The wheat salinity-induced R2R3-MYB transcription factor TaSIM confers salt stress tolerance in Arabidopsis thaliana

被引：41

作者：

Yu, Yuehua ^{[1
]}

Ni, Zhiyong ^{[1
]}

Chen, Quanjia ^{[1
]}

Qu, Yanying ^{[1
]}

机构：

[1] Xinjiang Agr Univ, Coll Agron, 311 Nongda East St, Urumqi 830052, Peoples R China

来源：

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS | 2017年 / 491卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Wheat; MYB transcription factor; Salt stress; Root growth; FACTOR GENE; DROUGHT TOLERANCE; EXPRESSION;

D O I：

10.1016/j.bbrc.2017.07.150

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：

MYB transcription factors are a large family of proteins involved in plant development and responses to stress. In this study, the wheat salinity-induced R2R3-MYB transcription factor TaSIM was functionally characterized, with a focus on its role in salt stress tolerance. TaSIM protein enters the nucleus and binds to the MYB-binding site II motif. Expression analysis revealed that TaSIM was induced by drought, high salinity, low temperature, and abscisic acid treatment. Overexpression of TaSIM improved salt stress tolerance in transgenic plants. Furthermore, the transcript levels of genes involved in abscisic acid (ABA)-dependent (RD22) and ABA-independent (RD29A) signaling were higher in TaSIM-overexpressing plants than in the wild type. These results suggest that TaSIM positively modulates salt stress tolerance and has potential applications in molecular breeding to enhance salt tolerance in crops. (C) 2017 Elsevier Inc. All rights reserved.

引用

页码：642 / 648

页数：7

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