期刊
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
卷 474, 期 4, 页码 736-741出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbrc.2016.04.148
关键词
Ascorbic acid; Dof protein; Salt overly sensitive; Tomato; Transcription factor
资金
- 973 Project [2011CB100600]
- Natural Science Foundation of China [31171974, 31501745]
Ascorbic acid (AsA) is an important antioxidant and its biosynthesis in plants has extensively been investigated. However, the key regulatory factors controlling the accumulation of AsA remain elusive. Here we report that tomato SlDof22, a member of the Dof family, negatively regulated AsA accumulation in tomato. RNA interference (RNAi) of SlDof22 in transgenic lines induced AsA levels, and affected the expression of genes in the D-mannose/L-galactose pathway and AsA recycling. In addition, SlSOS1 was significantly down-regulated in SlDof22 RNAi plants which resulted in reduced tolerance to salt stress. We further found that SlDof22 could bind to the promoter sequence of SlSOS1 gene by yeast one-hybrid analysis. Taken together, our data suggested that the Dof transcription factor SlDof22 involved in ascorbate accumulation and salt stress response in tomato. (C) 2016 Elsevier Inc. 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