Functional genera, potential pathogens and predicted antibiotic resistance genes in 16 full-scale wastewater treatment plants treating different types of wastewater. (November 2018)

• Record Type: Journal Article
• Authors: Fan, Xiao-Yan; Gao, Jing-Feng; Pan, Kai-Ling; Li, Ding-Chang; Dai, Hui-Hui; Li, Xing
• Is Part Of: Bioresource technology. Volume 268(2018)
• Page Start: 97
• Page End: 106
• Publication Date: 2018-11
• Subjects: Bacterial community composition -- Functional genera -- Potential pathogens -- Antibiotic resistance genes -- Metal resistance genes -- Wastewater types; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2018.07.118
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Wastewater types showed obvious effects on bacterial communities and functions. Among 12 potential pathogens, Mycobacterium showed highest relative abundance. Efflux pumps were the most common resistance mechanisms for 69 predicted ARGs. ARGs/MRGs in industrial and mixed wastewater differed from municipal wastewater. ARGs were linked to MRGs, functional genera and potential pathogens in WWTPs. Abstract: 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 Accumulibacter 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.