Functional Analysis of Rice DREB1/CBF-type Transcription Factors Involved in Cold-responsive Gene Expression in Transgenic Rice

The transcription factors dehydration-responsive element-binding protein 1s (DREB1s)/C-repeat-binding factors (CBFs) specifically interact with the DRE/CRT cis-acting element and control the expression of many stress-inducible genes in Arabidopsis. The genes for DREB1 orthologs, OsDREB1A and OsDREB1B from rice, are induced by cold stress, and overexpression of DREB1 or OsDREB1 induced strong expression of stress-responsive genes in transgenic Arabidopsis plants, resulting in increased tolerance to high-salt and freezing stresses. In this study, we generated transgenic rice plants overexpressing the OsDREB1 or DREB1 genes. These transgenic rice plants showed not only growth retardation under normal growth…

• UO
  University of Tokyo
• R
  RIKEN
• JI
  Japan International Research Center for Agricultural Sciences