通过TPR4-ERF115动态,RALF33-FERONIA信号编排了受伤后的根尖再生
Yanan Shen1, Qijun Xie1, Tiantian Wang2
1State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, and Hunan Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, Changsha, 410082, China.
The Plant cell
|May 5, 2025
概括
植物根再生涉及一种新的信号通路. 快速化因子33 (RALF33) 积通过抑制FERONIA (FER) 受体信号传递促进再生,影响关键的转录因子.
科学领域:
- 植物生物学 植物生物学
- 分子机制的分子机制
- 再生生物学 再生生物学
背景情况:
- 伤害后植物组织和器官再生的分子基础在很大程度上是未知的.
- 了解这些机制对于推进植物科学和农业至关重要.
研究的目的:
- 确定和阐明调节Arabidopsis thaliana中伤口诱导的根再生的信号通路.
- 要突出特定和受体在这个过程中的作用.
主要方法:
- 研究了RAPID ALKALINIZATION FACTOR33 (RALF33) 和它的受体FERONIA (FER) 在阿拉比多普西斯根再生中的功能.
- 使用遗传和分子方法分析了RALF33,FER,TOPLESS-RELATED4 (TPR4) 和乙烯反应因子115 (ERF115) 之间的相互作用.
- 利用氨酸替代剂来研究酸化部位破坏对TPR4功能的影响.
主要成果:
- 伤害会诱导RALF33的积累,从而促进根部的再生.
- 缺乏功能FER (fer突变) 的突变体表现出增强的再生能力.
- RALF33阻碍了TPR4的FER介导酸化,防止其核定位和与ERF115.5的相互作用.
- 当ERF115不被TPR4.4结合时,表现出增加的转录活性.
- 突变TPR4酸化位点 (TPR4A) 导致错位和ERF115结合受损.
结论:
- 信号级联RALF33-FER-TPR4-ERF115是植物中受伤诱导的根再生的关键调节器.
- 这一途径为复杂的植物再生反应控制提供了关键的见解.
- 这些发现为未来研究增强植物再生能力提供了基础.
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