Aquaporin regulation under stress
noun phrasePronunciation: /ˌækwəˈpɔrɪn ˌrɛɡjəˈleɪʃən ˈʌndər stres/
The dynamic modulation of aquaporin water channel protein abundance, localization, and activity in plant cell membranes during abiotic stress conditions to regulate water transport efficiency. Stress-induced changes in aquaporin expression affect cellular water balance and turgor maintenance.
Plain English
Changes in water channel proteins that help plants manage water movement during environmental stress.
Etymology & History
Usage
"Aquaporin regulation under drought stress reduces root water loss while maintaining essential water uptake in the shoot."
Style guide notes: Use full name 'aquaporin' in first mention; PIP (plasma membrane intrinsic protein) abbreviation acceptable for subsequent references.
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Contrasted with
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Frequently Asked Questions
How does aquaporin regulation help plants survive drought?
Downregulation of aquaporins in leaves reduces transpirational water loss while maintaining root hydraulic conductivity for water uptake.
What triggers aquaporin expression changes during stress?
Abscisic acid, osmotic stress, and calcium signaling induce phosphorylation and relocalization of aquaporin proteins.
Why Test Candidates on This?
Advanced topic relevant for understanding water-stress tolerance mechanisms and developing drought-resilient crop varieties through molecular breeding.
Required skill level: Expert