期刊
PLANT PHYSIOLOGY AND BIOCHEMISTRY
卷 76, 期 -, 页码 29-35出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.plaphy.2013.12.018
关键词
Drought; Polyamines; Arginine decarboxylase; Abscisic acid; Lotus tenuis
资金
- ANPCyT [PICTO 2011-0203, PICT 2011-1612]
- SGCyT-UNNE [PI 014/10]
- CONICET [PIP 0980]
- CONICET
The accumulation of putrescine (Put) and increased arginine decarboxylase (ADC, EC 4.1.1.19) activity levels in response to osmotic stress has been reported; however, the biological meaning of this increase remains unclear. To obtain new insights into these questions, we studied the drought response of a transgenic Lotus tenuis line that expresses the oat ADC gene, which is driven by the stress-inducible pRD29A promoter. This line contains high levels of Put with no changes in spermidine and spermine contents, even under water deficits. Our results indicate that the biochemical and morphological responses to dehydration correlate with the Put level and provide evidence that Put controls the ABA content in response to drought by modulating ABA biosynthesis at the transcriptional level. (C) 2013 Elsevier Masson SAS. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据