Sunflower sesquiterpene lactone models induce Orobanche cumana seed germination

被引：48
|
作者：
de Luque, AP
Galindo, JCG
Macías, FA
Jorrín, J
机构：
[1] Univ Cordoba, ETSIAM, Dept Bioquim & Biol Mol, E-14080 Cordoba, Spain
[2] Univ Cadiz, Fac Ciencias, Dept Quim Organ, Cadiz 11510, Spain
来源：
PHYTOCHEMISTRY | 2000年 / 53卷 / 01期
关键词：
Orobanche spp; O-cumana; Orobanchaceae; sunflower; germination stimulants; allelopathy; sesquiterpene lactone; parthenolides; guaianolides;
D O I：
10.1016/S0031-9422(99)00485-9
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：
Six sunflower sesquiterpene lactone models which share structural features of the lactone rings of strigol and its synthetic analogues, the GR family, with different conformational flexibilities were tested as Orobanche cumana germination stimulants. Among them, parthenolide and 3,5-dihydroxydehydrocostus-lactone significantly increased O. cumana germination, presenting higher activity than GR-24, used as a standard in the germination bioassay. The effect of these two compounds is species-specific, showing no germination stimulant activity on other Orobanche spp. tested (O. crenata, O. ramosa and O. aegyptiaca). Data presented are discussed in terms of a structure-activity relationship. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：45 / 50
页数：6
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