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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Gene Review: 

CBF4  -  dehydration-responsive element-binding...

Arabidopsis thaliana

Synonyms: C-repeat-binding factor 4, DEHYDRATION-RESPONSIVE ELEMENT-BINDING PROTEIN 1D, DREB1D, MSG15.8, MSG15_8
 
 
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High impact information on CBF4/DREB1D

  • Although the more recently discovered ABA-inducible CBF4 transcription factor might have accounted for this, we show here that CBF1-3 transcript levels also increase in response to elevated ABA levels [1].
  • Here, we report the isolation of an apparent homolog of the CBF/DREB1 proteins (CBF4) that plays the equivalent role during drought adaptation [2].
  • Overexpression of CBF4 in transgenic Arabidopsis plants results in the activation of C-repeat/dehydration-responsive element containing downstream genes that are involved in cold acclimation and drought adaptation [2].
  • In contrast to the three already identified CBF/DREB1 homologs, which are induced under cold stress, CBF4 gene expression is up-regulated by drought stress, but not by low temperature [2].
 

Biological context of CBF4/DREB1D

  • Because of the physiological similarity between freezing and drought stress, and the sequence and structural similarity of the CBF/DREB1 and the CBF4 proteins, we propose that the plant's response to cold and drought evolved from a common CBF-like transcription factor, first through gene duplication and then through promoter evolution [2].

References

  1. Abscisic acid induces CBF gene transcription and subsequent induction of cold-regulated genes via the CRT promoter element. Knight, H., Zarka, D.G., Okamoto, H., Thomashow, M.F., Knight, M.R. Plant Physiol. (2004) [Pubmed]
  2. Transcription factor CBF4 is a regulator of drought adaptation in Arabidopsis. Haake, V., Cook, D., Riechmann, J.L., Pineda, O., Thomashow, M.F., Zhang, J.Z. Plant Physiol. (2002) [Pubmed]
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