Regulatory gene candidates and gene expression analysis of cold acclimation in winter and spring wheat

Freezing tolerance in plants develops through acclimation to cold by growth at low, above-freezing temperatures. Wheat is one of the most freezing-tolerant plants among major crop species and the wide range of freezing tolerance among wheat cultivars makes it an excellent model for investigation of...

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Published in:	Plant molecular biology Vol. 64; no. 4; pp. 409 - 423
Main Authors:	Monroy, Antonio F, Dryanova, Ani, Malette, Brigitte, Oren, Daniel H, Ridha Farajalla, Mohammed, Liu, Wucheng, Danyluk, Jean, Ubayasena, Lasantha W. C, Kane, Khalil, Scoles, Graham J, Sarhan, Fathey, Gulick, Patrick J
Format:	Journal Article
Language:	English
Published:	Netherlands Dordrecht : Kluwer Academic Publishers 01-07-2007 Springer Nature B.V
Subjects:	Acclimation Acclimatization Acclimatization - genetics Arabidopsis - genetics Calcium Calcium-Binding Proteins - genetics Calcium-Binding Proteins - physiology Chromosome Mapping Cold Cold acclimation Cold Temperature Cold tolerance Cultivars DNA microarrays Freezing Gene expression Gene expression profile Gene Expression Profiling Gene Expression Regulation, Plant Genome, Plant Guanosine triphosphate Kinases Oligonucleotide Array Sequence Analysis Plant Proteins - genetics Plant Proteins - physiology Protein kinase Protein Kinases - genetics Protein Kinases - physiology regulator genes Ribonucleic acid RNA RNA, Messenger - metabolism Seasons Signal transduction Spring wheat Transcription factors Transcription Factors - genetics Transcription Factors - physiology Triticum - genetics Triticum - physiology Triticum aestivum Ubiquitin Wheat Winter wheat
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Summary:	Freezing tolerance in plants develops through acclimation to cold by growth at low, above-freezing temperatures. Wheat is one of the most freezing-tolerant plants among major crop species and the wide range of freezing tolerance among wheat cultivars makes it an excellent model for investigation of the genetic basis of cold tolerance. Large numbers of genes are known to have altered levels of expression during the period of cold acclimation and there is keen interest in deciphering the signaling and regulatory pathways that control the changes in gene expression associated with acquired freezing tolerance. A 5740 feature cDNA amplicon microarray that was enriched for signal transduction and regulatory genes was constructed to compare changes in gene expression in a highly cold-tolerant winter wheat cultivar CDC Clair and a less tolerant spring cultivar, Quantum. Changes in gene expression over a time course of 14 days detected over 450 genes that were regulated by cold treatment and were differentially regulated between spring and winter cultivars, of these 130 are signaling or regulatory gene candidates, including: transcription factors, protein kinases, ubiquitin ligases and GTP, RNA and calcium binding proteins. Dynamic changes in transcript levels were seen at all periods of cold acclimation in both cultivars. There was an initial burst of gene activity detectable during the first day of CA, during which 90% of all genes with increases in transcript levels became clearly detectable and early expression differential between the two cultivars became more disparate with each successive period of cold acclimation.
Bibliography:	http://dx.doi.org/10.1007/s11103-007-9161-z ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1
ISSN:	0167-4412 1573-5028
DOI:	10.1007/s11103-007-9161-z