Irieda Hiroki, Ogawa Suthitar, Takano Yoshitaka
a Graduate School of Agriculture, Kyoto University , Kyoto , Japan.
Plant Signal Behav. 2016;11(2):e1137407. doi: 10.1080/15592324.2015.1137407.
We identified virulence-related effectors of a hemibiotrophic fungal pathogen Colletotrichum orbiculare, and found that a novel interface was generated by a biotrophic interaction between C. orbiculare and the host cucumber, in which the effectors secreted from the pathogen accumulated preferentially. The interface was located around the biotrophic primary hyphal neck. Here, we showed that C. orbiculare also developed this interface in a biotrophic interaction with melon, which belongs to Cucurbitaceae. Furthermore, C. orbiculare developed interface in the interaction with a susceptible plant, Nicotiana benthamiana, which is distantly related to Cucurbitaceae, suggesting that the spatial regulation strategy for effectors in C. orbiculare is not specific to cucumber; rather, it is conserved among the various plants that are susceptible to this pathogen.
我们鉴定了半活体营养型真菌病原体圆形炭疽菌（Colletotrichum orbiculare）的毒力相关效应蛋白，并发现圆形炭疽菌与寄主黄瓜之间的活体营养相互作用产生了一个新的界面，病原体分泌的效应蛋白优先在该界面积累。该界面位于活体营养型初生菌丝颈部周围。在此，我们表明圆形炭疽菌在与属于葫芦科的甜瓜的活体营养相互作用中也形成了这个界面。此外，圆形炭疽菌在与一种与葫芦科亲缘关系较远的感病植物本氏烟草（Nicotiana benthamiana）的相互作用中也形成了界面，这表明圆形炭疽菌中效应蛋白的空间调控策略并非黄瓜所特有；相反，它在对该病原体敏感的各种植物中是保守的。
