Pollution characteristics of livestock faeces and the key driver of the spread of antibiotic resistance genes
文献类型： 外文期刊
作者： Yue, Zhengfu 1 ; Zhang, Jing 1 ; Zhou, Zhigao 1 ; Ding, Changfeng 1 ; Wan, Liping 4 ; Liu, Jia 5 ; Chen, Liumeng 6 ; Wang 1 ;
作者机构： 1.Chinese Acad Sci, Inst Soil Sci, CAS Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Ecol Expt Stn Red Soil, Yingtan 335211, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Jiangxi Zhenghe Ecol Agr Co Ltd, Xinyu 338008, Peoples R China
5.Jiangxi Acad Agr Sci, Inst Soil & Fertilizer Resources & Environm, Nanchang 330200, Jiangxi, Peoples R China
6.Jiangxi Acad Agr Sci, Inst Appl Agr Microorganism, Nanchang 330200, Jiangxi, Peoples R China
关键词： Horizontal transfer; Potential hosts; Structural equation modelling; Sulphonamides; Vertical transfer
期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：10.588； 五年影响因子：10.129 ）
ISSN： 0304-3894
年卷期： 2021 年 409 卷
页码：
收录情况： SCI
摘要： The increasing prevalence of antibiotic resistance genes (ARGs) in livestock and poultry faeces has attracted considerable amounts of attention. However, in the actual breeding environment, the key driver of the spread of ARGs and which bacteria are involved remain unclear. This study investigated 19 antibiotics and 4 heavy metals in 147 animal faeces. The results showed that piglet faeces exhibited the highest levels of antibiotics and heavy metals. Twelve ARGs, 4 mobile genetic elements (MGEs) and bacterial communities of piglet faeces from 6 pig farms were further assessed to determine the key driver and relevant mechanism of the spread of ARGs. Sulphonamides (SAs) explained 36.5% of the variance (P < 0.05) of the bacterial community and were significantly related to 8 genes (P < 0.01), indicating that SAs dominated the spread of ARGs and should be tightly supervised. Structural equation modelling (SEM) indicated that SAs increased the abundance of ARGs via two pathways: horizontal transfer of ARGs (involving 10 genera) and vertical transfer of ARGs (involving 26 genera). These results improve our understanding of the potential hosts involved in the spread of ARGs, suggesting that monitoring of the above potential hosts is also important in animal feeding practice.
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