植物免疫受体SNC1监控由细菌效应体准的辅助NLRs
Ming-Yu Wang1, Jun-Bin Chen1, Rui Wu2
1Key Laboratory of Surveillance and Management for Plant Quarantine Pests, Ministry of Agriculture and Rural Affairs, and College of Plant Protection, State Key Laboratory of Maize Bio-breeding, China Agricultural University, Beijing 100193, China.
Cell host & microbe
|November 9, 2023
概括
植物使用不同的策略来防御病原体对细胞内免疫力的攻击. 这项研究揭示了Arabidopsis thaliana如何采用序列变化和防护系统来维持植物对Pseudomonas注射器效应者的防御.
科学领域:
- 植物免疫力 植物免疫力
- 分子植物病原体相互作用
- 阿拉比多普西斯塔利亚纳研究研究
背景情况:
- 植物拥有细胞内受体来对抗抑制细胞表面受体免疫力的病原体效应物.
- 病原体对细胞内受体免疫的操纵和植物对抗策略尚未完全理解.
- 阿拉比多普西斯塔利亚纳利用ADR1类核酸结合域白酸丰富的重复受体 (NB-LRRs) 进行细胞内免疫.
研究的目的:
- 为了调查Pseudomonas注射器效应器如何操纵细胞内植物免疫.
- 为了阐明Arabidopsis thaliana对抗这种病原体攻击的机制.
- 确定SNC1免疫受体在植物防御中的功能.
主要方法:
- 研究了Pseudomonas注射器效应因子AvrPtoB和Arabidopsis的ADR1类受体之间的相互作用.
- 分析了在ADR1-介导免疫中无化部位的作用.
- 研究了SNC1受体在植物防御信号中的相互作用和功能.
主要成果:
- 伪蒙菌注射器效应剂AvrPtoB抑制了通过ADR1-L1和ADR1-L2调解的细胞死亡,但不是ADR1.
- ADR1通过在效应器准的无处不在位上多样化而逃避了AvrPtoB抑制.
- SNC1受体与ADR1-L1/L2相互作用并保护它,在病原体受到挑战时通过ADR1激活防御信号.
结论:
- 植物采用序列多样化和多层防护系统来保护核心免疫功能.
- SNC1充当关键的防护受体,通过ADR1发出信号,触发植物对病原体作用因子的免疫力.
- 这项研究澄清了SNC1在防御中的作用,并揭示了针对病原体操纵细胞内免疫的复杂植物策略.
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