化物,谷氨和昆虫衍生的诱导物引入到树触发电信号发出电信号
Yong-Qiang Gao1, Hugo Morin2,3, Laurence Marcourt2,3
1Department of Plant Molecular Biology, University of Lausanne, Lausanne 1015, Switzerland.
Plant physiology
|November 5, 2023
概括
植物防御信号,如谷氨酸和谷氨衍生物,触发植物叶子中的电变化. 离子也在这些伤口反应中发挥作用,扩大了我们对植物信号传递的理解.
科学领域:
- 植物生物学 植物生物学
- 植物生理学 植物生理学
- 生物化学 生物化学
背景情况:
- 植物的防御机制涉及复杂的信号通路.
- 膜脱极化是植物对受伤和病原体攻击的反应中的关键电信号.
- 已知葡萄糖酸盐 (GSL) 分解产物参与植物防御,但它们在电信号中的确切作用尚未完全理解.
研究的目的:
- 用Ricca测定方法识别在植物血管中引起膜脱极化的低分子量化合物.
- 调查葡萄糖酸盐 (GSL) 分解产物和谷氨在植物电信号传输中的作用.
- 探索Ricca测试对研究植物与昆虫和微生物相互作用的潜力.
主要方法:
- 使用Ricca测定用于将化合物直接引入植物叶子血管系统.
- 采用了阿拉比多普西斯树叶提取物的染色分化方法来分离活性化合物.
- 测试了各种化合物,包括谷氨酸,GLS分解产物,谷氨,硫甲谷氨和离子,以检测它们诱导膜去极化的能力.
- 引入了虫提取物和细菌 (flg22),以评估Ricca测定在物种间相互作用中的实用性.
主要成果:
- 谷氨酸被确定为一种强大的低分子量诱导膜脱极化.
- 谷氨酸和硫氨酸谷氨酸引发了膜脱极化,这表明GLS分解和谷氨酸信号传递之间存在联系.
- 发现离子会诱导类似于谷氨酸受体的3.3-依赖性膜脱极化.
- 在本试验中,基衍生GLS分解产物 (基,异基酸盐) 没有触发电活动.
结论:
- 谷氨酸,谷氨衍生物和离子是植物伤害反应膜潜在变化的重要信号分子.
- 这项研究强调了葡萄糖酸盐 (GSL) 代谢和谷氨在产生植物防御信号方面的新联系.
- 里卡测试是一种多功能工具,用于调查植物与草食动物和病原体的相互作用.
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