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J Plant Physiol. 2004 Oct;161(10):1171-6.

Expression of a sweet cherry DREB1/CBF ortholog in Arabidopsis confers salt and freezing tolerance.

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1
JST, Yamagata Regional Joint Research Project, 423 Shimaminami, Sagae, Yamagata 991-0043, Japan. kite@affrc.go.jp

Abstract

Dehydration responsive element binding protein 1 (DREB1)/C-repeat binding factor (CBF) induces the expression of many stress-inducible genes in Arabidopsis. We have previously reported the identification of three DREB1/ICBF homologs from sweet cherry (Prunus avium). To identify the function of these homologs, one of the genes, CIG-B, was transformed into Arabidopsis. In one of the transgenic plant lines, the DREB1/CBF target gene cor15a was induced in the absence of stress treatment. The cor15a-overexpressing transgenic plant exhibited mild growth retardation and had greater salt and freezing tolerance than did the wild-type and the transgenic lines in which cor15a was not induced. These results suggest that this sweet cherry DREB1/CBF homolog has a function similar to that of DREB1/CBF.

PMID:
15535126
DOI:
10.1016/j.jplph.2004.04.008
[Indexed for MEDLINE]
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