N-6-Methyladenosine mRNA modification regulates transcripts stability associated with cotton fiber elongation
文献类型: 外文期刊
第一作者: Xing, Kun
作者: Xing, Kun;Zhang, Yan;Yang, Zuoren;Xing, Kun;Liu, Le;Zhang, Jie;Wang, Ye;Liu, Lisen;Gu, Yu;Yang, Zuoren;Liu, Zhao;Qanmber, Ghulam;Zhang, Changsheng;Li, Shuaijie;Yang, Zuoren;Yang, Zuoren
作者机构:
关键词: fiber elongation; m(6)A methylation; gene expression; Ligon lintless-2; GhMYB44
期刊名称:PLANT JOURNAL ( 影响因子:7.2; 五年影响因子:7.9 )
ISSN: 0960-7412
年卷期: 2023 年 115 卷 4 期
页码:
收录情况: SCI
摘要: N-6-Methyladenosine (m(6)A) is the most abundant methylation modification in eukaryotic mRNA. The discovery of the dynamic and reversible regulatory mechanism of m(6)A has greatly promoted the development of m(6)A-led epitranscriptomics. However, the characterization of m(6)A in cotton fiber is still unknown. Here, we reveal the potential link between m(6)A modification and cotton fiber elongation by parallel m(6)A-immunoprecipitation-sequencing (m(6)A-seq) and RNA-seq analysis of fibers from the short fiber mutants Ligonliness-2 (Li-2) and wildtype (WT). This study demonstrated a higher level of m(6)A in the Li-2 mutant, with the enrichment of m(6)A modifications in the stop codon, 3'-untranslated region and coding sequence regions than in WT cotton. In the correlation analysis between genes containing differential m(6)A modifications and differentially expressed genes, we identified several genes that could potentially regulate fiber elongation, including cytoskeleton, microtubule binding, cell wall and transcription factors (TFs). We further confirmed that the methylation of m(6)A affected the mRNA stability of these fiber elongation-related genes including the TF GhMYB44, which showed the highest expression level in the RNA-seq data and m(6)A methylation in the m(6)A-seq data. Next, the overexpression of GhMYB44 reduces fiber elongation, whereas the silencing of GhMYB44 produces longer fibers. In summary, these results uncover that m(6)A methylation regulated the expression of genes related to fiber development by affecting mRNA's stability, ultimately affecting cotton fiber elongation.
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