Further Evidence that Ramularia-type Conidia in vivo Plays a Role as a Secondary Inoculum of Mycosphaerella nawae

감나무 둥근무늬낙엽병균 Mycosphaerella nawae 분생포지의 2창 전염원으로서 역할

The characteristic Ramularia type conidia of Mycosphaerella nawae were formed on naturally infected leaves. Artificial inoculation with the conidia induced typical symptom on leaves, which was not distinguishable from those of ascospore infection, which has been considered as a primary inoculum source in nature. Also the morphology of the conidia produced on PDA was not different from those formed on artificially inoculated leaves or on naturally infected leaves at later stage of symptom development. Accordingly, we report the role of the conidia as a secondary inoculum of the circular leaf spot pathogen of persimmon for the first time.