Enantioselective effects of cyflumetofen on microbial community and related nitrogen cycle gene function in acid-soil

文献类型： 外文期刊

第一作者： Shi, Linlin

作者： Shi, Linlin;Zhang, Ping;He, Yuhan;Zeng, Fanzhan;He, Lin;Shi, Linlin;Xu, Jun;Shi, Linlin;Zhang, Ping;He, Yuhan;Zeng, Fanzhan;He, Lin;Shi, Linlin;Zhang, Ping;He, Yuhan;Zeng, Fanzhan;He, Lin

作者机构：

关键词： Cyflumetofen enantiomers; Degradation; Acid-soil; Bacteria population structure; Nitrogen cycling gene

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）

ISSN： 0048-9697

年卷期： 2021 年 771 卷

页码：

收录情况： SCI

摘要： Cyflumetofen (CYF) is a novel chiral acaricide widely used in commercial crops to control mites. The environmental risks exposed by CYF in the soil, especially at the enantiomer level, remain unclear. We found that the (+)-CYF enantiomer was preferentially degraded in acid-soil, resulting in (-)-CYF enrichment. 16S rRNA and qPCR analysis indicated that decreased bacterial abundance by 12.79-61.80% and 2.52-52.48% in (-)-CYF treatment and (+)-CYF treatment, respectively. Diversity was also decreased with (-)-CYF treatment. Interestingly, several beneficial bacteria, for instance, Alphaproteobacteria (class), Sphingomonadaceae (family), and Arthrobacter (specise) were more enriched following (-)-CYF. The abundance of N-2-fixing bacteria showed a sustained reduction with time, and the decrease was 3.24-72.94% with (-)-CYF and 25.37-73.11% with (+)-CYF treatment. Compared with the (+)-CYF treatment could positively promote nitrification, while the treatment (-)-CYF significantly reduced the abundance of amoA gene; namely it significantly negatively affected the nitrification in the nitrogen cycle. Through our further research, we found that Actinobacteria, Alphaproteobacteria, Lysobacter; Sphingomonas, Patescibacteria, Saccharimonadia, and Saccharimonadales showed synergistic effects with the nitrogen cycling-related genes nifH and amoA. These results contribute to a comprehensive environmental risk assessment of CYF in acid-soil at the enantiomer level. (C) 2020 Published by Elsevier B.V.

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