植物K营养成分的变化改变了尼科蒂亚娜本塔米亚娜和Alternaria longipes之间的相互作用模式
Youwei Du1, Guangli Liu1, Hongchen Jia1
1State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China.
Plant, cell & environment
|May 15, 2024
概括
(K) 水平影响植物病原体相互作用. 高K激活植物耐药性基因,而病原体部署特定的效应物来抵消这些防御,在不同的营养环境中揭示出不同的策略.
科学领域:
- 植物病理学 植物病理学
- 植物与微生物的相互作用
- 营养信号传递 营养信号传递
背景情况:
- (K) 肥料增强了植物的抗病能力,但潜在的机制尚不清楚.
- 植物病原体相互作用涉及复杂的分子交叉,受到营养物质可用性等环境因素的影响.
研究的目的:
- 阐明在尼科蒂安娜塔米亚纳的植物防治Alternaria longipes中的作用的分子机制.
- 研究不同水平如何调节宿主耐药性基因表达和病原体效应活性.
主要方法:
- 在高K和低K条件下对宿主抗性基因 (NLR) 和病原因因子的差异基因表达分析.
- 基因沉默和过度表达实验,以评估特定NLRs的功能.
- 同免疫沉试验用于识别宿主NLR和病原体作用因子之间的蛋白质-蛋白质相互作用.
主要成果:
- 高K激活核酸结合域和富含白的重复含有蛋白 (NLRs) 如NbRPM1,NbR1B23和NbNBS12,增强耐药性.
- 在高K环境中的病原体效应器HKCSP1和HKCSP2分别准了NbRPM1和NbPR5,抑制了宿主防御.
- 在低K条件下,病原体效应剂LKCSP针对NbR1B23,降低了植物的耐药性.
结论:
- 尼科蒂亚娜·本塔米亚纳和阿尔特纳里亚长管都采用了不同的分子策略,由的可用性调节.
- 宿主植物利用NLR激活防御途径,而病原体则部署特定的效应物来破坏这些途径,证明了依赖营养的军备竞赛.
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