The Rpml Hypersensitive Cell Death Pathway in Arabidopsis Initiated by Pseudomonas syringae AvrB

在植物及其病原体的共同进化过程中，植物已经发展出特异性的检测系统，通过识别因子（称为avr基因的产物）来检测病原体的存在，植物对这些因子的识别导致应答。Avr蛋白的模型通常假设它们是细胞外配体，而植物防御基因产物是细胞表面受体。然而，该模型没有足够的数据支持。这项工作将解决识别问题。假单胞菌AvrB在植物细胞内表达可引发病原菌反应。实验将确定AvrB结合的细胞内受体，并在转基因植物中鉴定AvrB作用产生的低分子量启动子。

9603814 He During co-evolution of plants and their pathogens, plants have developed specific detection systems to detect pathogen presence by recognizing factors, products of co-called avr genes, whose recognition by the plant leads to responses. The model for Avr proteins often assumes that they are extracellular ligands and that the plants defense gene products are cell surface receptors. However, the model is not sufficiently supported by data. The work will address the recognition problem. Pseudomonas AvrB expressed inside a plant cell can trigger the pathogen response. Experiments will identify the intracellular receptor to which AvrB binds, and identify the low-molecular weight elicitor which is produced by the action of AvrB in transgenic plants.