Membrane Lipid Peroxidation
nounPronunciation: /ˈmɛmbreɪn ˈlɪpɪd ˌpɛrɒksɪˈdeɪʃən/
The oxidative degradation of membrane lipids through free radical attack, resulting in loss of membrane integrity and increased ion leakage during abiotic stress. This process generates secondary toxic products like malondialdehyde (MDA) that further impair cellular function.
Plain English
Damage to cell membranes caused by harmful oxygen molecules attacking the fatty compounds that make up the membrane.
Etymology & History
Usage
"Membrane lipid peroxidation was assessed by measuring MDA content in cold-stressed leaf tissue."
Style guide notes: Write 'lipid peroxidation' without hyphen; use 'MDA' for malondialdehyde after first mention.
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Frequently Asked Questions
How is membrane lipid peroxidation measured in research?
Scientists measure malondialdehyde (MDA) content using thiobarbituric acid assay or high-performance liquid chromatography.
What cellular damage results from membrane lipid peroxidation?
Loss of membrane integrity, increased ion leakage, reduced cell viability, and secondary metabolic disruptions.
Why Test Candidates on This?
Lipid peroxidation assessment is a standard measurement in stress physiology research and examination.
Required skill level: Mid