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对替代拼接辅因子U2AF65B基因家族的全面分析揭示了其在应激反应和根部发育中的作用
Xiangfeng Meng1, Yongzhou Wang1, Bei Tang1
1College of Life Sciences, Nantong University, Nantong 226019, China.
International journal of molecular sciences
|May 7, 2025
概括
植物中的U2AF65B基因家族有103个成员,具有保留的功能. 阿拉比多普西斯中AtU2AF65B的丧失增强了根生长,影响了发芽,揭示了它在植物发育中的作用.
科学领域:
- 分子生物学分子生物学
- 植物科学 植物科学
- 遗传学 是一个遗传学.
背景情况:
- U2AF65是已知的拼接辅助因子,但其大子单元U2AF65B的功能尚不清楚.
- 了解U2AF65B的作用对于理解植物中的替代拼接调节至关重要.
研究的目的:
- 系统地识别和分析36种植物中的U2AF65B基因家族.
- 研究U2AF65B.的进化史,分子机制和功能作用.
主要方法:
- 遗传学分析,基因结构,保存型号和同质模型被用来分析U2AF65B基因.
- 进行了Cis-acting元素,表达,亚细胞局部化和替代拼接特征分析.
- 进行了一种Arabidopsis U2AF65B突变的功能分析.
主要成果:
- 确定了103个假定的U2AF65B基因,它们的结构和功能得到保留,分为两个分类和五个子组.
- 在U2AF65B蛋白质中观察到显著的氨基酸保存,特别是在D和E组.
- U2AF65B基因对刺激做出反应,定位到核/细胞质,并表现出可变的AS频率;AtU2AF65B的损失增强了根的延长,并减少了依赖ABA的发芽抑制.
结论:
- U2AF65B基因家族显示了植物之间的进化分歧和保存的分子特征.
- U2AF65B在负面调节幼苗生长和发育方面发挥作用,影响根的延长和ABA信号传递.
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