First report of Mycopappus alni in Japan: species identification of the pathogenic fungus of a frosty mildew disease in Crataegus chlorosarca |
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| Authors: | Yukiko Takahashi Norihisa Matsushita Taizo Hogetsu Yukio Harada |
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| Institution: | (1) Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan;(2) Faculty of Agriculture and Life Science, Hirosaki University, Aomori, Japan |
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| Abstract: | A leaf disease similar to frosty mildew disease caused by Mycopappus species was detected on the leaves of Crataegus chlorosarca in Tomakomai, Hokkaido Prefecture. From morphological observations and gene analyses of rDNA-ITS, the fungus was identified
as M. alni, which causes leaf blight disease on Alnus spp., Betula spp., and a Pyrus sp. in North America and Turkey. This is the first report of M. alni in Japan and Crataegus as its new host genus. |
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| Keywords: | Crataegus chlorosarca Frosty mildew Mycopappus alni Taxonomy |
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