线粒体电压依赖的离子通道3通过绝缘酸信号调节口腔关闭
Haixia Qin1, Wenqi Yang1, Zile Liu1
1State Key Laboratory of Crop Stress Adaptation and Improvement, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, Kaifeng 475004, China.
Plant physiology
|September 29, 2023
概括
线粒体蛋白VDAC3,与PYR1/PYL类受体和SnRK2激酶一起,通过调节活性氧物种 (ROS) 积累来控制酸 (ABA) 诱导的口腔关闭.
科学领域:
- 植物生物学 植物生物学
- 分子植物生理学分子植物生理学
- 无生物应激反应应激反应
背景情况:
- 酸 (ABA) 信号调节植物对干旱压力的反应,主要是通过口腔关闭.
- 皮拉巴克抗性1 [PYR1]/PYR1-LIKE [PYLs]和SNF1-RELATED KINASE 2 (SnRK2s) 的冗余作用介导了ABA反应.
- 线粒体反应性氧物种 (ROS) 积累是ABA诱导的口腔关闭的一个关键因素.
研究的目的:
- 为了研究电压依赖性离子通道3 (VDAC3) 在ABA介导的口腔关闭中的作用.
- 阐明VDAC3,PYLs和SnRK2s在调节ROS稳态中的相互作用.
- 了解VDAC3如何对口腔关闭的冗余控制作出贡献.
主要方法:
- 分析各种阿拉比多普西斯塔利亚纳突变 (单一和更高阶) 的口腔运动.
- 在VDAC3,PYLs和SnRK2s之间进行蛋白质-蛋白质相互作用测试.
- 测量细胞和线粒体ROS水平对ABA治疗的反应.
主要成果:
- VDAC3与多个PYL和SnRK2相互作用,这表明它在ABA信号传递中发挥了作用.
- 在VDAC3中的突变,特别是与特定的PYL或SnRK2突变相结合,显著损害了ABA诱导的口腔关闭.
- VDAC3影响ABA诱导的ROS在细胞和线粒体两部分的积累.
- 过氧化 (H2O2) 治疗在敏感突变者中挽救了ABA诱导的口腔关闭.
结论:
- 在ABA介导的口腔关闭的冗余调节中,VDAC3是一个至关重要的组成部分.
- VDAC3通过影响ROS产生和恒温来调节ABA信号.
- 这项研究强调了VDAC3对控制工厂水损失的复杂网络的贡献.
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