伴随长距离电信号的pH值变化控制了全身莉花酸生物合成
Maria Ladeynova1, Darya Kuznetsova1, Anna Pecherina1
1Department of Biophysics, National Research Lobachevsky State University of Nizhny Novgorod, 23 Gagarin Avenue, 603022, Nizhny Novgorod, Russia.
Journal of plant physiology
|March 24, 2024
概括
当地植物损伤触发了电信号,激活了防御激素斯酸 (JA) 和斯-L-异氨酸 (JA-Ile). 这一过程涉及pH和的变化,调节系统组织中的激素产生.
科学领域:
- 植物生理学 植物生理学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 局部刺激会诱导植物的防御反应,包括莉酸 (JA) 的产生.
- 系统信号通路对于协调植物对损害的防御至关重要.
- 斯蒙酸盐,如JA和JA-Ile,在植物免疫力中起着关键作用.
研究的目的:
- 研究电信号和相关离子流在调节系统性斯酸盐生产中的作用.
- 阐明局部损伤感知导致防御激素在远端组织中的积累的机制.
主要方法:
- 在植物组织中监测电信号 (变化潜力).
- 测量斯酸 (JA) 和斯-L-单氨酸 (JA-Ile) 的含量.
- 在信号传播过程中分析细胞内pH值和Ca2+动态.
主要成果:
- 在局部刺激后,在未受损的组织中观察到JA和JA-Ile的快速增加.
- 这一增长与前体12-oxo-phytodienoic acid (OPDA) 的减少一致.
- 变化电位 (VP) 电信号,涉及pH和Ca2+的变化,先于系统的斯酸盐积累.
结论:
- 系统性莉花产量是由VP介导的电信号调节的.
- 在VP期间细胞内pH和Ca2+的变化是控制OPDA转化为JA的关键机制.
- 这项研究揭示了一种新的信号通路,将电信号与植物防御激素合成联系起来.
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