一个与核素相关的信号级联通过基因素修饰控制植物免疫力
Leiwen Pan1, Shun Peng1, Yuehui Zhang1
1Shanghai Engineering Research Center of Plant Germplasm Resources, Shanghai Collaborative Innovation Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China.
Genome biology
|October 7, 2025
概括
一个新发现的信号级联涉及PR基因5 (CPR5) 的构成表达,RNA处理复合体和基因组修饰剂,通过基因组修饰控制SARD1和CBP60g转录来调节植物免疫力.
科学领域:
- 植物免疫力 植物免疫力
- 分子植物病理学 分子植物病理学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 植物具有强大的转录重编程,可以抵抗病原体的入侵.
- 转录因子SARD1和CBP60g是植物免疫的关键调节者.
- 对SARD1和CBP60g的精确转录调节在很大程度上是未知的.
研究的目的:
- 阐明管理SARD1和CBP60g转录的调控机制.
- 确定植物免疫信号通路中的关键参与者.
- 了解表观遗传修饰如何影响植物防御反应.
主要方法:
- 基因查以确定自身免疫表型的抑制剂.
- 转录组分析以评估基因表达变化.
- 同免疫沉和ChIP-qPCR用于研究蛋白质相互作用和DNA结合.
- 基斯修饰分析 (H3K4me3).
主要成果:
- 确定了一个以CPR5和GBPL3为中心的信号复合体,调节SARD1和CBP60g转录.
- RNA处理复合体NTC和CPSF在CPR5.5的下游作用.
- GBPL3和基因组修饰剂在物理上相互作用,与SARD1/CBP60g位点结合,并抑制转录.
- 病原体感染破坏了这种抑制性结合,导致H3K4me3标记增加和基因激活.
结论:
- 一种CPR5-NTC/CPSF-GBPL3/基因组修饰剂的信号级联控制SARD1和CBP60g的转录.
- 基斯修饰是调节植物免疫转录重编程的关键机制.
- 这种级联微调植物防御对病原体挑战的反应.
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