cold acclimation
nounPronunciation: /koʊld əˈklaɪməˌteɪʃən/
Also written as: CA
The gradual physiological and biochemical changes that enable plants to survive freezing temperatures through controlled cold exposure.
Full Definition
Cold acclimation is a complex developmental process whereby plants increase their freezing tolerance through exposure to non-freezing low temperatures over time. This process involves extensive changes in gene expression, membrane composition, carbohydrate metabolism, and protein synthesis that collectively enhance cellular protection against ice formation and cold-induced damage. The acclimation process typically requires several days to weeks and is reversible when temperatures warm. Understanding cold acclimation mechanisms is crucial for developing winter-hardy crops and predicting plant responses to climate variability.
Plain English
How plants gradually toughen up to survive freezing weather by slowly adjusting their internal chemistry when exposed to cold temperatures.
In Editorial Context
A central concept in cold stress research manuscripts that editors must evaluate for methodological rigor in temperature treatments and acclimation protocols.
Etymology & History
Developed from early observations of seasonal frost tolerance changes in temperate region agriculture and forestry.
Initially focused on frost survival, now encompasses molecular mechanisms and climate adaptation strategies.
Usage
"The review article comprehensively covers cold acclimation pathways in cereals, making it suitable for our special issue on winter stress tolerance."
Usage note: Distinguish from cold adaptation (evolutionary) and cold shock (immediate response to sudden temperature drop).
Context: winter hardiness research, climate change studies, molecular biology of cold response
Region: international
Also known as
Contrasted with
Don't confuse with
Often confused with vernalization, but acclimation focuses on survival while vernalization affects flowering.