A novel DREB transcription factor from Halimodendron halodendron leads to enhance drought and salt tolerance in Arabidopsis

文献类型： 外文期刊

第一作者： Ma, J. -T.

作者： Ma, J. -T.;Wang, Z. -L.;Ma, J. -T.;Yin, C. -C.;Guo, Q. -Q.;Zhou, M. -L.;Wu, Y. -M.;Guo, Q. -Q.

作者机构：

关键词： abiotic stress;abscisic acid;auxin;cytokinin;gibberelic acid;expression pattern;transcriptional regulation;transgenic plant

期刊名称：BIOLOGIA PLANTARUM （ 影响因子：1.747； 五年影响因子：2.146 ）

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收录情况： SCI

摘要： A new member of the APETALA2/ethylene responsive element binding protein (AP2/EREBP) transcription factor family, HhDREB2, was isolated from Halimodendron halodendron. Based on the similarity of the AP2/ERF domain, HhDREB2 was classified into A-5 group of the DREB subfamily. The expression of HhDREB2 gene was induced by drought, high salinity, and low temperature, but not by exogenous plant hormones. Trans-activity assay demonstrated that HhDREB2 gene encodes a transcription activator. Furthermore, over-expression of HhDREB2 gene under the stress-inducible rd29A promotor in Arabidopsis resulted in enhanced tolerance to salt and drought stresses. The overall results reveal that HhDREB2 functioned as important transcription factor in regulation of stress-responsive signaling in plants and may be used for improving plant tolerance to abiotic stresses.

分类号： Q94

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