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首页> 外文期刊>FEMS Microbiology Letters >Spatial and temporal expression patterns of Avr1b-1 and defense-related genes in soybean plants upon infection with Phytophthora sojae
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Spatial and temporal expression patterns of Avr1b-1 and defense-related genes in soybean plants upon infection with Phytophthora sojae

机译：大豆疫霉感染后Avr1b-1和防御相关基因在大豆中的时空表达模式

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摘要

The Avr1b locus is required for avirulence of the oomycete pathogen Phytophthora sojae on soybeans carrying resistance gene Rps1b. One of the Avr genes of the locus (Avr1b-1) was shown to encode an elicitor. We have analyzed the spatial and temporal expression patterns of Avr1b-1 in comparison to defense-related genes induced in soybean. Avr1b-1 expression was detectable mainly in close proximity to the site of infection, in wound-inoculated hypocotyls as well as in roots infected with zoospores. Usually, in compatible interactions, higher expression levels of Avr1b-1 were observed in roots when compared with incompatible P. sojae-soybean interactions, whereas neither the timing nor the amount of transcript accumulation of defense-related genes showed cultivar-specific differences. In contrast, the PsojNIP gene encoding a proposed virulence factor was expressed only during the necrotrophic phase in the compatible interaction.
机译：Avr1b基因座是携带抗性基因Rps1b的大豆卵菌病原性大豆疫霉菌无毒力所必需的。已显示该基因座的Avr基因之一（Avr1b-1）编码激发子。我们已经分析了与大豆诱导的防御相关基因相比，Avr1b-1的时空表达模式。主要在感染部位附近，伤口接种的下胚轴以及被游动孢子感染的根中检测到Avr1b-1表达。通常，在相容的相互作用中，与不相容的大豆大豆-大豆相互作用相比，在根部观察到更高的Avr1b-1表达水平，而防御相关基因的转录时间和转录积累量均未显示出特定品种的差异。相比之下，编码拟议的毒力因子的PsojNIP基因仅在相容相互作用中的坏死营养阶段表达。

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