Ve1-mediated resistance against Verticillium does not involve a hypersensitive response in Arabidopsis.
Ve1-mediated resistance against Verticillium does not involve a hypersensitive response in Arabidopsis.
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DOI：
10.1111/mpp.12042
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发表时间：
2013-09
影响因子：
4.9
通讯作者：
Zhao Zhang;H. P. van Esse;M. van Damme;E. Fradin;Chun-Ming Liu;B. Thomma
中科院分区：
文献类型：
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作者：
Zhao Zhang;H. P. van Esse;M. van Damme;E. Fradin;Chun-Ming Liu;B. Thomma
植物免疫受体对病原体效应子的识别导致免疫应答的激活，所述免疫应答通常包括过敏性应答（HR）：围绕试图进入病原体的位点的快速且局部的宿主细胞死亡。我们先前已经证明，番茄免疫受体Ve 1对大丽轮枝菌效应蛋白Ave 1的识别触发了番茄和烟草中的HR。此外，我们已经证明，番茄Ve 1提供了黄萎病抗性拟南芥Ave 1识别后。在这项研究中，我们调查了是否在拟南芥中的共表达的Ve 1和Ave 1的结果在HR，这可能有助于正向遗传学筛选。令人惊讶的是，我们发现，Ve 1和Ave 1的共表达不会诱导拟南芥中的HR。这些结果表明，在番茄和烟草中，HR可能是Ve 1/Ave 1诱导的免疫信号传导的结果，但不是绝对需要的黄萎病抗性。
The recognition of pathogen effectors by plant immune receptors leads to the activation of immune responses that often include a hypersensitive response (HR): rapid and localized host cell death surrounding the site of attempted pathogen ingress. We have demonstrated previously that the recognition of the Verticillium dahliae effector protein Ave1 by the tomato immune receptor Ve1 triggers an HR in tomato and tobacco. Furthermore, we have demonstrated that tomato Ve1 provides Verticillium resistance in Arabidopsis upon Ave1 recognition. In this study, we investigated whether the co-expression of Ve1 and Ave1 in Arabidopsis results in an HR, which could facilitate a forward genetics screen. Surprisingly, we found that the co-expression of Ve1 and Ave1 does not induce an HR in Arabidopsis. These results suggest that an HR may occur as a consequence of Ve1/Ave1-induced immune signalling in tomato and tobacco, but is not absolutely required for Verticillium resistance.