长非编码RNA ARTA通过MYB7核贩运控制ABA反应 在阿拉比多普西斯中
Jun Yang1, Reqing He1, Zhipeng Qu2
1Key Laboratory of Molecular Biology and Gene Engineering in Jiangxi Province, College of Life Science, Nanchang University, Nanchang, Jiangxi 330031, China.
Developmental cell
|June 8, 2023
概括
长非编码RNA ARTA 通过与 SAD2 相互作用,阻断转录因子 MYB7 的核导入. 这项ARTA的法规微调了MYB7核贩运,影响了酸反应和Arabidopsis的干旱耐受性.
科学领域:
- 分子生物学分子生物学
- 植物科学 植物科学
- 基因规则 基因规则
背景情况:
- 转录因子对于调节真核生物中的基因表达至关重要.
- 核转位是转录因子功能的一个关键步骤.
- 长非编码RNAs (lncRNAs) 正在成为各种生物过程中的关键调节者.
研究的目的:
- 研究 lncRNA ARTA 在基因表达调节中的作用.
- 阐明ARTA影响转录因子核进口的机制.
- 了解ARTA对植物对环境刺激,特别是干旱的反应的贡献.
主要方法:
- 研究了lncRNA ARTA与进口β类蛋白SAD2之间的相互作用.
- 分析了ARTA对转录因子MYB7.7的核转位的影响.
- 研究了ARTA对ABI5表达和酸 (ABA) 信号传导的影响.
- 通过基因突变分析评估了ARTA在Arabidopsis干旱耐受性中的作用.
主要成果:
- lncRNA ARTA通过其RNA结合区域直接与SAD2相互作用.
- ARTA 抑制了转录因子 MYB7.7 的核进口.
- 由酸 (ABA) 诱导的ARTA通过调节MYB7核贩运来积极调节ABI5的表达.
- 对ARTA的突变导致抑制ABI5表达,ABA脱敏,并降低了Arabidopsis的干旱耐受性.
结论:
- lncRNA ARTA劫持核贩运受体 (SAD2) 来控制转录因子 (MYB7) 的核进口.
- 这种机制在植物对干旱压力等环境线索的反应中发挥着重要作用.
- 在ABA信号通路中,ARTA起到关键调节者的作用,影响植物适应干旱条件.
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