Induction of ABA 8'-hydroxylase by (+)-S-,(-)-R- and 8',8',8'-trifluoro-S-abscisic acid in suspension cultures of potato and Arabidopsis

被引：21

作者：

Windsor, ML ^{[1
]}

Zeevaart, JAD ^{[1
]}

机构：

[1] MICHIGAN STATE UNIV,DOE,PLANT RES LAB,E LANSING,MI 48824

来源：

PHYTOCHEMISTRY | 1997年 / 45卷 / 05期

关键词：

Arabidopsis thaliana; Solanum tuberosum; potato; ABA 8'-hydroxylase; abscisic acid; phaseic acid;

D O I：

10.1016/S0031-9422(97)00022-8

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：

Suspension cultures of potato and Arabidopsis were incubated with 50 mu M of (+)-ABA and (-)-ABA for 3 hr. These pretreatments were found to increase the rate, by two- to seven-fold, of formation of [H-2(6)] phaseic acid (PA) from [H-2(6)] ABA, applied in a subsequent incubation. Pretreatment with trifluoro-ABA had a higher efficacy, increasing the rate of conversion 15-fold. Suspension culture cells that had been dehydrated and then rehydrated in the presence of [H-2(6)] ABA displayed a much lower enhancement of PA formation. We conclude that ABA induces its own oxidative catabolism in suspension cultures. (C) 1997 Elsevier Science Ltd. All rights reserved.

引用

页码：931 / 934

页数：4

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