Abstract
A new defoliating disease with severe leaf spot of Japanese persimmon (Diospyros kaki) was found in Shimane Prefecture. A fungus, isolated from the ascospores that had formed on the leaf spot, was demonstrated to reproduce the symptoms on leaves and described as a new species, Adisciso kaki, based on morphological and molecular phylogenetic analyses. This fungus is characterized by small ascomata without clypeus, obclavate to broadly cylindrical asci with an amyloid apical apparatus, and hyaline ascospores with a submedian septum. We coined the name black leaf spot (Kurohoshi-rakuyo-byo, in Japanese) for the new disease.
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Acknowledgments
We thank Dr. Takao Kobayashi, formerly of Tokyo University of Agriculture, for kindly supplying the fungal strain collected in Matsudo, Chiba Pref., Japan and to Dr. Yuuri Hirooka, Forestry and Forest Products Research Institute, Ibaraki, Japan, for assistance in fungal isolation.
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Yamamoto, J., Tanaka, K., Ohtaka, N. et al. Black leaf spot of Japanese persimmon (Diospyros kaki), a new disease caused by Adisciso kaki sp. nov.. J Gen Plant Pathol 78, 99–105 (2012). https://doi.org/10.1007/s10327-012-0367-9
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DOI: https://doi.org/10.1007/s10327-012-0367-9