索拉 (Solanum bulbocastanum) 核酸结合的氨酸丰富的重复受体进化揭示了Rpi-blb1/RB中的功能变异和关键残留物
Jie Li1, Sophie Mantelin2, Miles Armstrong3
1State Key Laboratory of Agricultural and Forestry Biosecurity, MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, 100193, China.
Journal of integrative plant biology
|June 17, 2025
概括
研究土豆中的自然遗传多样性.
科学领域:
- 植物病理学 植物病理学
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
背景情况:
- 主体-病原体的共同进化推动了抗药性基因的进化.
- 植物耐药性 (R) 基因中的天然遗传多样性仍未得到充分探索.
- 索兰 (Solanum bulbocastanum) 是一种野生土豆物种,具有宝贵的抗病特征.
研究的目的:
- 分析Solanum bulbocastanum中的Rpi-blb1/RB基因的自然遗传多样性.
- 为了功能性地描述Rpi-blb1/RB的新型变体及其对Phytophthora infestans的识别和激烈因素.
- 阐明Rpi-blb1/RB功能和激活背后的分子机制.
主要方法:
- 选Solanum bulbocastanum的附加物,以检测它们对Phytophthora infestans的耐药性.
- RenSeq和诊断RenSeq (dRenSeq) 用于针对性测序NLR基因.
- 克隆,功能分析,蛋白质-连接体相互作用建模 (FunFOLD2),西斑,共免疫沉和细胞生物学实验.
主要成果:
- 确定了11种耐药和1种敏感的Solanum bulbocastanum加入.
- 发现了三种新的功能Rpi-blb1/RB变体,并描述了非功能变体.
- 确定NB-ARC域中的氨基酸Ser347对Rpi-blb1/RB稳定性,自我关联和血再定位至关重要,这对于对Phytophthora infestans的抵抗至关重要.
结论:
- 自然遗传多样性显著影响Rpi-blb1/RB功能和土豆耐药性.
- 347是Rpi-blb1/RB激活和抵抗体形成的关键残留物.
- 了解Rpi-blb1/RB多样性为NLR进化和培育抗病马提供了洞察力.
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