敲除OsRLK7-1会损害大米的生长和发育,但会增强其对虫的抵抗力
Shanjie Han1, Zhifan Shen1, Qing Gao1
1State Key Laboratory of Rice Biology and Breeding & Ministry of Agriculture Key Lab of Agricultural Entomology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China.
International journal of molecular sciences
|October 14, 2023
概括
富含白的重复受体类激酶调节了对植物的防护. 破坏OsRLK7-1可以增强植物的抵抗力,但会损害生长和繁殖.
科学领域:
- 植物分子生物学 植物分子生物学
- 植物与昆虫的相互作用
- 植物防御机制 植物防御机制
背景情况:
- 富含白氨酸的重复受体类激酶 (LRR-RLKs) 对植物应激反应至关重要.
- 对于LRR-RLKs在草食动物诱导的植物防御中的特定作用尚不清楚.
研究的目的:
- 调查大米LRR-RLK基因,OsRLK7-1的功能,对抗植物草食植物的植物防御.
- 确定OsRLK7-1中断对植物防御信号通路和阻力的影响.
主要方法:
- 对OsRLK7-1和与防御相关的基因进行基因表达分析 (RT-qPCR).
- 激素分析 (JA-单氨酸,酸).
- 胺胺生物合成分析.
- 在实验室和现场条件下,在植物感染下对OsRLK7-1淘汰 (ko-rlk) 线的表型分析.
主要成果:
- OsRLK7-1的表达是受伤诱导的,但被植物感染所抑制.
- 破坏OsRLK7-1 (ko-rlk线) 会导致防御基因 (OsMPK3,OsWRKYs) 的表达增加,以及防御激素 (JA-isoleucine,ABA) 的水平升高.
- 科尔克菌株表现出增强的胺基生物合成和对植物的抗性增加,尽管植物生长和繁殖受到负面影响.
结论:
- OsRLK7-1 负面调节了对抗植物虫的水防御反应.
- OsRLK7-1在平衡水中的植物防御,生长和繁殖方面发挥着双重作用.
- 准OsRLK7-1可能是提高作物耐药性的策略,但必须考虑植物健康的潜在权衡.
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