A potent attractant of zoospores ofAphanomyces cochlioides isolated from its host,Spinacia oleracea |
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| Authors: | T. Horio Y. Kawabata T. Takayama S. Tahara J. Kawabata Y. Fukushi H. Nishimura J. Mizutani |
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| Affiliation: | (1) Department of Agricultural Chemistry, Faculty of Agriculture, Hokkaido University, Kita-ku, 060 Sapporo, (Japan);(2) Department of Bioscience and Technology, School of Engineering, Hokkaido Tokai University, 005 Sapporo, (Japan) |
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| Abstract: | A highly potent attractant of zoospores ofAphanomyces cochlioides, a causal fungus of the root rot disease of spinach (Spinacia oleracea), was isolated from spinach roots, and its structure was determined by spectroscopic evidence and chemical synthesis as cochliophilin A (5-hydroxy-6,7-methylenedioxyflavone,1). A chromosorb particle prepared by soaking in solution of1 showed a potent attracting activity toward the zoospores using concentrations of1 above 10–9 or 10–10 M. |
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| Keywords: | Aphanomyces cochlioides Spinacia oleracea zoospore attractant cochliophilin A |
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