PMID:10096298

Citation	Kasuga, M, Liu, Q, Miura, S, Yamaguchi-Shinozaki, K and Shinozaki, K (1999) Improving plant drought, salt, and freezing tolerance by gene transfer of a single stress-inducible transcription factor. Nat. Biotechnol. 17:287-91
Abstract	Plant productivity is greatly affected by environmental stresses such as drought, salt loading, and freezing. We reported previously that a cis-acting promoter element, the dehydration response element (DRE), plays an important role in regulating gene expression in response to these stresses. The transcription factor DREB1A specifically interacts with the DRE and induces expression of stress tolerance genes. We show here that overexpression of the cDNA encoding DREB1A in transgenic plants activated the expression of many of these stress tolerance genes under normal growing conditions and resulted in improved tolerance to drought, salt loading, and freezing. However, use of the strong constitutive 35S cauliflower mosaic virus (CaMV) promoter to drive expression of DREB1A also resulted in severe growth retardation under normal growing conditions. In contrast, expression of DREB1A from the stress inducible rd29A promoter gave rise to minimal effects on plant growth while providing an even greater tolerance to stress conditions than did expression of the gene from the CaMV promoter.
Links	PubMed Online version:10.1038/7036
Keywords	Arabidopsis/genetics; Arabidopsis Proteins; Blotting, Northern; Disasters; Gene Expression; Phenotype; Plants, Genetically Modified; Promoter Regions, Genetic; Sodium Chloride/metabolism; Temperature; Time Factors; Transcription Factors/genetics
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Gene product	Qualifier	GO ID	GO term name	Evidence Code	with/from	Aspect	Notes	Status
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