Turgor pressure
nounPronunciation: /ˈtɜːɡər ˈprɛʃər/
The hydrostatic pressure exerted by cell contents against the cell wall, maintaining cell rigidity and structural integrity. This pressure is essential for cell expansion, nutrient transport, and plant mechanical support under water availability.
Plain English
The pressure inside plant cells that keeps them firm and helps the plant stand upright.
Etymology & History
Usage
"Under water-limiting conditions, turgor pressure decreases, causing wilting and reduced photosynthetic capacity."
Style guide notes: Use 'turgor pressure' as two words; avoid abbreviating as TP in formal scientific writing.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
What happens to plants when turgor pressure decreases?
Plants wilt, lose structural rigidity, and experience reduced photosynthesis and growth rates.
How does turgor pressure relate to water stress?
Low water availability reduces turgor pressure, impairing cell expansion and overall plant performance.
Why Test Candidates on This?
Critical for understanding plant water relations and physiological responses to water stress.
Required skill level: Junior