数字农科院2.0

Response Of Soil Bacterial And Fungal Community Structure Succession To Earthworm Addition For Bioremediation Of Metolachlor

文献类型： 外文期刊

作者： Sun, Y; Zhao, LX; Li, XJ; Xu, HJ; Weng, LP; Yang, LJ; Li, YT

作者机构：

关键词： Metolachlor; Eisenia Fetida; Detoxification; Microbial Composition; Correlation Succession

期刊名称： ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY

ISSN： 0147-6513

年卷期： 2020 年 189 卷

页码：

收录情况： JCR（2021版）

摘要： Synergistic biodegradation of earthworms and soil microorganisms plays a key role in the removal of organic pollutants in soil, yet microbially mediated processes remain unclear, especially regarding the succession of soil microbial interactions. Herein, soil biochemical evaluation, microbial community characterization, and interaction network construction were combined to understand the mechanisms dominating microbial community succession during synergistic bioremediation of metolachlor-polluted soils. The results of the network analysis indicated that metolachlor could render more complex relations but weaker connection strength among soil microorganisms. The addition of earthworms significantly alleviated the stress of metolachlor on soil microbial interactions and resulted in the restoration of interactions to a great extent. Additionally, the soil physicochemical properties, enzyme activities, and microbial community changed greatly with the addition of metolachlor and earthworms. Some soil microorganisms became significantly correlated with soil properties, metolachlor concentrations, and enzyme activities. These results, dominated by the succession of soil microbial communities, provide a new perspective for assessing the remediation effect of contaminated soil by organic pollutants.

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