一个三方静态控制自我调节的宿主植物对昆虫的抵抗力
Jianping Guo1,2, Huiying Wang1,3, Wei Guan1,2
1State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China.
Nature
|June 14, 2023
概括
科学家发现一种昆虫唾液蛋白, 这种蛋白在一些植物中触发了植物抵抗力 (HPR),而在其他植物中抑制了防御,揭示了一种新的昆虫-植物相互作用机制.
科学领域:
- 植物与昆虫的相互作用
- 分子植物病理学
- 草食动物的抵抗机制
背景情况:
- 植物耐药性 (HPR) 涉及类似受体的激酶和核酸结合的丰富的重复受体.
- HPR和昆虫效应器识别的分子机制在很大程度上是未知的.
研究的目的:
- 确定植物免疫受体感知到的昆虫唾液蛋白.
- 阐明植物对食草动物的抗性背后的分子机制.
主要方法:
- 鉴定和描述了棕色植物唾液蛋白BISP.
- 研究了BISP与水免疫受体BPH14和OsRLCK185的相互作用.
- 研究了自 (OsNBR1和OsATG8) 在调节BISP水平和HPR中的作用.
主要成果:
- 发现BISP通过向OsRLCK185来抑制敏感大米的基底防御.
- 证明BPH14直接与耐药大米中的BISP结合,激活HPR.
- 透露通过OsNBR1和OsATG8的自会降解BISP,微调HPR并恢复平衡.
结论:
- 通过植物免疫受体 (BPH14) 识别出一种新的昆虫唾液蛋白 (BISP).
- 发现了涉及BISP,BPH14和自的三方相互作用系统来调节植物的抵抗力.
- 这一发现为开发高产,抗虫的作物提供了新的策略.
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