Cellular Turgor Maintenance
nounPronunciation: /ˈsɛljələr ˈtɜːɡər meɪnˈtenəns/
The preservation of hydrostatic pressure within plant cells through solute accumulation and cell wall elasticity during water-limiting conditions. This mechanism sustains cell expansion, photosynthesis, and metabolic functions despite reduced water availability.
Plain English
The plant cell's ability to maintain internal water pressure and firmness by accumulating dissolved substances when water is scarce.
Etymology & History
Usage
"Cellular turgor maintenance through mannitol accumulation enabled continued growth in osmotically stressed barley seedlings."
Style guide notes: Use 'turgor pressure' and 'turgor maintenance' interchangeably in most contexts; clarify measurement units when quantifying.
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Frequently Asked Questions
What solutes accumulate for turgor maintenance?
Proline, sugars, potassium ions, and polyols like mannitol and sorbitol are common osmolytes.
Why is turgor important for plants?
Turgor pressure drives cell expansion, maintains leaf rigidity, and supports metabolic processes.
Why Test Candidates on This?
Important in plant physiology and drought stress biology laboratory and examination assessments.
Required skill level: Mid