该RALF2-FERONIA-MYB63模块协调番茄根的生长和防御
Yanfen Fan1,2, Junyu Bai1, Shaofang Wu2
1College of Horticulture, Northwest Agriculture and Forestry University, Yangling, Shaanxi, 712100, China.
The New phytologist
|June 4, 2024
概括
番茄中的RALF2-FER通路通过控制素沉积来调节根生长和防御Fusarium oxysporum. 这一发现揭示了植物如何平衡生长和防御机制.
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
- 植物生理学 植物生理学
背景情况:
- 植物分泌的,快速化因子 (RALFs),与FERONIA (FER) 相互作用,对植物生长至关重要.
- 在调解植物生长-防御权衡方面,RALF-FER途径的确切作用尚未完全被理解.
研究的目的:
- 研究西红 (Solanum lycopersicum) 中RALF2和FER的功能,涉及根生长,素沉积和对Fusarium oxysporum f. sp.的防御. lycopersici (Fol.) 的意思,就是说,它们是的.
- 阐明RALF-FER途径参与生长-防御平衡的基础分子机制.
主要方法:
- 基因编辑CRISPR/Cas9基因编辑,以创建ralf2和fer突变.
- 蛋白与蛋白相互作用试验用于研究FER和MYB63.3.
- 转录调节分析以了解MYB63在DIR19表达中的作用.
- 根生长的表型分析,素含量,以及Fol抗性.
主要成果:
- 与野生类型番茄相比,ralf2和fer突变体表现出较短的初级根,增加的红素积累,以及增强的Fol抗性.
- 铁直接与MYB63相互作用并酸化,促进其降解.
- MYB63作为DIR19的转录激活剂,这是一种参与素沉积的基因. DIR19突变逆转了ralf2或fer突变体中观察到的表型.
结论:
- 信号模块RALF2-FER-MYB63通过调节红沉积来微调番茄根的生长和Fol抗性.
- 这项研究为植物如何通过RALF-FER途径实现生长和防御策略之间的平衡提供了新的见解.
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