Studies on light-induced resistance of cucumber against host specific toxin producing pathogen

研究了红光照射对黄瓜褐斑病病斑发展的影响。黄瓜接种C.在自然光下培养，形成大的坏死灶。然而，在红光下，损伤形成被显著抑制。在感染炭疽菌的黄瓜中没有观察到这种红光诱导的抗性。红光诱导黄瓜对黄瓜枯萎病的抗性。植物激活剂Bion通过激活水杨酸依赖的抗性途径，显著地抑制了黄瓜褐腐病菌的生长。

In this study, effect of red light irradiation on lesion development by Corynespora cassiicola in cucumber was investigated. When cucumber inoculated with C. cassiicola kept under natural light, large necrotic lesions were formed. Under red light, however, lesion formation was significantly inhibited. Such red light induced resistance was not observed in cucumber infected with Colletotrichum.orbiculare. Red light-induced resistance of cucumber against C. cassiicola was significantly inhibited by the pre-treatment with plant activator Bion which activate salycilic acid-dependent resistance pathway.