Lipid peroxidation extent
nounPronunciation: /ˈlɪpɪd pɛrˌɑksiˈdeɪʃən ɪkˈstɛnt/
The degree of oxidative damage to cellular membrane lipids measured by malondialdehyde (MDA) accumulation or lipid hydroperoxide levels during abiotic stress. This indicator reflects the severity of oxidative stress and membrane integrity deterioration in plant tissues.
Plain English
The amount of damage to cell membrane fats caused by harmful oxidative molecules during plant stress.
Etymology & History
Usage
"Lipid peroxidation extent in soybean leaves decreased significantly following application of antioxidant-rich biostimulants."
Style guide notes: Report lipid peroxidation as nmol MDA/mg fresh weight; always specify plant tissue type and sampling time.
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Related Terms
Frequently Asked Questions
Why is MDA measured to assess lipid peroxidation?
MDA is a stable breakdown product of polyunsaturated fatty acids that correlates directly with membrane damage severity.
What stresses cause highest lipid peroxidation in plants?
Combined drought and heat stress typically causes the greatest lipid peroxidation compared to single-stress conditions.
Why Test Candidates on This?
Frequently assessed in plant biochemistry and stress tolerance research as a marker of oxidative damage.
Required skill level: Mid