Regulatory role of DREB transcription factors in plant drought, salt and cold tolerance

摘要

rd29A gene of Arabidopsis encodes a LEA-like hydrophilic protein, its expression is induced by drought, high - salt and cold stress. In the promoter region of rd29A gene, there are 2 DRE cis-acting elements involved in responses to these environmental stresses. 5 cDNAS (DREB1A ～ C and DREB2A ～ B) encoding DREB transcription factors, which specifically bind to DRE element and control the expression of reporter gene under drought, high-salt and stress, have Been isolated by One-Hybrid screening method and with DRE element of rd29A promoter.