期刊
BIORESOURCE TECHNOLOGY
卷 268, 期 -, 页码 97-106出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.07.118
关键词
Bacterial community composition; Functional genera; Potential pathogens; Antibiotic resistance genes; Metal resistance; Wastewater types
资金
- National Natural Science Foundation of China [51578015]
- Beijing Natural Science Foundation [8162010]
- National Science and Technology Major Project [2017ZX07103-003]
- China Postdoctoral Science Foundation [2017M620563]
This study aimed to investigate the bacterial communities and antibiotic resistance genes (ARGs) in 16 wastewater treatment plants (WWTPs) treating municipal, industrial and mixed wastewater. Wastewater types showed obvious effects on bacterial communities and functions. Nitrosomonas, Nitrospira, Hyphomicrobium and Accunudibacter were the main functional genera. Mycobacterium was the dominant potential pathogens. A total of 69 ARGs were obtained, and the dominant ARGs subtypes were similar in different WWTPs. Efflux pumps were the most common resistance mechanisms. Copper and zinc resistance genes were the main metal resistance genes (MRGs). Wastewater types affected the distributions of ARGs and MRGs, and they were more similar in industrial and mixed wastewater. The co-occurrence of ARGs existed within or across ARG types, and they were also positively linked to MRGs, some functional and pathogenic genera or environmental factors. This study furthers the understanding of interactions between bacterial communities, ARGs and MRGs in different WWTPs.
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