Journal
BIOLOGIA PLANTARUM
Volume 52, Issue 4, Pages 601-615Publisher
ACAD SCIENCES CZECH REPUBLIC, INST EXPERIMENTAL BOTANY
DOI: 10.1007/s10535-008-0120-6
Keywords
cold acclimation; Hordeum; Triticum
Categories
Funding
- GA CR [522/08/1290]
- MZe [0002700602]
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The review summarizes the level of current knowledge of impacts of vernalization and photoperiod on the induction and maintenance of frost tolerance (FrT) in wheat and barley. The phenomenon of vernalization is briefly described and the major vernalization (VRN) loci are characterised. Vernalization requirement and the three major growth habits of Triticeae (facultative, winter and spring) are defined on the basis of the two-locus VRN-2/VRN-1 epistatic model. Major photoperiodically regulated genes, which influence the transition to flowering, are characterised and their interactions with VRN genes are briefly discussed. The phenomenon of induction of FrT during the process of cold acclimation (CA) is described and the major cold-induced Cor/Lea genes are listed. Important regulatory mechanisms, i.e., CBF pathway, controlling the expression of Cor/Lea genes under cold, are discussed. The major loci affecting the development of FrT in Triticeae, the Fr loci, are characterised. In conclusion, current progress in this research field is summarized and new questions arising in the area are formulated.
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