Osmotic adjustment capacity
nounPronunciation: /ɒzˈmɒtɪk əˈdʒʌstmənt kəˈpæsɪti/
The physiological ability of plant cells to lower their osmotic potential through accumulation of solutes, maintaining turgor pressure under water stress conditions. This mechanism enables cells to continue water uptake from increasingly drier soil environments.
Plain English
A plant's ability to accumulate salts and sugars in cells to maintain water uptake during drought.
Etymology & History
Usage
"Species with high osmotic adjustment capacity demonstrated superior survival rates in semi-arid regions."
Style guide notes: Use 'osmotic adjustment capacity' rather than 'osmotic tolerance' in formal publications for precision.
Also known as
Contrasted with
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Frequently Asked Questions
How does osmotic adjustment help plants survive drought?
It lowers cell osmotic potential, allowing continued water absorption from dry soil environments.
What solutes accumulate during osmotic adjustment?
Sugars, amino acids, organic acids, and inorganic ions accumulate in plant cell vacuoles.
Why Test Candidates on This?
Essential for understanding plant drought survival mechanisms in stress physiology examinations.
Required skill level: Mid