Curvularia lunataによるサトウキビ斑点病(新称)

A new leaf spot disease of sugarcane (Saccharum officinarum L.) was found in Tokunoshima, Kagoshima Prefecture, Japan in June 2005. Reddish-brown and spindle-shaped lesions formed on the leaves of mericlone seedlings grown in the glasshouse. The causal fungus was exclusively isolated from the lesions, and typical symptoms were reproduced after inoculation with the isolate. The causal fungus was identified morphologically and phylogenetically as Curvularia lunata (Wakker) Boedijn. Hyphae grew at 10-38°C with optimum growth at 30°C. The name leaf spot of sugarcane, in Japanese “Hanten-byo”, is proposed for the disease.