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The role of substrate types and substrate microbial community on the fate of antibiotic resistance genes during anaerobic digestion
Zhang, Junya; Lu, Tiedong; Shen, Peihong; Sui, Qianwen; Zhong, Hui; Liu, Jibao; Tong, Juan; Wei, Yuansong
2019-08-01
Source PublicationCHEMOSPHERE
ISSN0045-6535
Volume229Pages:461-470
AbstractAnaerobic digestion (AD) is regarded as a promising technology in energy recovery and the spread mitigation of antibiotic resistance. However, the performance of AD is dependent on various factors, and substrate type is one of the most important. In this study, the fate of antibiotic resistance genes (ARGs) response to the substrate types was investigated, and three typical environmental reservoirs of ARGs (pig manure, chicken manure and sewage sludge) were selected. The role of substrate microbial community on the fate of ARGs was clarified through the comparison between the AD of the substrates with and without a prior autoclave-disinfected step. Results showed that substrate types significantly influenced the fate of ARGs, while the influence from the substrate microbial community was limited. The concentration of antibiotics, the horizontal gene transfer reflected by intl1 and co-selection from heavy metals reflected by metal resistance genes (MRGs) were all reduced effectively. Microbial community varied from substrate types and dominated the ARGs fate concerning the standardized total effects through the mantel test and SEM analysis. The fate of tetX, ermF, tetM and ermB was mainly determined by the physicochemical parameters and the phyla of Firmicutes and Bacteroides. The phyla of Actinobacteria, pcoA and czcA contributed most to the reduction of bla(TEm) and mcr-1, and the phyla of Proteobacteria, Chloroflexi, Synergistetes, Euryarchaeote, intl1 and merA correlated significantly with the fate of bla(CTX-M), ereA, tetG and sull. This study highlighted the importance of substrate types when considering the fate of ARGs during AD. (C) 2019 Elsevier Ltd. All rights reserved.
Department水污染控制实验室
KeywordAntibiotic resistance genes Anaerobic digestion Substrate types Substrate microbial community Antibiotics
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/43285
Collection水污染控制实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Dept Water Pollut Control Technol, Beijing 100085, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Junya,Lu, Tiedong,Shen, Peihong,et al. The role of substrate types and substrate microbial community on the fate of antibiotic resistance genes during anaerobic digestion[J]. CHEMOSPHERE,2019,229:461-470.
APA Zhang, Junya.,Lu, Tiedong.,Shen, Peihong.,Sui, Qianwen.,Zhong, Hui.,...&Wei, Yuansong.(2019).The role of substrate types and substrate microbial community on the fate of antibiotic resistance genes during anaerobic digestion.CHEMOSPHERE,229,461-470.
MLA Zhang, Junya,et al."The role of substrate types and substrate microbial community on the fate of antibiotic resistance genes during anaerobic digestion".CHEMOSPHERE 229(2019):461-470.
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