UV-B Stress-Induced ABA Production in Arabidopsis thaliana Mutants Defective in Ethylene Signal Transduction Pathway

被引：14
|
作者：
Rakitin, V. Yu. [1 ]
Karyagin, V. V. [1 ]
Rakitina, T. Ya. [1 ]
Prudnikova, O. N. [1 ]
Vlasov, P. V. [1 ]
机构：
[1] Russian Acad Sci, Timiryazev Inst Plant Physiol, Moscow 127276, Russia
来源：
RUSSIAN JOURNAL OF PLANT PHYSIOLOGY | 2008年 / 55卷 / 06期
关键词：
Arabidopsis thaliana; etr1-1; ctr1-1; UV-B; ABA;
D O I：
10.1134/S1021443708060174
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
In this study, we examined the influence of UV-B radiation (280-320 nm) on ABA accumulation in 14-day-old Arabidopsis thaliana (L.) Heynh plants of wild type (WT), ethylene receptor mutant (etr1-1), and mutant with a constitutively active ethylene signal transduction pathway (ctr1-1). ABA content in nonirradiated WT plants was twice higher than in each mutant. UV-B irradiation caused dose-dependent ABA accumulation in WT plants. In the etr1-1 mutant, the amount of accumulated ABA was significantly less. In the ctr1-1 mutant, ABA content didn't increase after UV-B irradiation. These data suggest that start of stress-induced ABA formation requires the adjustable ethylene signal pathway. In the ctr1-1 mutant, a constitutively active (nonadjustable) ethylene signal pathway blocks stress-induced ABA accumulation.
引用
收藏
页码：854 / 856
页数：3
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