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首页> 外文期刊>The Plant Cell >ENHANCED DISEASE RESISTANCE4 Associates with CLATHRIN HEAVY CHAIN2 and Modulates Plant Immunity by Regulating Relocation of EDR1 in Arabidopsis
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ENHANCED DISEASE RESISTANCE4 Associates with CLATHRIN HEAVY CHAIN2 and Modulates Plant Immunity by Regulating Relocation of EDR1 in Arabidopsis

机译:增强的抗病性4与CLATHRIN HEAVY CHAIN2结合,并通过调节拟南芥中EDR1的迁移来调节植物的免疫力。

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摘要

Obligate biotrophs, such as the powdery mildew pathogens, deliver effectors to the host cell and obtain nutrients from the infection site. The interface between the plant host and the biotrophic pathogen thus represents a major battleground for plant-pathogen interactions. Increasing evidence shows that cellular trafficking plays an important role in plant immunity. Here, we report that Arabidopsis thaliana ENHANCED DISEASE RESISTANCE4 (EDR4) plays a negative role in resistance to powdery mildew and that the enhanced disease resistance in edr4 mutants requires salicylic acid signaling. EDR4 mainly localizes to the plasma membrane and endosomal compartments. Genetic analyses show that EDR4 and EDR1 function in the same genetic pathway. EDR1 and EDR4 accumulate at the penetration site of powdery mildew infection, and EDR4 physically interacts with EDR1, recruiting EDR1 to the fungal penetration site. In addition, EDR4 interacts with CLATHRIN HEAVY CHAIN2 (CHC2), and edr4 mutants show reduced endocytosis rates. Taken together, our data indicate that EDR4 associates with CHC2 and modulates plant immunity by regulating the relocation of EDR1 in Arabidopsis.
机译:专性生物营养菌,例如白粉病病原体,将效应子传递至宿主细胞并从感染部位获得营养。因此,植物宿主与生物营养性病原体之间的界面代表了植物与病原体相互作用的主要战场。越来越多的证据表明,细胞运输在植物免疫中起着重要作用。在这里,我们报道拟南芥增强疾病抵抗力4(EDR4)在抗白粉病中起负作用,并且在edr4突变体中增强的疾病抵抗力需要水杨酸信号传导。 EDR4主要位于质膜和内体区室。遗传分析表明EDR4和EDR1在相同的遗传途径中起作用。 EDR1和EDR4积累在白粉病感染的渗透位点,并且EDR4与EDR1发生物理相互作用,将EDR1募集到真菌的渗透位点。此外,EDR4与CLATHRIN HEAVY CHAIN2(CHC2)相互作用,并且edr4突变体显示出降低的内吞率。两者合计,我们的数据表明EDR4与CHC2缔合,并通过调节EDR1在拟南芥中的重新定位来调节植物的免疫力。

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