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Disturbance mitigation of thiencarbazone-methyl•isoxaflutole on bacterial communities through nitrification inhibitor and attapulgite

文献类型： 外文期刊

作者： Wang, Yonglu 1 ; Zhang, Fengsong 1 ; Liao, Xiaoyong 1 ; Yang, Xiao 1 ; Zhang, Guixiang 3 ; Zhang, Liyun 4 ; Wei, Chaojun 4 ; Shi, Pengge 4 ; Wen, Jiongxin 3 ; Ju, Xiaorong 3 ; Xu, Can 3 ; Liu, Yang 5 ; Lan, Ying 5 ;

作者机构： 1.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China

2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

3.Taiyuan Univ Sci & Technol, Sch Environm & Resources, Taiyuan 030024, Shanxi, Peoples R China

4.Beijing Univ Agr, Minist Agr & Rural Affairs, Key Lab Northern Urban Agr, Beijing 102206, Peoples R China

5.Heilongjiang Acad Agr Sci, Qiqihar Branch, Qiqihar 161006, Heilongjiang, Peoples R China

关键词： Maize production; Black soil; Herbicides; Toxic effects; Soil microflora

期刊名称：ENVIRONMENTAL POLLUTION （ 影响因子：8.9； 五年影响因子：9.5 ）

ISSN： 0269-7491

年卷期： 2024 年 340 卷

页码：

收录情况： SCI

摘要： There is a knowledge gap in the interaction between the effects of herbicide thiencarbazone-methyl center dot isoxaflutole on soil microflora and environmental parameters, which leads to a lack of measures in mitigating damage to bacterial communities from the herbicide use. The impacts of thiencarbazone-methyl center dot isoxaflutole and soil pa-rameters on the diversity, structure and functions of soil bacterial communities were clarified, and the effects and potential mitigation mechanisms of nitrapyrin and modified attapulgite with bacterial function intervention on bacterial communities were explored through incubation and field experiments. The results showed that as thiencarbazone-methyl center dot isoxaflutole application increased, the stress on soil bacterial community structure and diversity also increased. The relative abundance of bacteria including Aridibacter and GP7 and functional an-notations including "nitrate_reduction" were significantly negatively correlated with thiencarbazone-methyl-center dot isoxaflutole residues in soils. The remarkable toxic effects on the Adhaeribacter bacteria were detected at the recommended dose of thiencarbazone-methyl center dot isoxaflutole application. The residue of isoxaflutole (one of the effective ingredients of thiencarbazone-methyl center dot isoxaflutole) directly and more strongly affected the diversity of soil bacterial communities than thiencarbazone-methyl. Increasing soil pH was recognised as an important factor in improving the diversity and structure of soil microflora based on the results of the Mantel test and canonical correspondence analysis. Supplemental use of nitrapyrin or modified attapulgite was found to increase soil pH, and further improve the expression of "manganese oxidation" function annotation. This contributed to the increased bacterial diversity (Shannon index). Therefore, the disturbance of soil microflora caused by thien-carbazone-methyl center dot isoxaflutole application can be mitigated by the use of nitrapyrin and modified attapulgite through raising soil pH.

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