Osmotic stress response
noun phrasePronunciation: /ɑːzˈmɒtɪk ˈstrɛs rɪˈspɒns/
The physiological adjustment mechanisms plants employ when exposed to conditions causing water potential gradients, such as drought or salinity. These responses involve cellular and biochemical modifications to maintain turgor pressure and metabolic function.
Plain English
How plants adapt their internal chemistry and structure when faced with conditions that remove water from their cells.
Etymology & History
Usage
"The osmotic stress response in drought-tolerant wheat varieties enables survival in arid environments."
Style guide notes: Use 'osmotic stress response' rather than 'osmotic adaptation' for precision in formal contexts.
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Contrasted with
Related Terms
Frequently Asked Questions
What triggers osmotic stress response in plants?
External conditions like drought, high salinity, or freezing that reduce water availability trigger osmotic stress responses.
How do plants manage osmotic stress?
Plants accumulate compatible solutes and adjust cell wall properties to maintain turgor and cellular function.
Why Test Candidates on This?
Frequently assessed in plant physiology and crop stress management examinations.
Required skill level: Mid