Biodegradation of tylosin in swine wastewater by Providencia stuartii TYL-Y13: Performance, pathway, genetic background, and risk assessment

Microbial bioremediation offers a solution to the problem of residual antibiotics in wastewater associated with animal farms. Efficient degradation of antibiotic residues depends upon the genetic make-up of microbial degraders, which requires a comprehensive understanding of the degradation mechanis...

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Veröffentlicht in:Journal of hazardous materials 2022-10, Vol.440, p.129716-129716, Article 129716
Hauptverfasser: Yang, Jian, Zhao, Zhuo-qun, Wang, Min, Yu, Ke-fei, Zhang, Tao, Lin, Hui, Zheng, Hua-bao
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container_end_page 129716
container_issue
container_start_page 129716
container_title Journal of hazardous materials
container_volume 440
creator Yang, Jian
Zhao, Zhuo-qun
Wang, Min
Yu, Ke-fei
Zhang, Tao
Lin, Hui
Zheng, Hua-bao
description Microbial bioremediation offers a solution to the problem of residual antibiotics in wastewater associated with animal farms. Efficient degradation of antibiotic residues depends upon the genetic make-up of microbial degraders, which requires a comprehensive understanding of the degradation mechanisms. In this study, a novel, efficient tylosin (TYL)-degrading bacterium, Providencia stuartii TYL-Y13 (Y13) was isolated, which could completely degrade 100 mg/L TYL within 15 h under optimal operating conditions at 40 ℃, pH 7.0 %, and 1 % (v/v) bacterial inoculation rate. Whole genome sequencing revealed that strain Y13 consists of a circular chromosome and two plasmids. A new biodegradation pathway of TYL including desugarification, hydrolysis, and reduction reactions was proposed through the analysis of biodegradation products. It was demonstrated that strain Y13 gradually decreased the biotoxicity of TYL and its metabolites based on the results of the ecological structural activity relationships (ECOSAR) model analysis and toxicity assessment. Moreover, Y13 promoted the reduction of the target macrolide resistance genes in wastewater and disappeared within 84 h. These results shed new light on the mechanism of TYL biodegradation and better utilization of microbes to remediate TYL contamination. [Display omitted] •A novel bacterial strain (Y13) for tylosin (TYL) degradation is isolated.•Strain Y13 completely degrades TYL within 15 h.•Identification of intermediates and deduction of a new TYL biodegradation pathway.•Genome and resistance genes of strain Y13 are characterized.•Strain Y13 reduces resistance genes in swine wastewater.
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Efficient degradation of antibiotic residues depends upon the genetic make-up of microbial degraders, which requires a comprehensive understanding of the degradation mechanisms. In this study, a novel, efficient tylosin (TYL)-degrading bacterium, Providencia stuartii TYL-Y13 (Y13) was isolated, which could completely degrade 100 mg/L TYL within 15 h under optimal operating conditions at 40 ℃, pH 7.0 %, and 1 % (v/v) bacterial inoculation rate. Whole genome sequencing revealed that strain Y13 consists of a circular chromosome and two plasmids. A new biodegradation pathway of TYL including desugarification, hydrolysis, and reduction reactions was proposed through the analysis of biodegradation products. It was demonstrated that strain Y13 gradually decreased the biotoxicity of TYL and its metabolites based on the results of the ecological structural activity relationships (ECOSAR) model analysis and toxicity assessment. 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[Display omitted] •A novel bacterial strain (Y13) for tylosin (TYL) degradation is isolated.•Strain Y13 completely degrades TYL within 15 h.•Identification of intermediates and deduction of a new TYL biodegradation pathway.•Genome and resistance genes of strain Y13 are characterized.•Strain Y13 reduces resistance genes in swine wastewater.</description><identifier>ISSN: 0304-3894</identifier><identifier>EISSN: 1873-3336</identifier><identifier>DOI: 10.1016/j.jhazmat.2022.129716</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>ARGs ; Biodegradation ; Degradation pathway ; Swine wastewater</subject><ispartof>Journal of hazardous materials, 2022-10, Vol.440, p.129716-129716, Article 129716</ispartof><rights>2022 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c342t-f5cd7c3851d8353f13364961e752a04cecc1ce2bd8b25d1c5a08095a8d438b303</citedby><cites>FETCH-LOGICAL-c342t-f5cd7c3851d8353f13364961e752a04cecc1ce2bd8b25d1c5a08095a8d438b303</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jhazmat.2022.129716$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Yang, Jian</creatorcontrib><creatorcontrib>Zhao, Zhuo-qun</creatorcontrib><creatorcontrib>Wang, Min</creatorcontrib><creatorcontrib>Yu, Ke-fei</creatorcontrib><creatorcontrib>Zhang, Tao</creatorcontrib><creatorcontrib>Lin, Hui</creatorcontrib><creatorcontrib>Zheng, Hua-bao</creatorcontrib><title>Biodegradation of tylosin in swine wastewater by Providencia stuartii TYL-Y13: Performance, pathway, genetic background, and risk assessment</title><title>Journal of hazardous materials</title><description>Microbial bioremediation offers a solution to the problem of residual antibiotics in wastewater associated with animal farms. 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Efficient degradation of antibiotic residues depends upon the genetic make-up of microbial degraders, which requires a comprehensive understanding of the degradation mechanisms. In this study, a novel, efficient tylosin (TYL)-degrading bacterium, Providencia stuartii TYL-Y13 (Y13) was isolated, which could completely degrade 100 mg/L TYL within 15 h under optimal operating conditions at 40 ℃, pH 7.0 %, and 1 % (v/v) bacterial inoculation rate. Whole genome sequencing revealed that strain Y13 consists of a circular chromosome and two plasmids. A new biodegradation pathway of TYL including desugarification, hydrolysis, and reduction reactions was proposed through the analysis of biodegradation products. It was demonstrated that strain Y13 gradually decreased the biotoxicity of TYL and its metabolites based on the results of the ecological structural activity relationships (ECOSAR) model analysis and toxicity assessment. 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subjects ARGs
Biodegradation
Degradation pathway
Swine wastewater
title Biodegradation of tylosin in swine wastewater by Providencia stuartii TYL-Y13: Performance, pathway, genetic background, and risk assessment
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