Turgor Pressure Loss
noun phrasePronunciation: /ˈtɜːɡər ˈprɛʃər lɔːs/
The reduction in hydrostatic pressure within plant cells that occurs when water availability decreases, leading to cell plasmolysis and wilting. This phenomenon directly compromises cellular rigidity, structural integrity, and the plant's ability to maintain upright growth.
Plain English
The decrease in water pressure inside plant cells that causes them to lose firmness and droop.
Etymology & History
Usage
"Turgor pressure loss in drought-stressed wheat leaves resulted in visible wilting within 48 hours of water withdrawal."
Style guide notes: Use 'turgor pressure loss' as a noun phrase; avoid abbreviating as TPL in formal contexts.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
What causes turgor pressure loss in plants?
Water deficit reduces the amount of water entering plant cells, decreasing internal hydrostatic pressure and cell firmness.
How does turgor pressure loss affect plant growth?
Loss of turgor prevents cell expansion, reduces photosynthetic capacity, and causes visible wilting symptoms in stressed plants.
Why Test Candidates on This?
Frequently assessed in plant physiology and abiotic stress tolerance examinations for understanding cellular responses to drought.
Required skill level: Junior