Environmental regulation and physiological basis of freezing tolerance in woody plants |
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Authors: | Email author" target="_blank">Chunyang?LiEmail author Olavi?Junttila E?Tapio?Palva |
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Institution: | 1.Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu,P.R. China;2.Department of Biosciences, Division of Genetics, and Institute of Biotechnology, Viikki Biocenter,University of Helsinki,Finland;3.Department of Biology,University of Troms?,Troms?,Norway;4.Department of Applied Biology,University of Helsinki,Finland |
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Abstract: | Cold acclimation of plants is a complex process involving a number of biochemical and physiological changes. The ability to
cold acclimate is under genetic control. The development of freezing tolerance in woody plants is generally triggered by non-freezing
low temperatures but can also be induced by mild drought or exogenous abscisic acid, as well as by short photoperiod. In nature,
the extreme freezing tolerance of woody plants is achieved during sequential stages of cold acclimation the first of which
is initiated by short photoperiods and non-freezing low temperatures, and the second by freezing temperatures. Although recent
breakthroughs have increased our knowledge on the physiological molecular basis of freezing tolerance in herbaceous species,
which acclimate primarily in response to non-freezing low temperatures, very little is known about cold acclimation of woody
plants. This article attempts to review our current understanding of the physiological aspects that underline cold acclimation
in woody plants. |
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Keywords: | cold acclimation freezing tolerance woody plants |
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