在虫Riptortus pedestris中保存的蛋白质家族在调节植物免疫力方面发挥了双重作用
Jiangxuan Zhou1, Zhiyuan Yin2, Danyu Shen2
1Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China.
Plant physiology
|September 4, 2024
概括
虫使用一种蛋白质家族 (RPH1) 触发大豆防御,而相关蛋白质 (RPH1L2-5) 阻断这些防御. 这揭示了一种新的昆虫策略,以逃避植物免疫力.
科学领域:
- 植物与昆虫的相互作用
- 植物免疫的分子机制
- 化学生态化学生态学
背景情况:
- 虫虫 (Riptortus pedestris) 是一个重要的大豆害虫,通过常绿综合征导致产量损失.
- 大豆防御和昆虫对抗R. pedestris的防御机制尚不清楚.
研究的目的:
- 描述R. pedestris HAMP 1 (RPH1) 蛋白家族及其在大豆免疫力中的作用.
- 研究R. pedestris如何逃避植物防御的方法.
主要方法:
- 在R. pedestris. 中蛋白质家族的表征.
- 在烟草 (Nicotiana benthamiana) 和大豆 (Glycine max) 中进行测试,以评估免疫反应.
- 对莉酸和乙烯生物合成的分析.
- 对跨物种的RPH1同类生物信息分析.
主要成果:
- RPH1和RPH1L1作为与草食动物相关的分子模式 (HAMPs) 起作用,激活植物的模式触发免疫 (PTI).
- 通过刺激斯蒙酸和乙烯通路,RPH1增强了大豆的耐药性.
- 在各种草食昆虫中保留了RPH1同类物,可以触发植物免疫力.
- RPH1L2-5对应物作为作用因子,通过破坏细胞外感知来抑制RPH1诱导的PTI.
结论:
- 这项研究确定了一种在昆虫中保存的HAMP家族,在植物免疫力中具有双重作用.
- R. pedestris 采用功能差异化的类似物来引起和抑制植物防御,代表细胞外逃避机制.
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