摘要:小麦白粉病是由专性寄生真菌小麦白粉病菌引起的病害,目前对白粉病抗病性强,抗谱范围广的基因Pm21已被本实验室定位到染色体6VS的FL:0.45-FL:0.58区段 ,在该区段加密遗传标记缩短了Pm21所在的区间,并在该区段克隆获得一个CC-NBS-LRR类的抗病基因NLR1-V,但是该候选基因在小麦的抗白粉病通路中如何发挥作用,如何通过蛋白质间相互作用发挥抗病机制目前尚不明确,本研究利用酵母双杂交系统技术在实验室前人研究的基础上,对定位于Pm21基因座的CC-NBS-LRR类抗白粉病候选基因NLR1-V的蛋白在小麦抗白粉病通路中与哪些基因蛋白有互作进行研究,构建诱饵载体和三框cDNA文库,通过三轮筛选得到35个可能互作的基因片段,分析蛋白类型和结构为之后NLR1-V基因介导的抗白粉病分子机制奠定基础、提供依据。31408 毕业论文关键词:小麦白粉病;CC-NBS-LRR类抗病基因;蛋白质互作;酵母双杂交系统;候选蛋白筛选
Using the yeast two hybrid technology screening disease-resistant gene protein interactions
Abstract: Wheat is an important crop in world, it is one of the most widely planting food crops, wheat have a large number of production and consumption in China every year, but in wheat production process, there are some factors such as natural or unnatural will bring stress to the wheat growth, such as the wheat powdery mildew, caused by the obligate parasites fungus, the Pm21 is strong for powdery mildew resistance and resistance spectrum of a wide range of resistance genes, The gene is positioning in the FL:0.45-FL:0.58 of the chromosome 6VS by our laboratory, and in the section of encryption genetic markers to shorten the Pm21 in the interval, in the section for cloning a CC - NBS LRR class candidate resistance genes, but this candidate genes how to play a role in wheat powdery mildew resistance pathway, how to use protein interactions play a disease-resistant mechanism is not clear, this research use yeast two hybrid system technology in the laboratory, on the basis of predecessors' research, to study the CC - NBS LRR - class candidate powdery mildew resistance gene and protein how to interactions and work in wheat powdery mildew resistance pathways, with the study for laying a foundation for the gene mediated disease resistance molecular mechanism and provides the basis.
Key words: Wheat powdery mildew; cc-NBS-LRR; Protein interactions; the yeast two hybrid technology
目 录