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Biochar alleviated the toxicity of atrazine to soybeans, as revealed by soil microbial community and the assembly process

文献类型： 外文期刊

作者： Huang, Xiaowei 1 ; Yang, Xueling 1 ; Lin, Jiahui 1 ; Franks, Ashely E. 2 ; Cheng, Jie 1 ; Zhu, Yanjie 1 ; Shi, Jiachun 1 ; Xu, Jianming 1 ; Yuan, Ming 2 ; Fu, Xujun 6 ; He, Yan 1 ;

作者机构： 1.Zhejiang Univ, Inst Soil & Water Resources & Environm Sci, Coll Environm & Resource Sci, Hangzhou 310058, Peoples R China

2.Zhejiang Prov Key Lab Agr Resources & Environm, Hangzhou 310058, Peoples R China

3.La Trobe Univ, Dept Physiol Anat & Microbiol, Melbourne Campus, Bundoora, Vic 3086, Australia

4.La Trobe Univ, Ctr Future Landscapes, Melbourne Campus, Bundoora, Vic 3086, Australia

5.Heilongjiang Acad Agr Sci, Qiqihar Branch, Qiqihar 161000, Peoples R China

6.Inst Crop & Nucl Technol, Zhejiang Acad Agr Sci, Hangzhou 310000, Peoples R China

关键词： Atrazine; Biochar; Microbial assembly process; Microbial community; Soybean

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：10.753； 五年影响因子：10.237 ）

ISSN： 0048-9697

年卷期： 2022 年 834 卷

页码：

收录情况： SCI

摘要： Atrazine has a detrimental effect on soybean growth in corn-soybean rotation systems. A knowledge gap exists regarding how rhizosphere microbial interactions respond to atrazine stress, and specifically, whether they may alleviate the detriment of atrazine on soybeans, this serving as a target to alleviate the adverse impact. Biochar are widely used for remediation in herbicide contamination soil, however, little is known about how biochar fuels the microbiomes in rhizosphere to improve soybean performance. We investigated the response of the microbial community to atrazine stress with and without biochar application to soybean cultivation in a greenhouse experiment. Atrazine had detrimental effects on soybeans and nodules, reshaping the microbial community in both the bulk and rhizosphere soil. Biochar application was able to ameliorate atrazine effects on soybean and nodule activity, with an increase in competition among microbes in the soybean rhizosphere soils. Biochar favored the probiotics such as the bacteria Lysobacter, Paenarthrobacter, and Sediminibacterium in the rhizosphere soils. The relative abundance of Lysobacter exhibited strong-negative correlations with potential pathogens. Elastic net regression with bioindicators and environmental factors accurately predicted the residual content of atrazine in soil. Collectively, our results provide a practical strategy of using biochar to improve soil quality for corn-soybean rotation that is contaminated with residual atrazine. Overall, beneficial plant microbes and changes in microbial interactions and assembly processes in the soybean rhizosphere are capable of alleviating atrazine stress on soybean growth.

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