Osmoregulation
nounPronunciation: /ˌɒzmoʊˈreɡjəleɪʃən/
The physiological process by which plants maintain cellular osmotic potential through accumulation or mobilization of solutes in response to water stress conditions. This mechanism enables cells to maintain turgor pressure and sustain metabolic functions under drought or salinity stress.
Plain English
Plants control the concentration of dissolved substances in their cells to manage water balance during drought or salt stress.
Etymology & History
Usage
"Enhanced osmoregulation through compatible solute accumulation is a critical survival strategy for halophytic plants in saline environments."
Style guide notes: Use 'osmoregulation' for the overall process and 'osmotic adjustment' for the specific cellular response mechanism.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
How does osmoregulation help plants survive drought?
By accumulating solutes, plants maintain cell turgor pressure and water uptake even when soil water availability decreases significantly.
What role do proline and sugars play in osmoregulation?
These compatible solutes accumulate in cells to lower osmotic potential without damaging proteins, enabling continued water absorption.
Why Test Candidates on This?
Commonly assessed in plant physiology and crop stress tolerance evaluations through solute quantification assays.
Required skill level: Mid