Cellular dehydration tolerance
nounPronunciation: /səˈlʊlər ˌdiːhaɪˈdreɪʃən ˈtɒlərəns/
The physiological capacity of cells to withstand significant loss of water content and maintain critical cellular functions, structural integrity, and viability despite reduced hydration. This trait is essential for surviving prolonged desiccation stress in plants.
Plain English
The ability of plant cells to survive and function when they lose most of their water content.
Etymology & History
Usage
"Desert plant species exhibit remarkable cellular dehydration tolerance, surviving water loss exceeding 90 percent of their fresh weight."
Style guide notes: Distinguish cellular dehydration tolerance from plant-level drought tolerance; this term specifically addresses cellular mechanisms.
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Frequently Asked Questions
How do plant cells survive extreme water loss?
Cells accumulate protective compounds like sugars and proteins that stabilize membranes, maintain enzyme activity, and prevent protein aggregation during desiccation.
Which plants show high cellular dehydration tolerance?
Resurrection plants, many desert species, and desiccation-tolerant mosses exhibit exceptional cellular dehydration tolerance mechanisms.
Why Test Candidates on This?
Relevant for advanced plant stress physiology and molecular adaptation research.
Required skill level: Expert