Removal of antibiotic resistance genes in pig manure composting influenced by inoculation of compound microbial agents

被引：43

作者：

Cao, Rukun ^{[1
]}

Ben, Weiwei ^{[1
]}

Qiang, Zhimin ^{[1
]}

Zhang, Junya ^{[2
]}

机构：

[1] Univ Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Chinese Acad Sci, Key Lab Drinking Water Sci & Technol, 18 Shuang Qing Rd, Beijing 100085, Peoples R China

[2] Univ Chinese Acad Sci, State Key Joint Lab Environm Simulat & Pollut Con, Dept Water Pollut Control Technol, Res Ctr Ecoenvironm Sci,Chinese Acad Sci, 18 Shuang Qing Rd, Beijing 100085, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2020年 / 317卷

基金：

中国国家自然科学基金;

关键词：

Antibiotic resistance gene (ARG); Composting; Compound microbial agent; Mobile genetic element (MGE); Bacterial community; FATE; COMMUNITY; DISSEMINATION; TETRACYCLINE; SULFONAMIDE; MECHANISMS; DIVERSITY; INTEGRONS;

D O I：

10.1016/j.biortech.2020.123966

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The influence of compound microbial agents on antibiotic resistance genes (ARGs) in pig manure composting was investigated. The results show that the addition of microbial agents promoted the reduction of total ARGs and the maximum removal efficiencies for absolute abundance (77.2%) and relative abundance (64.5%) were observed in the repeated dose and high dose groups, respectively. Four categories of ARGs declined with the reduction of Firmicutes and Tn916/1545, whereas two categories increased with the proliferation of intl1 and various potential hosts in the composting. The ARG profiles and bacterial communities were shaped by composting stages (mesophilic-thermophilic and cooling-maturation stages) in all groups. However, the addition of microbial agents accelerated the variation of composting stages, and may change the potential ARG hosts which influences the removal of ARGs. Of note, intl1 and two potential pathogens (Mycobacterium and Bacillus) correlated positively to several increased ARGs, implying the possible risks of compost products.

引用

页数：9

共 38 条

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