Cold acclimation response
noun phrasePronunciation: /koʊld ˌækləˈmeɪʃən rɪˈspɑːns/
The physiological and molecular adjustments plants undergo during gradual exposure to low temperatures that enhance freezing tolerance. This multi-faceted response includes increased cell wall rigidity, altered membrane lipid composition, and accumulation of cryoprotective compounds.
Plain English
Plants gradually adapt to cold temperatures by making cellular changes that prevent freezing damage.
Etymology & History
Usage
"The cold acclimation response in Arabidopsis involves CBF transcription factor activation and downstream gene expression changes."
Style guide notes: Use 'cold-acclimated' when modifying nouns; distinguish acclimation (gradual) from acute cold exposure responses.
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Related Terms
Frequently Asked Questions
How long does cold acclimation typically require?
Cold acclimation usually requires days to weeks of gradual temperature decrease for maximum freezing tolerance development.
Which genes regulate the cold acclimation response?
CBF/DREB transcription factors activate COR genes that encode protective proteins, sugars, and lipid-modifying enzymes during acclimation.
Why Test Candidates on This?
Critical in cold-stress physiology and molecular plant biology assessment.
Required skill level: Mid