ZmDBF3, a Novel Transcription Factor from Maize (Zea mays L.), Is Involved in Multiple Abiotic Stress Tolerance

文献类型： 外文期刊

第一作者： Zhou, Wei

作者： Zhou, Wei;Jia, Cheng-Guo;Wu, Xian;Yu, Gang;Zhang, Xiang-Hui;Liu, Jin-Liang;Pan, Hong-Yu;Zhou, Wei;Hu, Rui-Xue;Wu, Xian

作者机构：

关键词： ZmDBF3;Maize;Abiotic stress;Yeast expression;Arabidopsis

期刊名称：PLANT MOLECULAR BIOLOGY REPORTER （ 影响因子：1.595； 五年影响因子：2.042 ）

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年卷期：

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收录情况： SCI

摘要： The dehydration-responsive element-binding (DREB) transcription factors play important roles in regulation of plant responses to abiotic stresses. In the present study, ZmDBF3, a novel DREB transcription factor gene from maize (Zea mays L.), was cloned and characterized. Sequence analyses revealed that ZmDBF3 is classified into A-4 group. It was demonstrated that ZmDBF3 was induced in by salt, drought, cold, and high temperature, as well as by signaling molecules abscisic acid (ABA), but no significant changes were observed under salicylic acid (SA) and methyl jasmonate (MeJA) conditions. The results of transient expression assays and transcriptional activity analysis revealed that ZmDBF3 is a nuclear protein with transcriptional activity. Overexpression of ZmDBF3 in yeast (Saccharomyces cerevisiae) exhibited increased survival rate under NaCl, KCl, Na2CO3, NaHCO3, PEG6000, freezing, and sorbitol treatment, compared with the control. Furthermore, ectopic expression of ZmDBF3 in Arabidopsis significantly enhanced tolerance to salt, drought, and freezing tolerance. Taken together, the findings indicated that the ZmDBF3 is a novel member of DREB transcription factor which may act as a regulatory factor involved in multiple stress response pathways.

分类号： Q94`Q7

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