Desiccation tolerance
nounPronunciation: /ˌdesɪˈkeɪʃən ˈtɒlərəns/
The ability of an organism to survive extreme water loss and remain viable upon rehydration. This trait is particularly common in seeds, spores, and certain resurrection plants that can lose up to 95% of their water content.
Plain English
The capacity to survive and recover from severe dehydration without permanent damage.
Etymology & History
Usage
"Tardigrades exhibit remarkable desiccation tolerance, enabling survival in extreme environments for decades."
Style guide notes: Capitalize when referring to specific research protocols; use lowercase in general descriptions.
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Frequently Asked Questions
Which organisms naturally possess desiccation tolerance?
Seeds, spores, tardigrades, rotifers, and resurrection plants are primary examples exhibiting this trait.
How do organisms survive desiccation at cellular level?
Accumulation of protective compounds like trehalose and proteins preserve cellular structures during water loss.
Why Test Candidates on This?
Essential for understanding plant survival strategies and extremophile adaptation mechanisms in abiotic stress contexts.
Required skill level: Mid