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The up-regulation of elongation factors in the barley leaf and the down-regulation of nucleosome assembly genes in the crown are both associated with the expression of frost tolerance
A. Janská, A. Aprile, L. Cattivelli, J. Zámečník, L. de Bellis, J. Ovesná,
Language English Country Germany
Document type Journal Article, Research Support, Non-U.S. Gov't
NLK
ProQuest Central
from 2002-04-01 to 1 year ago
Medline Complete (EBSCOhost)
from 2003-07-01 to 1 year ago
Health & Medicine (ProQuest)
from 2002-04-01 to 1 year ago
Public Health Database (ProQuest)
from 2002-04-01 to 1 year ago
- MeSH
- Down-Regulation MeSH
- Hordeum genetics metabolism MeSH
- Plant Leaves genetics metabolism MeSH
- Chromosome Mapping MeSH
- Nucleosomes genetics metabolism MeSH
- Cold-Shock Response MeSH
- Gene Expression Regulation, Plant MeSH
- Genes, Plant MeSH
- Plant Proteins genetics metabolism MeSH
- Transcriptional Elongation Factors genetics metabolism MeSH
- Transcriptome MeSH
- Up-Regulation MeSH
- Freezing MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
We report a series of microarray-based leaf and crown transcriptome comparisons involving three barley cultivars (cvs. Luxor, Igri and Atlas 68) which express differing degrees of frost tolerance. The transcripts were obtained following the exposure of seedlings to low (above and below zero) temperatures, aiming to identify those genes and signalling/metabolic pathways which are associated with frost tolerance. Both the leaves and the crowns responded to low temperature by the up-regulation of a suite of abscisic acid (ABA)-responsive genes, most of which have already been recognized as components of the plant low temperature response. The inter-cultivar comparison indicated that genes involved in maintaining the leaf's capacity to synthesize protein and to retain chloroplast activity were important for the expression of frost tolerance. In the crown, the repression of genes associated with nucleosome assembly and transposon regulation were the most relevant transcriptional changes associated with frost tolerance, highlighting the role of gene repression in the cold acclimation response.
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