Turgor pressure collapse
noun phrasePronunciation: /ˈtɜːɡər ˈpreʃər kəˈlæps/
The loss of cell rigidity due to water depletion from vacuoles, causing wilting and reduced structural integrity in plant tissues. This phenomenon occurs when water potential gradients become insufficient to maintain cell wall tension.
Plain English
The loss of water pressure inside plant cells that causes them to become limp and lose their firmness.
Etymology & History
Usage
"Under severe drought conditions, turgor pressure collapse leads to irreversible wilting in sensitive crop species."
Style guide notes: Use 'turgor pressure collapse' as the complete phrase in formal contexts; abbreviation 'TPC' acceptable in methodology sections.
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Frequently Asked Questions
What causes turgor pressure collapse in plants?
Water depletion from vacuoles reduces cell pressure, causing structural loss and wilting symptoms.
Is turgor pressure collapse reversible?
Early-stage collapse is reversible with rehydration, but prolonged stress causes permanent tissue damage.
Why Test Candidates on This?
Commonly tested in plant physiology and stress response assessments for understanding drought tolerance mechanisms.
Required skill level: Mid