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

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  • Minchong Shen

    (CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Jiangang Li

    (CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China)

  • Yuanhua Dong

    (CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China)

  • Zhengkun Zhang

    (Jilin Key Laboratory of Agricultural Microbiology, Key Laboratory of Integrated Pest Management on Crops in Northeast China, Ministry of Agriculture and Rural Affairs, Jilin Academy of Agricultural Sciences, Changchun 130033, China)

  • Yu Zhao

    (Jilin Key Laboratory of Agricultural Microbiology, Key Laboratory of Integrated Pest Management on Crops in Northeast China, Ministry of Agriculture and Rural Affairs, Jilin Academy of Agricultural Sciences, Changchun 130033, China)

  • Qiyun Li

    (Jilin Key Laboratory of Agricultural Microbiology, Key Laboratory of Integrated Pest Management on Crops in Northeast China, Ministry of Agriculture and Rural Affairs, Jilin Academy of Agricultural Sciences, Changchun 130033, China)

  • Keke Dang

    (CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Junwei Peng

    (CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Hong Liu

    (CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

Abstract

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.

Suggested Citation

  • Minchong Shen & Jiangang Li & Yuanhua Dong & Zhengkun Zhang & Yu Zhao & Qiyun Li & Keke Dang & Junwei Peng & Hong Liu, 2021. "The Effects of Microbial Inoculants on Bacterial Communities of the Rhizosphere Soil of Maize," Agriculture, MDPI, vol. 11(5), pages 1-18, April.
    • Handle: RePEc:gam:jagris:v:11:y:2021:i:5:p:389-:d:543262
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    References listed on IDEAS

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    1. Allen G Good & Perrin H Beatty, 2011. "Fertilizing Nature: A Tragedy of Excess in the Commons," Working Papers id:4387, eSocialSciences.
    2. Allen G Good & Perrin H Beatty, 2011. "Fertilizing Nature: A Tragedy of Excess in the Commons," PLOS Biology, Public Library of Science, vol. 9(8), pages 1-9, August.
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