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Comparative analyses reveal potential uses of Brachypodium distachyon as a model for cold stress responses in temperate grasses.
- Source :
-
BMC plant biology [BMC Plant Biol] 2012 May 08; Vol. 12, pp. 65. Date of Electronic Publication: 2012 May 08. - Publication Year :
- 2012
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Abstract
- Background: Little is known about the potential of Brachypodium distachyon as a model for low temperature stress responses in Pooideae. The ice recrystallization inhibition protein (IRIP) genes, fructosyltransferase (FST) genes, and many C-repeat binding factor (CBF) genes are Pooideae specific and important in low temperature responses. Here we used comparative analyses to study conservation and evolution of these gene families in B. distachyon to better understand its potential as a model species for agriculturally important temperate grasses.<br />Results: Brachypodium distachyon contains cold responsive IRIP genes which have evolved through Brachypodium specific gene family expansions. A large cold responsive CBF3 subfamily was identified in B. distachyon, while CBF4 homologs are absent from the genome. No B. distachyon FST gene homologs encode typical core Pooideae FST-motifs and low temperature induced fructan accumulation was dramatically different in B. distachyon compared to core Pooideae species.<br />Conclusions: We conclude that B. distachyon can serve as an interesting model for specific molecular mechanisms involved in low temperature responses in core Pooideae species. However, the evolutionary history of key genes involved in low temperature responses has been different in Brachypodium and core Pooideae species. These differences limit the use of B. distachyon as a model for holistic studies relevant for agricultural core Pooideae species.
- Subjects :
- Adaptation, Physiological
Amino Acid Motifs
Amino Acid Sequence
Brachypodium physiology
Cold Temperature
Evolution, Molecular
Flowers genetics
Flowers physiology
Fructans genetics
Genes, Plant
Models, Biological
Oligonucleotide Array Sequence Analysis
Phylogeny
Plant Proteins genetics
Plant Proteins metabolism
Seasons
Sequence Alignment
Species Specificity
Transcriptome
Brachypodium genetics
Cold-Shock Response
Fructans metabolism
Multigene Family
Subjects
Details
- Language :
- English
- ISSN :
- 1471-2229
- Volume :
- 12
- Database :
- MEDLINE
- Journal :
- BMC plant biology
- Publication Type :
- Academic Journal
- Accession number :
- 22569006
- Full Text :
- https://doi.org/10.1186/1471-2229-12-65