Molecular control of cold acclimation in trees
Identifieur interne : 002587 ( Main/Exploration ); précédent : 002586; suivant : 002588Molecular control of cold acclimation in trees
Auteurs : Annikki Welling [Finlande] ; E. Tapio Palva [Finlande]Source :
- Physiologia Plantarum [ 0031-9317 ] ; 2006-06.
Abstract
Frost tolerance is an acquired characteristic of plants that is induced in response to environmental cues preceding the onset of freezing temperatures and activation of a cold acclimation program. In addition to transient acclimation to low non‐freezing temperatures and enhancing survival to short frost episodes during the growth season, perennial woody plants need additionally to survive the cold winter months. Trees have evolved a complex dynamic process controlling the development of dormancy and freezing tolerance that secures accurate initiation and termination of the overwintering process. Although the phenology of overwintering has been known for decades, only recently has there been progress in elucidating the molecular mechanisms of dormancy and freezing tolerance development in perennial plants. Current molecular and genomic studies indicate that herbaceous annual and woody perennial plants share similar cold acclimation mechanisms. Both the signal processes controlling cold acclimation and the cold‐regulated target genes appear to be shared by herbaceous and woody plants. However, the dormancy development during overwintering brings new players in the molecular control of seasonal cold acclimation of woody perennials.
Url:
DOI: 10.1111/j.1399-3054.2006.00672.x
Affiliations:
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In addition to transient acclimation to low non‐freezing temperatures and enhancing survival to short frost episodes during the growth season, perennial woody plants need additionally to survive the cold winter months. Trees have evolved a complex dynamic process controlling the development of dormancy and freezing tolerance that secures accurate initiation and termination of the overwintering process. Although the phenology of overwintering has been known for decades, only recently has there been progress in elucidating the molecular mechanisms of dormancy and freezing tolerance development in perennial plants. Current molecular and genomic studies indicate that herbaceous annual and woody perennial plants share similar cold acclimation mechanisms. Both the signal processes controlling cold acclimation and the cold‐regulated target genes appear to be shared by herbaceous and woody plants. However, the dormancy development during overwintering brings new players in the molecular control of seasonal cold acclimation of woody perennials.</div></front></TEI><affiliations><list><country><li>Finlande</li></country><region><li>Uusimaa</li></region><settlement><li>Helsinki</li></settlement><orgName><li>Université d'Helsinki</li></orgName></list><tree><country name="Finlande"><region name="Uusimaa"><name sortKey="Welling, Annikki" sort="Welling, Annikki" uniqKey="Welling A" first="Annikki" last="Welling">Annikki Welling</name></region><name sortKey="Palva, E Tapio" sort="Palva, E Tapio" uniqKey="Palva E" first="E. Tapio" last="Palva">E. Tapio Palva</name><name sortKey="Welling, Annikki" sort="Welling, Annikki" uniqKey="Welling A" first="Annikki" last="Welling">Annikki Welling</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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