虫效应器Mp10通过EDS1-依赖调节植物DAMP反应来平衡免疫抑制和防御激活
Matteo Gravino1, Sam T Mugford1, Daniela Pontiggia2,3
1Department of Crop Genetics, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK.
The New phytologist
|July 31, 2025
概括
虫通过限制损伤相关分子模式 (DAMP) 生产和分泌像Mp10/CSP4.4这样的效应剂来抑制植物免疫力. 这种效应器抑制了DAMP触发的免疫力 (DTI),并操纵宿主防御,以增强虫的繁殖.
科学领域:
- 植物与昆虫的相互作用
- 植物免疫力 植物免疫力
- 分子植物病理学 分子植物病理学
背景情况:
- 损伤相关分子模式 (DAMP) 触发免疫 (DTI) 是植物对害虫的防御.
- 虫逃避DTI的机制尚未完全理解.
研究的目的:
- 为了研究虫Myzus persicae如何逃避Arabidopsis thaliana的DTI.
- 为了确定参与这种相互作用的特定DAMP和虫效应因子.
主要方法:
- 已经研究了Arabidopsis thaliana与Myzus persicae的相互作用.
- 鉴定出细胞壁衍生型的Oligogalacturonides (OGs) 作为诱导DTI的DAMPs.
- 描述了对OG反应性免疫元件 (BAK1-LIKE 1,CPK5/CPK6,GRP3,EDS1) 的作用.
- 分析了虫唾液化学感知蛋白 (CSP) 效应器Mp10/CSP4.4的功能.
主要成果:
- 虫食减少了受伤时的OG产量.
- Mp10/CSP4通过向对OG敏感免疫路径来抑制OG诱导的DTI.
- Mp10/CSP4通过抑制EDS1-介导的防御系统,同时恢复OG反应能力来增强虫的生育能力.
结论:
- 橄甲氨酸 (OGs) 是关键的DAMP,诱导植物对虫的免疫力.
- 虫效应器Mp10/CSP4抑制OG诱导的DTI,并操纵植物防御系统以适应宿主.
- 虫采用复杂的策略来逃避植物免疫力,涉及效应蛋白调节宿主反应.
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