Anti-rice blast [Pyricularia oryzae] activity and resistance induction of C-18 oxygenated fatty acids

The effects of oxygenated fatty acids were recorded as ED 50 values for inhibition of germination and germ tube elongation of the spores of rice blast fungus. The oxygenated fatty acids were potent inhibitors between 20-40 ppm. When Sasanishiki rice plants were treated with the major components, epo...

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Bibliographic Details
Published in:	Bioscience, biotechnology, and biochemistry Vol. 57; no. 4; pp. 611 - 613
Main Authors:	Namai, T. (Science Univ. of Tokyo (Japan). Faculty of Science), Kato, T, Yamaguchi, Y, Hirukawa, T
Format:	Journal Article
Language:	English
Published:	Tokyo Taylor & Francis 1993 Japan Society for Bioscience Biotechnology and Agrochemistry Oxford University Press
Subjects:	ACIDE GRAS ACIDOS GRASOS Agronomy. Soil science and plant productions Biological and medical sciences FATTY ACIDS FEUILLE FONGICIDE Fundamental and applied biological sciences. Psychology FUNGICIDAS FUNGICIDES Genetics and breeding of economic plants HOJAS LEAVES ORYZA SATIVA Pest resistance Plant pathogens PYRICULARIA ORYZAE Varietal selection. Specialized plant breeding, plant breeding aims Monocotyledones Plant pathogen Induction Alcohol Biological activity Fungi Infection Oryza sativa Antifungal agent Microorganism resistance Gramineae Angiospermae Epoxide Unsaturated fatty acid Defense mechanism Pyricularia oryzae Spermatophyta Fungi Imperfecti Thallophyta
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Summary:	The effects of oxygenated fatty acids were recorded as ED 50 values for inhibition of germination and germ tube elongation of the spores of rice blast fungus. The oxygenated fatty acids were potent inhibitors between 20-40 ppm. When Sasanishiki rice plants were treated with the major components, epoxy-fatty acids, the rate of susceptible lesions formed on the leaves were lower than those of non-treated control, indicating induction of resistance to the pathogen by the epoxides in the plants. In addition, it was shown by an uptake experiment using [l- 14 C] derivatives that the epoxy-fatty acids were clearly incorporated into rice leaves.
Bibliography:	9402310 H20 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0916-8451 1347-6947
DOI:	10.1271/bbb.57.611