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Effects of endogenous inhibitors on the evolution of antibiotic resistance genes during high solid anaerobic digestion of swine manure

Sui, Qianwen ; Meng, Xiaoshan ; Wang, Rui ; Zhang, Junya ; Yu, Dawei ; Chen, Meixue ; Wang, Yawei ; Wei, Yuansong

Bioresource Technology, 12/2018, Vol.270, C, pp.328-336 [Tạp chí có phản biện]

ISSN: 09608524 ; DOI: http://dx.doi.org/10.1016/j.biortech.2018.09.043

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  • Nhan đề:
    Effects of endogenous inhibitors on the evolution of antibiotic resistance genes during high solid anaerobic digestion of swine manure
  • Tác giả: Sui, Qianwen ; Meng, Xiaoshan ; Wang, Rui ; Zhang, Junya ; Yu, Dawei ; Chen, Meixue ; Wang, Yawei ; Wei, Yuansong
  • Chủ đề: Genetic Research – Analysis ; Fatty Acids – Analysis ; Genes – Analysis ; Microbial Drug Resistance – Analysis
  • Là 1 phần của: Bioresource Technology, 12/2018, Vol.270, C, pp.328-336
  • Mô tả: Keywords Antibiotic resistance gene; High solid anaerobic digestion; Antibiotics; Swine manure; Endogenous inhibitor Highlights * The ARG properties during the HSAD largely differed with the low TS treatment. * The shifts of ARGs were divided into three phases. * VFAs, Proteobacteria and intI1 gave rise to the ARG increment. * FA inhibition and VFA accumulation delayed and restricted the decline of ARGs. * Relatively long duration of ARG changes and high ARGs in the end product of HSAD. Abstract Livestock manure is a reservoir of antibiotic resistance genes (ARGs). The endogenous inhibitors that emerge during high solid anaerobic digestion (HSAD) greatly influence the bioprocess performance and the ARGs. The effect of endogenous inhibitors including volatile fatty acids (VFAs) and free ammonia (FA) on the ARG occurrences during HSAD of swine manure was investigated in this study. The ARG properties during HSAD (8%--14% total solids (TS)) largely differed from the low TS control (4%). The endogenous inhibitors and microbial communities greatly contributed to the three-phase changes in ARGs. The concentrations of VFAs and abundances of Proteobacteria and intI1 were correlated with the changes in ARGs. FA inhibition and VFA accumulation (especially propionate) delayed and restricted the decline of ARGs. The relatively slow rate of changes in ARGs and high ARGs in the end product suggested the high risk of the HSAD digestate for land application. Author Affiliation: (a) State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China (b) Department of Water Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China (c) University of Chinese Academy of Sciences, Beijing 100049, China (d) School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China * Corresponding author at: Department of Water Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. Article History: Received 10 July 2018; Revised 7 September 2018; Accepted 9 September 2018 (footnote)1 Qianwen Sui and Xiaoshan Meng contributed equally to this work. Byline: Qianwen Sui (a,b,1), Xiaoshan Meng (a,b,d,1), Rui Wang (a,b), Junya Zhang (a,b), Dawei Yu (a,b), Meixue Chen (a,b), Yawei Wang (a,b), Yuansong Wei [yswei@rcees.ac.cn] (a,b,c,*)
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 09608524 ; DOI: http://dx.doi.org/10.1016/j.biortech.2018.09.043

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