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Distribution of antibiotic resistance genes and their association with bacteria and viruses in decentralized sewage treatment facilities 被引量:3
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作者 Jiaheng Zhao Bing Li +3 位作者 Pin Lv Jiahui Hou Yong Qiu Xia Huang 《Frontiers of Environmental Science & Engineering》 SCIE EI CSCD 2022年第3期91-104,共14页
The distribution of antibiotic resistance genes(ARGs)has been intensively studied in large-scale wastewater treatment plants and livestock sources.However,small-scale decentralized sewage treatment facilities must als... The distribution of antibiotic resistance genes(ARGs)has been intensively studied in large-scale wastewater treatment plants and livestock sources.However,small-scale decentralized sewage treatment facilities must also be explored due to their possible direct exposure to residents.In this study,six wastewater treatment facilities in developed rural areas in eastern China were investigated to understand their risks of spreading ARGs.Using metagenomics and network analysis tools,ARGs and bacterial and viral communities were identified in the influent(INF)and effluent(EFF)samples.The dominant ARGs belonged to the bacitracin class,which are different from most of municipal wastewater treatment plants(WWTPs).The dominant hosts of ARGs are Acidovorax in bacterial communities and Prymnesiovirus in viral communities.Furthermore,a positive relationship was found between ARGs and phages.The ARGs significantly correlated with phages were all hosted by specific genera of bacteria,indicating that phages had contributed to the ARG’s proliferation in sewage treatment facilities.Paying significant concern on the possible enhanced risks caused by bacteria,viruses and their related ARGs in decentralized sewage treatment facilities is necessary. 展开更多
关键词 Decentralized sewage treatment facilities Antibiotic resistance genes VIRUS METAGENOMICS Network analysis
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