Université de Lorraine, Vandoeuvre-lès-Nancy F, 54500, France
| | - Hemda Garelick
- Department of Natural Science, Faculty of Science and Technology, Middlesex University, The Burroughs, London, NW4 4BT, UK
| | - Heike Schmitt
- Institute for Risk Assessment Sciences, Utrecht University, Yalelaan 2, 3584, CM Utrecht, the Netherlands
| | - Daisy de Vries
- Institute for Risk Assessment Sciences, Utrecht University, Yalelaan 2, 3584, CM Utrecht, the Netherlands
| | - Carsten U Schwermer
- Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, 0349, Oslo, Norway
| | - Sureyya Meric
- Corlu Engineering Faculty, Environmental Engineering Department, Namık Kemal Üniversitesi, Çorlu, 59860, Tekirdağ, Turkey
| | - Can Burak Ozkal
- Corlu Engineering Faculty, Environmental Engineering Department, Namık Kemal Üniversitesi, Çorlu, 59860, Tekirdağ, Turkey
| | - Marie-Noelle Pons
- Laboratoire Réactions et Génie des Procédés, CNRS-Université de Lorraine, 1, Rue Grandville, BP 20451, 54001, Nancy Cedex, France
| | - David Kneis
- Environmental Sciences Technische Universität Dresden, Institute of Hydrobiology, 01062, Dresden, Zellescher Weg 40, Germany
| | - Thomas U Berendonk
- Environmental Sciences Technische Universität Dresden, Institute of Hydrobiology, 01062, Dresden, Zellescher Weg 40, Germany.
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Potential Benefits and Risks for Soil Health Derived From the Use of Organic Amendments in Agriculture. AGRONOMY-BASEL 2019. [DOI: 10.3390/agronomy9090542] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The use of organic amendments in agriculture is a common practice due to their potential to increase crop productivity and enhance soil health. Indeed, organic amendments of different origin and composition (e.g., animal slurry, manure, compost, sewage sludge, etc.) can supply valuable nutrients to the soil, as well as increase its organic matter content, with concomitant benefits for soil health. However, the application of organic amendments to agricultural soil entails a variety of risks for environmental and human health. Organic amendments often contain a range of pollutants, including heavy metals, persistent organic pollutants, potential human pathogens, and emerging pollutants. Regarding emerging pollutants, the presence of antibiotic residues, antibiotic-resistant bacteria, and antibiotic-resistance genes in agricultural amendments is currently a matter of much concern, due to the concomitant risks for human health. Similarly, currently, the introduction of microplastics to agricultural soil, via the application of organic amendments (mainly, sewage sludge), is a topic of much relevance, owing to its magnitude and potential adverse effects for environmental health. There is, currently, much interest in the development of efficient strategies to mitigate the risks associated to the application of organic amendments to agricultural soil, while benefiting from their numerous advantages.
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Zhang J, Lu T, Shen P, Sui Q, Zhong H, Liu J, Tong J, Wei Y. The role of substrate types and substrate microbial community on the fate of antibiotic resistance genes during anaerobic digestion. CHEMOSPHERE 2019; 229:461-470. [PMID: 31091487 DOI: 10.1016/j.chemosphere.2019.05.036] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 04/29/2019] [Accepted: 05/04/2019] [Indexed: 06/09/2023]
Abstract
Anaerobic digestion (AD) is regarded as a promising technology in energy recovery and the spread mitigation of antibiotic resistance. However, the performance of AD is dependent on various factors, and substrate type is one of the most important. In this study, the fate of antibiotic resistance genes (ARGs) response to the substrate types was investigated, and three typical environmental reservoirs of ARGs (pig manure, chicken manure and sewage sludge) were selected. The role of substrate microbial community on the fate of ARGs was clarified through the comparison between the AD of the substrates with and without a prior autoclave-disinfected step. Results showed that substrate types significantly influenced the fate of ARGs, while the influence from the substrate microbial community was limited. The concentration of antibiotics, the horizontal gene transfer reflected by intI1 and co-selection from heavy metals reflected by metal resistance genes (MRGs) were all reduced effectively. Microbial community varied from substrate types and dominated the ARGs fate concerning the standardized total effects through the mantel test and SEM analysis. The fate of tetX, ermF, tetM and ermB was mainly determined by the physicochemical parameters and the phyla of Firmicutes and Bacteroides. The phyla of Actinobacteria, pcoA and czcA contributed most to the reduction of blaTEM and mcr-1, and the phyla of Proteobacteria, Chloroflexi, Synergistetes, Euryarchaeote, intI1 and merA correlated significantly with the fate of blaCTX-M, ereA, tetG and sulI. This study highlighted the importance of substrate types when considering the fate of ARGs during AD.
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Affiliation(s)
- 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.
| | - Tiedong Lu
- College of Life Science and Technology, Guangxi University, Nanning, 530005, Guangxi, China
| | - Peihong Shen
- College of Life Science and Technology, Guangxi University, Nanning, 530005, Guangxi, 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
| | - Hui Zhong
- 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
| | - Jibao Liu
- 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
| | - Juan Tong
- 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.
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40
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Chu L, Chen D, Wang J, Yang Z, Shen Y. Degradation of antibiotics and antibiotic resistance genes in erythromycin fermentation residues using radiation coupled with peroxymonosulfate oxidation. WASTE MANAGEMENT (NEW YORK, N.Y.) 2019; 96:190-197. [PMID: 31376964 DOI: 10.1016/j.wasman.2019.07.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/10/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
Ionizing radiation coupled with peroxymonosulfate (PMS) oxidation was developed to degrade antibiotics and antibiotic resistance genes (ARGs) from the erythromycin fermentation (EryF) residual wastes. The experimental results showed that the ERY content and ARGs abundance decreased with increase of the absorbed dose and PMS dosage and gamma irradiation was more effective to abate ARGs from the EryF wastes. The removal efficiency of ERY reached 49-55% and more than 96-99% of ARGs (1.32-2.55 log) was eliminated with the absorbed dose of 25-50 kGy and PMS dosage of 50-100 mM. Illumina pyrosequencing revealed that 3 bacterial phyla, Proteobacteria, Firmicutes and Fusobacteria were highly enriched and the ARGs-linked hosts were affiliated to the genera Aeromonas, Enterobacteriaceae and Enterobacter in the phylum Proteobacteria. The abundance of the ARGs-linked bacteria decreased by gamma/PMS treatment. Ionizing radiation/PMS treatment with the doses of 25 kGy and 50 mM PMS is proposed for potential practical application.
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Affiliation(s)
- Libing Chu
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China; Beijing Key Laboratory of Radioactive Waste Treatment, INET, Tsinghua University, Beijing 100084, PR China
| | - Dan Chen
- School of Water Resources and Environment, China University of Geosciences, Beijing 100083, PR China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China; Beijing Key Laboratory of Radioactive Waste Treatment, INET, Tsinghua University, Beijing 100084, PR China.
| | - Zhiling Yang
- School of Water Resources and Environment, China University of Geosciences, Beijing 100083, PR China
| | - Yunpeng Shen
- Yili Chuanning Biotechnology Company, Ltd., Xinjiang 835007, PR China; School of Economics and Management, Center for Innovation Management Research, Xinjiang University, Xinjiang 830047, PR China
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Zhao Q, Liu Y. Is anaerobic digestion a reliable barrier for deactivation of pathogens in biosludge? THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 668:893-902. [PMID: 30870755 PMCID: PMC7112049 DOI: 10.1016/j.scitotenv.2019.03.063] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 03/04/2019] [Accepted: 03/05/2019] [Indexed: 04/14/2023]
Abstract
As World Health Organization advocates, the global burden of sanitation related disease and access to safely managed sanitation and safely treated wastewater should be monitored strictly. However, the spread of pathogens through various agricultural applications or direct discharge of sewage sludge generated in municipal wastewater treatment plants poses a serious challenge on the environment and public health. Anaerobic digestion (AD), the principal method of stabilizing biosolids, can efficiently and largely deactivate viable pathogens, including parasite, virus, and the pathogens harboring antibiotic resistance genes. This review aims to provide a critical overview regarding the deactivation of sludge-associated pathogens by AD, through which a serious concern on the effectiveness and rationality of AD towards sludge pathogens control was raised. Meanwhile, the underlying deactivation mechanisms and affecting factors were all discussed, with the focus on pathogen-associated modeling, engineering design and technological aspects of AD. Lastly, a matric method incorporating the operating strategy of AD with the risk assessment was proposed for evaluating the reliability of AD-based pathogen deactivation, while the research agenda forward was also outlined.
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Affiliation(s)
- Qian Zhao
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, 1000 Fengming Road, Jinan 250101, China; Shandong Province Co-Innovation Center of Green Building, Jinan 250101, China; Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, China.
| | - Yu Liu
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore; Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, 637141, Singapore.
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42
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Xia X, Wang Z, Fu Y, Du XD, Gao B, Zhou Y, He J, Wang Y, Shen J, Jiang H, Wu Y. Association of colistin residues and manure treatment with the abundance of mcr-1 gene in swine feedlots. ENVIRONMENT INTERNATIONAL 2019; 127:361-370. [PMID: 30954722 DOI: 10.1016/j.envint.2019.03.061] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/25/2019] [Accepted: 03/26/2019] [Indexed: 05/25/2023]
Abstract
BACKGROUND The extensive use of colistin in swine production may have contributed to the recent emergence of corresponding mobile resistance gene mcr-1. The use of colistin as a feed additive was banned in China in April 2017. OBJECTIVES To examine the occurrence of colistin and dissemination of mcr-1 in swine feedlots before and after the colistin ban and effects of different manure treatments. METHODS Environmental samples were collected from swine feedlots before (December 2016) and after (December 2017) the colistin ban. Colistin concentrations were determined by ultra-high performance liquid chromatography coupled to tandem mass spectrometry. The prevalence of mcr-1 were determined by quantitative PCR analysis, while bacterial community composition was investigated by 16S rRNA sequencing. RESULTS In 2016, colistin was detected in feed and fresh manure samples at 67 mg/kg and 17 mg/kg, respectively, but was absent from all samples in 2017. In 2016, the relative abundance of mcr-1 in fresh manure was lower than that in solid samples after natural drying, while a higher relative abundance was detected in fresh manure samples compared with biogas slurry samples. A strong correlation between colistin concentration and relative abundance of mcr-1 was observed in fresh manure. The samples collected in 2017 showed a lower relative abundance of mcr-1 compared with those collected in 2016. Bacterial community analysis showed that the abundance of Enterobacteriaceae, which act as a vehicle and reservoir of mcr-1, increased with natural dying but decreased with anaerobic digestion. CONCLUSIONS The presence of colistin exerts direct selection pressure for the accumulation of mcr-1 in manure, while the ban on colistin likely halted the dissemination of mcr-1 on pig farms. Anaerobic digestion is an effective waste treatment process for removing mcr-1, which might be mainly driven by the shift in bacterial community structure.
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Affiliation(s)
- Xi Xia
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Zheng Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yulin Fu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Xiang-Dang Du
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Binwen Gao
- Institute of Animal Husbandry and Veterinary Science, Henan Academy of Agricultural Sciences, Zhengzhou, China
| | - Yuqing Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Junjia He
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yang Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jianzhong Shen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Haiyang Jiang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China.
| | - Yongning Wu
- NHC Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, Beijing, China.
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Ma J, Cui Y, Zhang W, Wang C, Li A. Fate of antibiotics and the related antibiotic resistance genes during sludge stabilization in sludge treatment wetlands. CHEMOSPHERE 2019; 224:502-508. [PMID: 30831502 DOI: 10.1016/j.chemosphere.2019.02.168] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 02/22/2019] [Accepted: 02/23/2019] [Indexed: 06/09/2023]
Abstract
Antibiotics contamination and related antibiotics resistance genes (ARGs) in wastewater sludge have been a concern for environmental pollution and human health risk for years. This study investigated the fate of antibiotics and related ARGs in sludge from sludge treatment wetlands (STWs). We examined three sludge treatment beds i.e. unit No.1 was sludge drying bed with aeration tubes; unit No.2 was a ventilated sludge drying reed bed; and the unit No.3 was a sludge drying reed bed without aeration tubes. The targeted antibiotics included oxytetracycline, roxithromycin and azithromycin. The targeted ARGs included tetA, tetC, msrSA and ermB. The results indicated that in all three units antibiotics were removed significantly and related ARGs declined over one year period. The antibiotics concentrations in the surface layer were lower than those in the bottom layer. The highest removal efficiency of the targeted antibiotics was observed in the unit No.2. The removal efficiency of the targeted ARGs influenced by different parameters, especially reeds, aeration tubes and temperature. Correlation analysis between the concentrations of antibiotics and corresponding ARGs showed that in both the bottom and surface layer of all three units, a significant correlation (p < 0.05) was found between the concentrations of roxithromycin and azithromycin and the absolute abundances of msrSA. A significant correlation (p < 0.05) was also observed between the concentrations of oxytetracycline and the absolute abundances of tetA and tetC. The results demonstrated that STWs can effectively reduce the target antibiotics contents and related ARGs; and the STW with reed and aeration tubes performed better.
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Affiliation(s)
- Junwen Ma
- School of Environment Science & Technology, Dalian University of Technology, Dalian, 116024, China; College of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Yubo Cui
- College of Environment and Resources, Dalian Minzu University, Dalian, 116600, China.
| | - Wanjun Zhang
- College of Environment and Resources, Dalian Minzu University, Dalian, 116600, China
| | - Chao Wang
- School of Environment Science & Technology, Dalian University of Technology, Dalian, 116024, China
| | - Aimin Li
- School of Environment Science & Technology, Dalian University of Technology, Dalian, 116024, China
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44
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Xie S, Wu N, Tian J, Liu X, Wu S, Mo Q, Lu S. Review on the removal of antibiotic resistance genes from livestock manure by composting. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1755-1315/237/5/052010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Shen Y, Chu L, Zhuan R, Xiang X, Sun H, Wang J. Degradation of antibiotics and antibiotic resistance genes in fermentation residues by ionizing radiation: A new insight into a sustainable management of antibiotic fermentative residuals. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 232:171-178. [PMID: 30472560 DOI: 10.1016/j.jenvman.2018.11.050] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 10/20/2018] [Accepted: 11/14/2018] [Indexed: 06/09/2023]
Abstract
Antibiotic fermentative residues are categorized into hazardous wastes in China due to the existence of antibiotic resistance genes (ARGs) and residual antibiotics How to treat and manage these wastes is a new challenge. This paper investigated the treatment of erythromycin thiocyanate fermentation (EryTcF) residues using ionizing radiation technology for removing ARGs and antibiotics from the fermentation residues. The results showed that as exposed the EryTcF residues to gamma radiation, the abundance of four macrolide resistance genes (ereA, ermB, mefA and mpfB) decreased 1.0-1.3 log with 90-95% removal, and around 56% of erythromycin was removed at absorbed dose of 30 kGy and room temperature (19-22 °C). Direct action of γ-ray radiation contributed to 42-53% of ARGs removal and indirect action (radicals' reaction) was mainly responsible for erythromycin removal (84%). The positive correlation between total ARGs and Shannon index was observed. The potential ARGs-linked hosts were assigned to genera Aeromonas and Enterobacteriaceae and their abundance decreased by 36-43% at 30 kGy. Radiation has not obvious influence on the nutrient components of residues, such as protein content, suggesting that the radiation treated fermentative residues can be used as fertilizer, which is favorable for the development of recycling economy in antibiotic pharmaceutical factory. The results could provide a new insight into a sustainable management of antibiotic fermentative residuals.
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Affiliation(s)
- Yunpeng Shen
- School of Economics and Management, Center for Innovation Management Research, Xinjiang University, Xinjiang 830047, PR China
| | - Libing Chu
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China
| | - Run Zhuan
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China
| | - Xianhong Xiang
- School of Economics and Management, Center for Innovation Management Research, Xinjiang University, Xinjiang 830047, PR China
| | - Hui Sun
- School of Economics and Management, Center for Innovation Management Research, Xinjiang University, Xinjiang 830047, PR China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China.
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Couch M, Agga GE, Kasumba J, Parekh RR, Loughrin JH, Conte ED. Abundances of Tetracycline Resistance Genes and Tetracycline Antibiotics during Anaerobic Digestion of Swine Waste. JOURNAL OF ENVIRONMENTAL QUALITY 2019; 48:171-178. [PMID: 30640349 DOI: 10.2134/jeq2018.09.0331] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The impact of anaerobic digestion of animal waste on the persistence of antibiotic resistance genes (ARGs) and antibiotics is not widely studied. Two identical, 800-L digesters seeded with swine slurry were followed up to 100 d in three separate trials. The trials received varying amounts of antibiotic-free corn ( L.) mixed with water to maintain the digestion process. Biogas production, seven tetracycline resistance () genes, and three tetracyclines and their transformation products were measured. Biogas production proportionally increased as the feeding loads increased between trials. In Trial 1, log gene copies showed small but statistically significant ( < 0.01) increases during digestion. In Trial 2, anaerobic digestion did not have a significant ( > 0.05) effect except for significant reductions in B ( < 0.0001) and G ( = 0.0335) log gene copies. In Trial 3, which received the highest amount of corn mix, log copies of the 16S ribosomal RNA and the genes significantly ( < 0.0001) reduced over time during digestion. Up to 36 μg L tetracycline, 112 μg L chlortetracycline, 11.9 mg L isochlortetracycline, and 30 μg L 4-epitetracycline were detected both in the liquid and solid digestates. Results of this study revealed that although anaerobic digestion of swine waste can produce useful biogas, it does not result in complete removal of bacteria, ARGs, and antibiotics regardless of differences in the feeding loads between trials. Further effluent and sludge treatments are required prior to their downstream use in crop production to minimize emergence and environmental dissemination of antimicrobial-resistant bacteria through animal manure.
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Tong J, Lu X, Zhang J, Angelidaki I, Wei Y. Factors influencing the fate of antibiotic resistance genes during thermochemical pretreatment and anaerobic digestion of pharmaceutical waste sludge. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 243:1403-1413. [PMID: 30278414 DOI: 10.1016/j.envpol.2018.09.096] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 09/17/2018] [Accepted: 09/19/2018] [Indexed: 05/16/2023]
Abstract
The prevalence of antibiotic resistance genes (ARGs) in waste sludge, especially for the pharmaceutical waste sludge, presents great potential risks to human health. Although ARGs and factors affecting their spreading are of major importance for human health, the factors influencing the fate of ARGs during sludge treatment, especially for pharmaceutical sludge treatment are not yet well understood. In order to be able to minimize ARGs spreading, it is important to find what is influencing their spreading. Therefore, certain factors, such as the sludge characteristics, bacterial diversity and community composition, and mobile genetic elements (MGEs) during the advanced AD of pharmaceutical sludge with different pretreatments were studied, and their affinity with ARGs was elucidated by Spearman correlation analysis. Furthermore, multiple linear regression was introduced to evaluate the importance of the various factors. Results showed that 59.7%-88.3% of the variations in individual ARGs and total ARGs can be explained by the corresponding factors. Bacterial diversity rather than specific bacterial community composition affected the fate of ARGs, whereas alkalinity was the most important factor on ARGs among all sludge characteristics investigated in this study. Besides, 66.4% of variation of total ARGs was driven by the changes of MGEs. Multiple linear regression models also reveal the collective effect of these factors on ARGs, and the contributions of each factor impact on ARGs. This study provides more comprehension about the factors impact on the fate of ARGs during pharmaceutical sludge treatment, and offers an approach to evaluate the importance of each factor, which method could be introduced for evaluation of factors influencing ARGs during other types of sludge or wastewater treatment.
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Affiliation(s)
- Juan Tong
- 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, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Xueting Lu
- Department of Water Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, 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, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Irini Angelidaki
- Department of Environmental Engineering, Technical University of Denmark, Copenhagen Lyngby, 2800, Denmark
| | - 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, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
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Jang HM, Lee J, Choi S, Shin J, Kan E, Kim YM. Response of antibiotic and heavy metal resistance genes to two different temperature sequences in anaerobic digestion of waste activated sludge. BIORESOURCE TECHNOLOGY 2018; 267:303-310. [PMID: 30029175 DOI: 10.1016/j.biortech.2018.07.051] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 07/07/2018] [Accepted: 07/10/2018] [Indexed: 06/08/2023]
Abstract
Response of antibiotic resistance genes (ARGs) and heavy metal resistance genes (HMRGs) to two different temperature sequences (i.e., mesophilic-thermophilic and thermophilic-mesophilic) were investigated. Higher removal of total ARGs (twenty-one targeted subtypes) and HMRGs (three targeted subtypes) was achieved by the mesophilic-thermophilic sequence than by the thermophilic-mesophilic sequence. The sequence of mesophilic-thermophilic showed the highest removal of total ARGs, but the sequence of thermophilic-mesophilic proved more suitable for removal of class 1 integrons (intI1). Correlation analysis indicated that intI1 correlated significantly with tetG, tetQ, tetX, sul2, aac(6')-lb-cr, blaTEM, ermB and floR. High-throughput sequencing revealed that the mesophilic-thermophilic sequence TPAD removed more human bacterial pathogens (HBPs) than did the thermophilic-mesophilic sequence. Also, significantly positive correlation was observed between ARGs and HBPs. For instance, Mycoplasma pneumonia showed significantly positive correlation with several ARGs including tetE, tetQ, tetX, tetZ, sul1, sul2, aac(6')-lb-cr and floR.
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Affiliation(s)
- Hyun Min Jang
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, Buk-gu, Gwangju 500-712, Republic of Korea
| | - Jangwoo Lee
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, Buk-gu, Gwangju 500-712, Republic of Korea
| | - Sangki Choi
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, Buk-gu, Gwangju 500-712, Republic of Korea
| | - Jingyeong Shin
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, Buk-gu, Gwangju 500-712, Republic of Korea
| | - Eunsung Kan
- Texas A&M AgriLife Research Center, 1229 North US Highway 281, Stephenville, TX 76401, USA; Office of Sponsored Projects, Tarleton State University, 1333 W. Washington, Stephenville, TX 76401, USA
| | - Young Mo Kim
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, Buk-gu, Gwangju 500-712, Republic of Korea.
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Montemurro N, García-Vara M, Peña-Herrera JM, Lladó J, Barceló D, Pérez S. Conventional and Advanced Processes for the Removal of Pharmaceuticals and Their Human Metabolites from Wastewater. ACTA ACUST UNITED AC 2018. [DOI: 10.1021/bk-2018-1302.ch002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Affiliation(s)
- Nicola Montemurro
- Water and Soil Quality Research Group, Department of Environmental Chemistry (IDAEA), Spanish National Research Council (CSIC), Barcelona 08034, Spain
| | - Manuel García-Vara
- Water and Soil Quality Research Group, Department of Environmental Chemistry (IDAEA), Spanish National Research Council (CSIC), Barcelona 08034, Spain
| | - Juan Manuel Peña-Herrera
- Water and Soil Quality Research Group, Department of Environmental Chemistry (IDAEA), Spanish National Research Council (CSIC), Barcelona 08034, Spain
| | - Jordi Lladó
- Department of Mining, Industrial and TIC Engineering (EMIT), Universitat Politécnica de Catalunya (UPC), Manresa, Barcelona 08242, Spain
| | - Damià Barceló
- Water and Soil Quality Research Group, Department of Environmental Chemistry (IDAEA), Spanish National Research Council (CSIC), Barcelona 08034, Spain
| | - Sandra Pérez
- Water and Soil Quality Research Group, Department of Environmental Chemistry (IDAEA), Spanish National Research Council (CSIC), Barcelona 08034, Spain
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Guo T, Lou C, Zhai W, Tang X, Hashmi MZ, Murtaza R, Li Y, Liu X, Xu J. Increased occurrence of heavy metals, antibiotics and resistance genes in surface soil after long-term application of manure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 635:995-1003. [PMID: 29710621 DOI: 10.1016/j.scitotenv.2018.04.194] [Citation(s) in RCA: 122] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 04/10/2018] [Accepted: 04/14/2018] [Indexed: 05/20/2023]
Abstract
The purpose of this study was to investigate the impact of long-term application of pig manure on the accumulation of heavy metals, antibiotics and ARGs in surface soil sampled from the Jiaxing long-term field experimental site with three manure treatments, N-PM (0 kg/ha/y, dw), L-PM (7720 kg/ha/y, dw), and H-PM (11,580 kg/ha/y, dw), in 2013 and 2014. The results showed that most serious metal pollution of Zn and Cu was recorded in all manured samples in both years, and their contents exceeded the soil quality standards. Among the three tetracyclines, chlortetracycline was the predominant antibiotic detected with a range of 3.04-98.03 μg·kg-1 in 2013 and 28.67-344.74 μg·kg-1 in 2014 after long-term pig manure application. Q-PCR results showed that the average accumulation of ribosomal protection protein genes (tetM, tetO, tetQ and tetW) was lower than most of the efflux pump genes (tetA and tetG). The abundance of tet and sul genes of those sites with manure application was significantly higher than that of sites without manure application in both years. Metagenomics analysis of ARGs revealed that the abundance of multidrug resistance genes was the most abundant subtype, followed by fluoroquinolone, bacitracin, sulfonamide and tetracycline. There was a positive correlation between the levels of ARGs; soil organic matter, antibiotics, Cu, As, and Zn levels in both years. These results may shed light on the mechanism underlining the effects of long-term manure application on the occurrence and dissemination of ARGs in surface soil.
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Affiliation(s)
- Ting Guo
- Institute of Soil, Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Chenlu Lou
- Institute of Soil, Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Weiwei Zhai
- Institute of Soil, Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Xianjin Tang
- Institute of Soil, Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Muhammad Z Hashmi
- Center for Climate Research and Development, COMSATS Institute of Information Technology, Islamabad Campus, Park Road, Chak Shahzad, Islamabad, Pakistan
| | - Rabbia Murtaza
- Center for Climate Research and Development, COMSATS Institute of Information Technology, Islamabad Campus, Park Road, Chak Shahzad, Islamabad, Pakistan
| | - Yong Li
- Institute of Soil, Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Xingmei Liu
- Institute of Soil, Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China.
| | - Jianming Xu
- Institute of Soil, Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
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