SAKURANETIN, A FLAVANONE PHYTOALEXIN FROM ULTRAVIOLET-IRRADIATED RICE LEAVES

被引：228

作者：

KODAMA, O ^{[1
]}

MIYAKAWA, J ^{[1
]}

AKATSUKA, T ^{[1
]}

KIYOSAWA, S ^{[1
]}

机构：

[1] KYOWA HAKKO KOGYO CO LTD,TSUKUBA RES LABS,TSUKUBA,IBARAKI 305,JAPAN

来源：

PHYTOCHEMISTRY | 1992年 / 31卷 / 11期

关键词：

PYRICULARIA-ORYZAE; RICE PHYTOALEXIN; SAKURANETIN; FLAVANONE; ULTRAVIOLET IRRADIATION;

D O I：

10.1016/S0031-9422(00)97532-0

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A new rice phytoalexin, sakuranetin (5,4'-dihydroxy-7-methoxyflavanone) was isolated from ultraviolet-irradiated rice leaves. The ED50 value of sakuranetin against spore germination of Pyricularia oryzae was approximately 15 ppm. A marked incorporation of [C-14]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. oryzae was much higher than in a susceptible cultivar.

引用

页码：3807 / 3809

页数：3

共 15 条

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