Rui Dai
Haoran Xu
Yongxin Liu
Bo Bai
Ying Meng
Haiyan Li
Xiaofeng Cao
Yang Bai
Xianwei Song
Jingying Zhang
a. College of Life Sciences, Engineering Research Center of the Chinese Ministry of Education for Bioreactor and Pharmaceutical Development, Jilin Agricultural University, Changchun, Jilin 130118, China;
b. State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China;
c. CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing 100049, China;
d. CAS-JIC Centre of Excellence for Plant and Microbial Science, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China;
e. College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
f. Shandong Rice Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China;
g. Institute of Farming and Cultivation, Heilongjiang Provincial Academy of Agricultural Sciences, Harbin 150086, China;
h. Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Beijing 100101, China;
i. INASEED, Chinese Academy of Sciences, Beijing 100101, China
Funds: 31801945 to J.Z.), and the Youth Innovation Promotion Association CAS (2020101 to J.Z.
QYZDY-SSW-SMC022 to X.C.), the National Natural Science Foundation of China (31788103 to X.C.
2021092 to Y.L.).
XDB27030201 to X.C.), the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (QYZDB-SSW-SMC021 to Y.B.
This work was supported by grants from the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA24020104 to Y.B.
Received Date: 2021-06-09
Accepted Date:2021-06-20
Rev Recd Date:2021-06-20
Publish Date:2021-07-02
Abstract
Abstract
Plants have a close relationship with their root microbiota, which comprises a complex microbial network. Histone methylation is an important epigenetic modification influencing multiple plant traits; however, little is known about the role of plant histone methylation in the assembly and network structure of the root microbiota. In this study, we established that the rice (Oryza sativa) histone methylation regulates the structure and composition of the root microbiota, especially the hub species in the microbial network. DJ-jmj703 (defective in histone H3K4 demethylation) and ZH11-sdg714 (defective in H3K9 methylation) showed significant different root microbiota compared with the corresponding wild types at the phylum and family levels, with a consistent increase in the abundance of Betaproteobacteria and a decrease in the Firmicutes. In the root microbial network, 35 of 44 hub species in the top 10 modules in the tested field were regulated by at least one histone methylation-related gene. These observations establish that the rice histone methylation plays a pivotal role in regulating the assembly of the root microbiota, providing insights into the links between plant epigenetic regulation and root microbiota.Keywords: Histone methylation,
Root microbiota,
Hub species,
Co-occurrence network,
Rice,
Epigenetics
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