发现融合型号识别受体 识别植物系中的植物光
Yong Pei1, Yaning Zhao1, Hui Wang1
1State Key Laboratory of Agricultural and Forestry Biosecurity, College of Plant Protection, Nanjing Agricultural University, Nanjing, China.
Plant biotechnology journal
|October 11, 2025
概括
植物免疫依赖于模式识别受体 (PRRs). 这项研究揭示了无关的PRRs可以融合进化以检测相同的微生物关联分子模式 (MAMPs),有助于作物疾病耐药性的发现.
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
- 免疫学 免疫学 免疫学
背景情况:
- 模式识别受体 (PRRs) 对于植物对病原体的免疫反应至关重要.
- 在作物中发现PRR是具有挑战性的,因为快速进化和谱系特定的基因家族.
- 微生物相关分子模式 (MAMPs) 触发植物免疫力,但涉及的受体在物种之间可能有所不同.
研究的目的:
- 研究PRRs在植物免疫中的融合演变.
- 通过探索与ortholog独立的机制来确定作物疾病耐药性的新型PRR.
- 建立一个管道,以发现植物免疫受体跨不同的血统.
主要方法:
- 利用Phytophthora衍生的MAMP RLK6作为选感知受体的模型.
- 采用了AlphaFold3结构预测,与尼古提亚坦亚纳受体突变体中的功能查相结合.
- 在各种植物物种中进行了植物遗传学分析和异质表达研究.
主要成果:
- 确定了NbRKR1和NbRKR2作为尼科蒂亚娜本塔米亚纳中RLK6的冗余受体.
- 在大豆中发现GmRLP30作为一个融合进化的RLK6受体,缺乏NbRKR1/2.2的正义基因.
- 证实了NbRKR1和GmRLP30在感知RLK6方面的功能等价性,即使在具有分歧或缺席的正向物种中也是如此.
结论:
- 植物免疫受体可以融合进化,为MAMP感知提供一个ortolog独立的途径.
- 这一发现促进了跨作物种的快速PRR开采,有助于长期发展抗病能力.
- 这些发现为工程合成免疫受体为增强作物保护提供了基础.
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