Titre du document / Document title
Sakuranetin, a flavonone phytoalexin from ultraviolet-irradiated rice leaves
Auteur(s) / Author(s)
KODAMA O. (1) ;
MIYAKAWA J. (1) ;
AKATSUKA T. (1) ;
KIYOSAWA S. ;
Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)
(1) Ibaraki univ., fac. agriculture, 3998 Ami, Ibaraki 300-03, JAPON
Résumé / Abstract
A new rice phytoalexin, sakuranetin (5,4'-dihydroxy-7-methoxyflavanone) was isolated from ultravioletirradiated rice leaves. The ED
50 value of sakuranetin against spore germination of Pyricularia oryxae was approximately 15 ppm. A marked incorporation of [
14C]phenylalanine into sakuranetin was observed in ultraviolet-irradiated rice leaves. Sakuranetin has also been observed in blast-infected rice leaves and the content in a resistant cultivar after infection with P. oyzae was much higher than in a susceptible cultivar
Revue / Journal Title
Phytochemistry
ISSN
0031-9422
Source / Source
1992, vol. 31, n
o11, pp. 3807-3809 (15 ref.)
Langue / Language
Anglais
Editeur / Publisher
Elsevier, Amsterdam, PAYS-BAS
(1961)
(Revue)
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Localisation / Location
INIST-CNRS, Cote INIST : 9408, 35400003095529.0270
Nº notice refdoc (ud4) : 4682303
