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GrainGenes Reference Report: PPS-129-1781

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Reference	PPS-129-1781
Title	Barley Cbf3 gene identification, expression pattern, and map location
Journal	Plant Physiology
Year	2002
Volume	129
Pages	1781-1787
Author	Choi DW Rodriguez EM Close TJ
Abstract	Summary: Although cold and drought adaptation in cereals and other plants involve the induction of a large number of genes, inheritance studies in Triticeae (wheat [Triticum aestivum], barley [Hordeum vulgare], and rye [Secale cereale]) have revealed only a few major loci for frost or drought tolerance that are consistent across multiple genetic backgrounds and environments. One might imagine that these loci could encode highly conserved regulatory factors that have global effects on gene expression; therefore, genes encoding central regulators identified in other plants might be orthologs of these Triticeae stress tolerance genes. The CBF/DREB1 regulators, identified originally in Arabidopsis as key components of cold and drought regulation, merit this consideration. We constructed barley cDNA libraries, screened these libraries and a barley bacterial artificial chromosome library using rice (Oryza sativa) and barley Cbf probes, found orthologs of Arabidopsis CBF/DREB1 genes, and examined the expression and genetic map location of the barley Cbf3 gene, HvCbf3. HvCbf3 was induced by a chilling treatment. HvCbf3 is located on barley chromosome 5H between markers WG364b and saflp58 on the barley cv Dicktoo x barley cv Morex genetic linkage map. This position is some 40 to 50 cM proximal to the winter hardiness quantitative trait locus that includes the Vrn-1H gene, but may coincide with the wheat 5A Rcg1 locus, which governs the threshold temperature at which cor genes are induced. From this, it remains possible that HvCbf3 is the basis of a minor quantitative trait locus in some genetic backgrounds, though that possibility remains to be thoroughly explored
External Databases	Pubmed: 12177491
Keyword	[ Hide all but 1 of 64 ] 5a adaptation arabidopsis artificial chromosome artificial chromosome library bacterial bacterial artificial chromosome barley brassica napus cdna cdna libraries cdna library chilling chromosome cis-acting element cold cold acclimation component dehydrin multigene family drought drought tolerance encode freezing tolerance gene genetic background genetic linkage genetic linkage map genetic map hardiness hordeum vulgare induction inheritance linkage linkage map low temperature map map location multiple oryza oryza sativa pattern position probe probes quantitative trait quantitative trait locus regulation regulatory rice rye signal transduction stress stress tolerance stresses temperature threshold tolerance tolerance genes trait transcriptional activators triticeae water-deficit winter winter-hardiness

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