Pythium wilt of lettuce caused by <Emphasis Type="Italic">Pythium uncinulatum</Emphasis> in Japan |
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| Authors: | Katsunari Matsuura Takeshi Kanto Motoaki Tojo Shihomi Uzuhashi Makoto Kakishima |
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| Institution: | (1) Hyogo Prefectural Technology Center for Agriculture, Forestry and Fisheries, Kasai, Hyogo, Japan;(2) Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 599-8531, Japan;(3) Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan; |
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| Abstract: | Pythium wilt of lettuce was found in two fields in Hyogo Prefecture, Japan in January 2007. On the basis of morphological
characteristics and the rDNA-ITS sequences, the causal organism was identified as Pythium uncinulatum, unknown in Japan. A pot inoculation test demonstrated that P. uncinulatum was pathogenic to lettuce and garland chrysanthemum (both in Compositae), but no symptoms developed on nine species of vegetable
plants from Amaranthaceae, Apiaceae, Brassicaceae, Cucurbitaceae, Liliaceae, or Solanaceae. |
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