在Arabidopsis的先天免疫反应期间,ER-PM绑定Syt1限制了细胞与细胞的连接通过plasmodesmata
Jiajing Li1, Pengfei Lu2, Qing Pan2
1Beijing Key Laboratory of Gene Resource and Molecular Development, College of Life Science, Beijing Normal University, Beijing 100875, China; Guangdong Institute of Intelligence Science and Technology, Hengqin, Zhuhai 519031, China.
Cell reports
|May 4, 2025
概括
植物使用等离子体 (PD) 关闭来对抗微生物. 合成1 (Syt1) 招募ANN4到PD,导致的增加和PD的关闭,从而限制细菌的传播.
科学领域:
- 植物免疫力 植物免疫力
- 蜂通讯 蜂通讯是通过蜂通讯进行的.
- 分子信号传递是分子信号传递.
背景情况:
- 植物具有与生俱来的免疫反应,包括在检测微生物相关分子模式 (MAMPs) 时关闭等离子体 (PD).
- 准确的分子机制和信号通路控制MAMP诱导的PD关闭仍然不完全理解.
研究的目的:
- 为了阐明内质网膜 (ER) - 血膜 (PM) 结合Synaptotagmin 1 (Syt1) 在MAMP诱导的PD关闭中的作用.
- 研究Syt1如何调节植物免疫反应期间在PD-PM接口的信号和脂相互作用.
主要方法:
- 研究了Syt1在MAMP刺激时的局部化动态.
- 分析了ANN4的招募及其对局部升高的影响.
- 在PD-PM使用突变发生和药理学方法检查了Syt1与PI(4,5) P2的相互作用.
- 评估Syt1-PM脂质相互作用中断对PD关闭和植物免疫的影响.
主要成果:
- 在MAMP刺激后,Syt1在PD迅速积累.
- Syt1将透的载体ANN4招募到PD中,诱导局部的流入和依赖质的PD关闭.
- 在PD-PM时,Syt1的C2域感知器增加了PI(4,5) P2水平.
- 破坏Syt1-PM脂质相互作用会影响MAMP诱导的PD关闭.
结论:
- 通过在PD-PM中整合脂信号,Syt1充当了MAMP诱导的PD关闭的关键调节者.
- Syt1调节局部升,调节细胞间通信,以限制细菌病原体的传播.
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