Lipid peroxidation damage
nounPronunciation: /ˈlɪpɪd pɛrˌɒksɪˈdeɪʃən ˈdæmɪdʒ/
The degradation of membrane lipids initiated by reactive oxygen species under oxidative stress, resulting in accumulation of malondialdehyde (MDA) and lipid hydroperoxides that disrupt cellular membranes. This process compromises membrane integrity, protein function, and cellular compartmentalization.
Plain English
The destruction of protective fats in cell membranes by free radicals during stress, causing cellular leakage.
Etymology & History
Usage
"MDA accumulation indicative of lipid peroxidation damage was significantly lower in stress-tolerant genotypes compared to susceptible lines."
Style guide notes: Always specify 'lipid peroxidation' rather than 'peroxidation' alone for clarity in multi-stress contexts.
Also known as
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Related Terms
Frequently Asked Questions
How is lipid peroxidation damage measured in stress research?
Malondialdehyde (MDA) content quantified via thiobarbituric acid assay serves as the primary biomarker for lipid damage.
What are consequences of severe lipid peroxidation in plants?
Membrane collapse, ion leakage, organelle dysfunction, and ultimately cell death due to loss of compartmentalization.
Why Test Candidates on This?
Fundamental marker in abiotic stress diagnostics, physiological tolerance screening, and antioxidant defense evaluation studies.
Required skill level: Mid