Membrane lipid composition remodeling
noun phrasePronunciation: /ˈmembreɪn ˈlɪpɪd ˌkɒmpəˈzɪʃən ˌriːˈmɒdəlɪŋ/
The dynamic alteration of phospholipid and fatty acid composition in cell and organellar membranes in response to abiotic stress conditions. This remodeling maintains membrane fluidity, integrity, and selective permeability under temperature and osmotic stress.
Plain English
Plants change the types of fats in their cell membranes to keep them flexible and protect against temperature and drought stress.
Etymology & History
Usage
"Cold stress-induced membrane lipid composition remodeling increased unsaturated fatty acid content, preventing crystallization in winter wheat."
Style guide notes: Use full phrase; avoid shortening to simply 'lipid remodeling' without membrane context in formal contexts.
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Frequently Asked Questions
Why do plants remodel membrane lipids under cold stress?
Increased unsaturated fatty acids prevent membrane hardening and maintain essential protein function at low temperatures.
How does salt stress affect membrane lipid composition?
Salt stress increases polyunsaturated fatty acids and phosphatidylglycerol to maintain membrane integrity under osmotic stress.
Why Test Candidates on This?
Advanced topic relevant for specialized stress physiology and molecular biology research assessments.
Required skill level: Expert