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The Effects of Microbial Inoculants on Bacterial Communities of the Rhizosphere Soil of Maize

文献类型： 外文期刊

作者： Shen, Minchong 1 ; Li, Jiangang 1 ; Dong, Yuanhua 1 ; Zhang, Zhengkun 3 ; Zhao, Yu 3 ; Li, Qiyun 3 ; Dang, Keke 1 ; Peng, 1 ;

作者机构： 1.Chinese Acad Sci, CAS Key Lab Soil Environm & Pollut Remediat, Inst Soil Sci, Nanjing 210008, Peoples R China

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

3.Jilin Acad Agr Sci, Minist Agr & Rural Affairs, Key Lab Integrated Pest Management Crops Northeas, Jilin Key Lab Agr Microbiol, Changchun 130033, Peoples R China

关键词： microbial inoculant; diversity; key phylotype; rhizosphere soil of maize; sustainable agriculture; bacterial communities' structure; microbial functional diversity

期刊名称：AGRICULTURE-BASEL （ 影响因子：2.925； 五年影响因子：3.044 ）

ISSN：

年卷期： 2021 年 11 卷 5 期

页码：

收录情况： SCI

摘要： The bacterial community of rhizosphere soil maintains soil properties, regulates the microbiome, improves productivity, and sustains agriculture. However, the structure and function of bacterial communities have been interrupted or destroyed by unreasonable agricultural practices, especially the excessive use of chemical fertilizers. Microbial inoculants, regarded as harmless, effective, and environmentally friendly amendments, are receiving more attention. Herein, the effects of three microbial inoculants, inoculant M and two commercial inoculants (A and S), on bacterial communities of maize rhizosphere soil under three nitrogen application rates were compared. Bacterial communities treated with the inoculants were different from those of the non-inoculant control. The OTU (operational taxonomic unit) numbers and alpha diversity indices were decreased by three inoculants, except for the application of inoculant M in CF group. Beta diversity showed the different structures of bacterial communities changed by three inoculants compared with control. Furthermore, key phylotypes analyses exhibited the differences of biomarkers between different treatments visually. Overall, inoculant M had shared and unique abilities of regulating bacterial communities compared with the other two inoculants by increasing potentially beneficial bacteria and decreasing the negative. This work provides a theoretical basis for the application of microbial inoculants in sustainable agriculture.

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