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Author:

Li, Dingchang (Li, Dingchang.) | Gao, Jingfeng (Gao, Jingfeng.) (Scholars:高景峰) | Dai, Huihui (Dai, Huihui.) | Duan, Wanjun (Duan, Wanjun.) | Wang, Zhiqi (Wang, Zhiqi.) | Zhou, Zhixiang (Zhou, Zhixiang.) (Scholars:周志祥)

Indexed by:

EI Scopus SCIE

Abstract:

Antibiotic resistance genes (ARGs) were considered as emerging genetic contaminants, which were threatening public health worldwide. ARGs had two forms of existence: intracellular ARGs (i-ARGs) and extracellular ARGs (e-ARGs), and their emergence and spread patterns were rarely revealed in aerobic granular sludge (AGS) system. The results showed that both i-ARGs and e-ARGs were enriched but had different shift patterns during AGS cultivation process, and e-ARGs had higher growth rate. Most functional bacteria enriched in AGS might play important roles in accumulating of i/e-ARGs, and their oligotypes might be the key reason for the different correlations between taxa and i/e-ARGs. E-ARGs might be transformed from i-ARGs and mainly carried by eintegrons, and three major modules of co-occurrence among e-ARGs were observed. The combined action of environmental factors and bacterial community contributed most (35.43%) to the shift pattern of e-ARGs. This study deciphered the migrations and accumulations of i/e-ARGs during aerobic granulation process, and provided several meaningful comprehensions on i/e-ARGs dissemination during practical AGS application.

Keyword:

I Aerobic granulation process Oligotypes Functional bacteria e-antibiotic resistance genes Co-occurrence modules

Author Community:

  • [ 1 ] [Li, Dingchang]Beijing Univ Technol, Fac Environm & Life, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China
  • [ 2 ] [Gao, Jingfeng]Beijing Univ Technol, Fac Environm & Life, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China
  • [ 3 ] [Dai, Huihui]Beijing Univ Technol, Fac Environm & Life, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China
  • [ 4 ] [Duan, Wanjun]Beijing Univ Technol, Fac Environm & Life, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China
  • [ 5 ] [Wang, Zhiqi]Beijing Univ Technol, Fac Environm & Life, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China
  • [ 6 ] [Zhou, Zhixiang]Beijing Univ Technol, Fac Environm & Life, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China

Reprint Author's Address:

  • 高景峰

    [Gao, Jingfeng]Beijing Univ Technol, Fac Environm & Life, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China

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Source :

CHEMICAL ENGINEERING JOURNAL

ISSN: 1385-8947

Year: 2021

Volume: 421

1 5 . 1 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:87

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 24

SCOPUS Cited Count: 25

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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