Thermal acclimation
nounPronunciation: /ˈθɜːməl ˌækləˈmeɪʃən/
The adaptive physiological and biochemical adjustments plants make to tolerate prolonged exposure to non-lethal temperature extremes. This process involves modifying membrane composition, enzyme expression, and metabolic pathways over hours to days.
Plain English
Plants gradually adjust their internal chemistry and structure to survive extended periods of unusually hot or cold temperatures.
Etymology & History
Usage
"Thermal acclimation in temperate perennials involves upregulation of protective proteins before winter dormancy."
Style guide notes: Distinguish thermal acclimation from immediate stress responses; acclimation requires time and involves lasting physiological changes.
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Contrasted with
Related Terms
Frequently Asked Questions
How long does thermal acclimation take?
Thermal acclimation typically requires hours to days of exposure to new temperature conditions, with some processes taking weeks to fully establish.
What mechanisms enable thermal acclimation?
Plants modify lipid membrane composition, increase protective protein synthesis, and alter carbohydrate metabolism during thermal acclimation processes.
Why Test Candidates on This?
Relevant for understanding seasonal plant adaptation and climate-change impacts on crop physiology.
Required skill level: Senior