Turgor pressure regulation
nounPronunciation: /ˈtɜːɡər ˈprɛʃər ˌrɛɡjʊˈleɪʃən/
The physiological mechanism by which plants maintain or adjust cellular turgor pressure through osmolyte accumulation and compartmentalization to sustain cell rigidity during water stress. This process involves synthesis of compatible solutes and active ion transport to regulate cellular water potential.
Plain English
The plant's process of maintaining cell stiffness by adjusting the concentration of dissolved substances inside cells during water shortage.
Etymology & History
Usage
"Turgor pressure regulation through proline accumulation allows plant cells to maintain structural integrity under drought conditions."
Style guide notes: Use 'turgor-pressure regulation' when hyphenating before nouns; capitalize Turgor only at sentence start.
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Frequently Asked Questions
What are compatible solutes in turgor regulation?
Organic compounds like proline, betaine, and trehalose that accumulate in vacuoles to lower water potential without damaging cellular proteins.
How does turgor pressure relate to plant growth?
Adequate turgor pressure provides the mechanical force necessary for cell expansion and growth; its loss inhibits growth responses.
Why Test Candidates on This?
Fundamental concept in plant water relations and stress physiology, regularly featured in comprehensive plant science examinations.
Required skill level: Mid