Oxford University Press (OUP), Plant & Cell Physiology, 12(52), p. 2136-2146
DOI: 10.1093/pcp/pcr143
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In plants, osmotic stress-responsive transcriptional regula-tion depends mainly on two major classes of cis-acting elements found in the promoter regions of stress-inducible genes: ABA-responsive elements (ABREs) and dehydration-responsive elements (DREs). ABRE has been shown to perceive ABA-mediated osmotic stress signals, whereas DRE is known to be involved in an ABA-independent pathway. Previously, we reported that the transcription factor DRE-BINDING PROTEIN 2A (DREB2A) regulates DRE-mediated transcription of target genes under osmotic stress conditions in Arabidopsis (Arabidopsis thaliana). However, the transcriptional regulation of DREB2A itself remains largely uncharacterized. To elucidate the transcrip-tional mechanism associated with the DREB2A gene under osmotic stress conditions, we generated a series of truncated