一个依赖酸化的泛化开关在基感知时调节核免疫重编程.
Chongyang Zhang1,2,3, Pavinee Suttiviriya2, Ruyi Wang1
1State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.
Nature communications
|February 21, 2026
概括
米14-3-3蛋白 OsGF14f 和 OsGF14c 增强了对米爆发真菌的抵抗力. 素感知触发了稳定这些蛋白质的途径,增强了植物对Magnaporthe oryzae的免疫力.
科学领域:
- 植物生物学 植物生物学
- 分子植物病理学 分子植物病理学
- 生物化学 生物化学
背景情况:
- 14-3-3蛋白对植物生长和应激反应至关重要.
- 它们在植物免疫力中的特定作用和调节机制尚不清楚.
研究的目的:
- 为了研究大米14-3-3蛋白在对Magnaporthe oryzae的免疫力中的功能.
- 阐明控制大米植物免疫力的监管机制.
主要方法:
- 研究了米中的OsGF14f和OsGF14c的功能.
- 分析了E3结合酶OsPUB20在蛋白质降解中的作用.
- 研究了素感知和OsRLCK185酸化的影响.
- 使用显微镜和生化分析检查了蛋白质定位和相互作用.
主要成果:
- OsGF14f和OsGF14c冗余地增强了大米对Magnaporthe oryzae的耐药性.
- OsPUB20针对OsGF14f/OsGF14c进行降解,从而对免疫进行负面调节.
- 素感知激活OsRLCK185,酸化和稳定OsPUB20,从而增强耐药性.
- OsGF14f 移动到核中,降解负调节器 OsWRKY42.2.
结论:
- 一个新的酸化依赖的无处不在开关调节了大米免疫力.
- 这种机制将细胞表面素感知与核防御反应联系起来.
- 结果提供了关于植物免疫信号通路和作物改善的潜在目标的见解.
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