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在Arabidopsis根中调节FERONIA控制免疫的裂变和转移

Jia Chen¹, Fan Xu¹, Xiaonan Qiang¹

¹State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, Changsha, China.

|October 14, 2024

概括

植物根使用局部免疫 (LI) 涉及FERONIA (FER) 受体. 一个裂开的FER部分移动到核中,激活根区对细菌的免疫力.

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
植物免疫力植物免疫力

背景情况:

植物根具有局部免疫力 (LI),主要在过渡区 (TZ) 和延伸区 (EZ).
血中的受体类激酶 (RLK) 对植物对根球细菌的反应至关重要,但它们在根 LI 中的作用尚未完全理解.

研究的目的:

为了研究RLK FERONIA (FER) 在调解Arabidopsis根的局部免疫力中的作用.
阐明FER调节根生长和免疫之间的平衡的分子机制.

主要方法:

研究了FERONIA (FER) 在Arabidopsis thaliana中的双重功能.
分析了FER细胞质域 (FERN) 的裂变和核转移.
研究了快速化因子23 (RALF23) 和矩阵金属蛋白酶At2-MMP在FER激活中的作用.

主要成果:

确定了FERONIA (FER) 作为Arabidopsis根中的局部免疫 (LI) 的关键调节剂.
证明了分裂的FER细胞质域 (FERN) 转移到核中以激活TZ和EZ中的LI.
表明在等离子膜上全长的FER促进生长,而细菌殖民导致FER裂变和免疫激活.

结论:

两个分子形式的FERONIA (FER) 通过在Arabidopsis根中的LI激活来平衡植物生长和免疫力.
在对细菌殖民的反应中,FERN充当核免疫激活剂.
这项研究揭示了一种调节根免疫和生长的新机制.

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