一种类似于Phytophthora受体的激酶调节卵胞发育,并可以激活模式触发的植物免疫力
Yong Pei1, Peiyun Ji1, Jierui Si1
1College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China.
Nature communications
|July 31, 2023
概括
一种富含氨酸的Phytophthora sojae重复受体类激酶 (LRR-RLK),PsRLK6,触发植物免疫力,对虫的性繁殖至关重要. 这项研究揭示了一种与病原体相关的新型分子模式,涉及菌体的发展和宿主-病原体相互作用.
科学领域:
- 植物病原体相互作用
- 分子植物病理学 分子植物病理学
- 虫生物学的生物学
背景情况:
- 植物细胞表面的氨酸丰富的重复受体样类激酶 (LRR-RLKs) 和受体样蛋白 (LRR-RLPs) 介导细胞外信号感知.
- LRR-RLKs存在于虫病原体中,但它们在宿主-病原体通信中的作用尚不清楚.
研究的目的:
- 研究来自Phytophthora sojae的虫LRR-RLK,PsRLK6的功能.
- 确定PsRLK6是否调解植物免疫力和卵菌体发育.
主要方法:
- 在大豆,西红和尼科蒂亚娜本塔米亚纳中进行PsRLK6表达和功能分析.
- 识别保存的oomycete同类物及其免疫诱导活性.
- 对PsRLK6在P. sojae卵胞发育中的作用的分析.
主要成果:
- PsRLK6激活大豆和非宿主植物的模式触发免疫力.
- 一个特定的PsRLK6区域 (LRR5-6) 足以激活依赖BAK1和SOBIR1.1的植物免疫反应.
- PsRLK6的同类物被保存在菌体中,并诱导免疫力.
- 在卵胞成熟过程中,PsRLK6受上调,对P. sojae卵胞发育至关重要.
结论:
- PsRLK6作为一种新型的与微生物相关的分子模式,参与虫性繁殖.
- 病原体LRR-RLKs可以被植物LRR-RLPs识别,从而激活植物免疫力.
- 这项研究阐明了宿主-病原体通信的新机制.
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