N-6-Methyladenine DNA Methylation in Japonica and Indica Rice Genomes and Its Association with Gene Expression, Plant Development, and Stress Responses

文献类型： 外文期刊

第一作者： Zhang, Qian

作者： Zhang, Qian;Cui, Xuean;Zhang, Pingxian;Liu, Jingrong;Riaz, Adeel;Lu, Tiegang;Gu, Xiaofeng;Liang, Zhe;Yu, Hao;Liang, Zhe;Yu, Hao;Ji, Changmian;Yao, Pu;Liu, Min;Zheng, Hongkun;Li, Yun;Yang, Donglei;Wang, Yunpeng

作者机构：

关键词： N-6-methyladenine; 6mA; DNA methylation; Methylome; Oryza sativa; Stress

期刊名称：MOLECULAR PLANT （ 影响因子：13.164； 五年影响因子：16.357 ）

ISSN： 1674-2052

年卷期： 2018 年 11 卷 12 期

页码：

收录情况： SCI

摘要： N-6-Methyladenine (6mA) DNA methylation has recently been implicated as a potential new epigenetic marker in eukaryotes, including the dicot model Arabidopsis thaliana. However, the conservation and divergence of 6mA distribution patterns and functions in plants remain elusive. Here we report high-quality 6mA methylomes at single-nucleotide resolution in rice based on substantially improved genome sequences of two rice cultivars, Nipponbare (Nip; Japonica) and 93-11 (Indica). Analysis of 6mA genomic distribution and its association with transcription suggest that 6mA distribution and function is rather conserved between rice and Arabidopsis. We found that 6mA levels are positively correlated with the expression of key stress-related genes, which may be responsible for the difference in stress tolerance between Nip and 93-11. Moreover, we showed that mutations in DDM1 cause defects in plant growth and decreased 6mA level. Our results reveal that 6mA is a conserved DNA modification that is positively associated with gene expression and contributes to key agronomic traits in plants.

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