Lignite as additives accelerates the removal of antibiotic resistance genes during poultry litter composting

文献类型： 外文期刊

第一作者： Cao, Yun

作者： Cao, Yun;Hu, Hang-Wei;Butterly, Clayton;Bai, Mei;Chen, Deli;He, Ji-Zheng;Cao, Yun;Cao, Yun;Hu, Hang-Wei;He, Ji-Zheng;Guo, Hai-Gang;Zhang, Yu-Shu

作者机构：

关键词： Antibiotic resistance gene; Bacterial community; Mobile genetic element; Lignite; Composting

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）

ISSN： 0960-8524

年卷期： 2020 年 315 卷

页码：

收录情况： SCI

摘要： Antibiotic resistance genes (ARGs) in animal manure are a great threat to human health. This study investigated the effects of lignite addition at three levels (5%, 10%, 15% w/w) on the profiles of ARGs and the bacterial communities during poultry litter composting. Lignite addition effectively promoted the removal of manureborne ARGs. After 65 days of composting, the relative abundances of ARGs decreased by 8.9% in control (no lignite), and by 15.8%, 27.7% and 41.5% in 5%, 10% and 15% lignite treatments, respectively. Although the total mobile genetic elements were enriched after composting, the enrichment of the intI-1 gene was significantly lower in the 10% and 15% lignite treatments compared with control. Network analysis indicated that Actinobacteria and Firmicutes were potential bacterial hosts for ARGs. Redundancy analysis showed that bacterial community succession played a key role in the shifts of ARGs. Taken together, this study provides evidence that lignite as additives promoted the removal efficacy of ARGs during composting of poultry litter.

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