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Hereditas(Beijing) ›› 2020, Vol. 42 ›› Issue (5): 506-518.doi: 10.16288/j.yczz.20-070

• Research Article • Previous Articles    

Analysis of rice root bacterial microbiota of Nipponbare and IR24

Yali Hu1,2,3, Rui Dai2,3,4,5, Yongxin Liu2,3,4, Jingying Zhang2,3,4, Bin Hu2, Chengcai Chu2, Huaibo Yuan1(), Yang Bai2,3,4,5()   

  1. 1. School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
    2. State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
    3. CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China
    4. CAS-JIC Centre of Excellence for Plant and Microbial Science, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
    5. College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100101, China
  • Received:2020-03-15 Revised:2020-04-16 Online:2020-05-20 Published:2020-04-26
  • Contact: Yuan Huaibo,Bai Yang E-mail:yuanhuaibo001@163.com;ybai@genetics.ac.cn
  • Supported by:
    Supported by the Key Research Program of Frontier Sciences of the Chinese Academy of Science No(QYZDB-SSW-SMC021);the National Natural Science Foundation of China No(31772400)

Abstract:

The root-associated bacterial microbiota is closely related to life activities of land plants, and its composition is affected by geographic locations and plant genotypes. However, the influence of plant genotypes on root microbiota in rice grown in northern China remains to be explained. In this study, we performed 16S rRNA gene amplicon sequencing to generate bacterial community profiles of two representative rice cultivars, Nipponbare and IR24. They are planted in Changping and Shangzhuang farms in Beijing and have reached the reproductive stage. We compared their root microbiota in details by Random Forest machine learning algorithm and network analysis. We found that the diversity of rice root microbiota was significantly affected by geographic locations and rice genotypes. Nipponbare and IR24 showed distinct taxonomic composition of the root microbiota and the interactions between different bacteria. Moreover, the root bacteria could be used as biomarkers to distinguish Nipponbare from IR24 across regions. Our study provides a theoretical basis for the in-depth understanding of rice root microbiota in Northern China and the improvement of rice breeding from the perspective of the interaction between root microorganisms and plants.

Key words: rice root microbiota, diversity analysis, taxonomic composition, machine learning, network analysis