数字农科院2.0

Global N6-Methyladenosine Profiling Revealed the Tissue-Specific Epitranscriptomic Regulation of Rice Responses to Salt Stress

文献类型： 外文期刊

作者： Yinxiao Wang;Fengping Du;Yingbo Li;Juan Wang;Xiuqin Zhao;Zhikang Li;Jianlong Xu;Wensheng Wang;Binying Fu

作者机构：

关键词： Epitranscriptome;Gene regulation;M6A methylation;MeRIP-seq;Rice;Salt stress

期刊名称： International Journal of Molecular Sciences

ISSN： 1661-6596

年卷期： 2022 年 23 卷 4 期

页码：

收录情况： JCR（2021版）

摘要： N6-methyladenosine (m6A) methylation represents a new layer of the epitranscriptomic regulation of plant development and growth. However, the effects of m6A on rice responses to environmental stimuli remain unclear. In this study, we performed a methylated-RNA immunoprecipitation sequencing analysis and compared the changes in m6A methylation and gene expression in rice under salt stress conditions. Salt stress significantly increased the m6A methylation in the shoots (p value < 0.05). Additionally, 2537 and 2304 differential m6A sites within 2134 and 1997 genes were identified in the shoots and roots, respectively, under salt stress and control conditions. These differential m6A sites were largely regulated in a tissue-specific manner. A unique set of genes encoding transcription factors, antioxidants, and auxin-responsive proteins had increased or decreased m6A methylation levels only in the shoots or roots under salt stress, implying m6A may mediate salt tolerance by regulating transcription, ROS homeostasis, and auxin signaling in a tissue-specific manner. Integrating analyses of m6A modifications and gene expression changes revealed that m6A changes regulate the expression of genes controlling plant growth, stress responses, and ion transport under saline conditions. These findings may help clarify the regulatory effects of m6A modifications on rice salt tolerance.

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