在Arabidopsis thaliana中介于RPW8的广谱菌耐药性
1School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, UK.
概括
两个阿拉比多普西斯基因,耐粉8.1和RPW8.2,提供了对粉的广泛耐药性. 这些基因利用了依赖酸的防御系统,类似于用于特定耐药性的基因.
科学领域:
- 植物病理学 植物病理学
- 分子遗传学 分子遗传学
- 植物与微生物的相互作用
背景情况:
- 植物抗病 (R) 基因对于识别病原体和启动防御至关重要.
- 众所周知,Arabidopsis thaliana中的MILDEW8 (RPW8) 位点对粉末的耐药性可以赋予耐药性.
研究的目的:
- 为了研究RPW8位点所赋予的耐药性的遗传基础.
- 描述RPW8.1和RPW8.2基因的功能和防御机制.
主要方法:
- 在Arabidopsis thaliana中的RPW8位点的遗传分析.
- 关于RPW8.1和RPW8.2基因产品的表征.
- 对防御反应的分析,包括依赖酸的途径.
主要成果:
- RPW8位点包含两个不同的,主导的R基因:RPW8.1和RPW8.2.2.
- 无论是RPW8.1还是RPW8.2,各自都能对广泛的粉状菌病原体产生抗性.
- 通过RPW8介导的耐药性涉及到局部的,依赖酸的防御机制.
结论:
- RPW8.1和RPW8.2是新的R基因,提供广泛的抗病能力.
- 由RPW8介导的宽频电阻采用与特定电阻相同的防御途径.
- 了解RPW8的功能可以为提高作物抗病能力的策略提供信息.
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