Botrytis cinereaによるメランポジウムおよびバグマノキ灰色かび病の発生 (新称)

抄録

Water-soaked lesions on petal and leaf spots were observed on melampodium (Melampodium paldosum), and inflorescence rot appeared on the smoke tree (Cotinus coggygria) in Yamagata prefecture, Japan. The pathogenicity of each isolate obtained from diseased plants to host plants was demonstrated by artificial inoculation. These isolates were identified as Botrytis cinerea on the basis of morphological and cultural characteristics and the sequence of the internal transcribed spacer regions of ribosomal DNA (rDNA-ITS) homology. Because no disease of these plants caused by B. cinerea has ever been reported in Japan, we propose to name the disease gray mold (“haiiro-kabi-byo” in Japanese) of melampodium and smoke tree.