Aquaporin upregulation
nounPronunciation: /ˌækwəˈpɔːrɪn ˈʌprɛɡjəˈleɪʃən/
The increased expression and abundance of aquaporin water channel proteins in cell membranes during abiotic stress, facilitating rapid water transport across membranes. This adjustment improves water use efficiency under drought or salinity by optimizing intracellular water distribution and turgor maintenance.
Plain English
Plants increase water-channel proteins in cell membranes to move water more efficiently during stress.
Etymology & History
Usage
"Aquaporin upregulation in wheat roots improved water uptake efficiency under water-limited conditions."
Style guide notes: Specify aquaporin subfamily when relevant; capitalize as protein name.
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Frequently Asked Questions
What are aquaporins and their function in plants?
Aquaporins are membrane proteins forming water channels that facilitate rapid, regulated water movement across cell membranes.
How does aquaporin upregulation benefit stressed plants?
Increased aquaporins improve water uptake, maintain cell hydration, and support efficient water redistribution during stress.
Why Test Candidates on This?
Aquaporin regulation is relevant for advanced research on cellular water balance and crop drought tolerance mechanisms.
Required skill level: Expert