Mobile genetic elements in potential host microorganisms are the key hindrance for the removal of antibiotic resistance genes in industrial-scale composting with municipal solid waste
| Autor: | Xinyu Zhao, Beidou Xi, Xia Xiangqin, Wenxuan Li, Caihong Huang, Kexin Liu, Wenbing Tan, Zhurui Tang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Environmental Engineering Municipal solid waste Firmicutes Microorganism Bioengineering 010501 environmental sciences Biology Solid Waste complex mixtures 01 natural sciences Actinobacteria 010608 biotechnology Waste Management and Disposal 0105 earth and related environmental sciences Renewable Energy Sustainability and the Environment business.industry Host (biology) Composting fungi Drug Resistance Microbial General Medicine biology.organism_classification Anti-Bacterial Agents Biotechnology Interspersed Repetitive Sequences Manure Microbial population biology Genes Bacterial Mobile genetic elements business Bacteria |
| Zdroj: | Bioresource Technology. 301:122723 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2019.122723 |
| Popis: | During the municipal solid waste (MSW) composting, antibiotic resistance genes (ARGs) could be one of the concerns to hinder the application of MSW composting. However, the understanding of enrichment and dissemination of ARGs during the industrial-scale composting is still not clear. Hence, this study aimed to investigate the ARG distributions at different stages in an industrial-scale MSW composting plant. Seven target ARGs and four target mobile genetic elements (MGEs) and bacterial communities were investigated. The abundances of ARGs and MGEs increased during two aerobic thermophilic stages, but they decreased in most ARGs and MGEs after composting. Network analysis showed that potential host bacteria of ARGs were mainly Firmicutes and Actinobacteria. The reduction of potential host bacteria was important to remove ARGs. MGEs were an important factor hindering ARG removal. Water-extractable S and pH were two main physicochemical factors in the changes of microbial community and the abundance of ARGs. |
| Databáze: | OpenAIRE |
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