First report of phytophthora rot on <Emphasis Type="Italic">Wasabia japonica</Emphasis> caused by <Emphasis Type="Italic">Phytophthora drechsleri</Emphasis> in Japan |
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| Authors: | Ayaka Minoshima Jun Takeuchi Tsuyoshi Ono Satoshi Kagiwada Hiromichi Horie Yuuri Hirooka |
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| Institution: | 1.Department of Clinical Plant Science, Faculty of Bioscience,Hosei University,Koganei,Japan;2.Agro-Environment Division,Tokyo Metropolitan Agriculture and Forestry Research Center,Tachikawa,Japan;3.Agricultural Pest Division,Ogasawara Branch of Tokyo Metropolitan Agriculture and Forestry Research Center Komagari,Ogasawara,Japan |
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| Abstract: | In September 2014, Phytophthora rot on wasabi plants Wasabia japonica (Miq.) Matsum.] was found for the first time in the city of Okutama, Tokyo, Japan. A Phytophthora sp. strain was constantly isolated from brown stem bases and rhizomes of infected plants. The same symptoms as those observed in the field were produced in vitro through inoculation of test plants with the isolated Phytophthora sp. The fungus was identified as Phytophthora drechsleri based on morphological and DNA sequence comparison. Phytophthora rot, “eki-byo” in Japanese, is proposed for this disease common name. |
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