Anthocyanin accumulation under stress
noun phrasePronunciation: /ˌænθoʊˈsaɪənɪn əˌkjuːmjəˈleɪʃən əndər ˈstrɛs/
The increased biosynthesis and accumulation of anthocyanin pigments in plant tissues as a protective response to abiotic stressors such as high light, cold, or drought. These water-soluble flavonoids function as antioxidants and UV filters while signaling stress status.
Plain English
Plants producing more red, purple, or blue pigments in response to environmental stresses like cold, bright light, or drought.
Etymology & History
Usage
"Anthocyanin accumulation under stress was observable as reddening of leaf margins in cold-exposed apple seedlings."
Style guide notes: Specify the stress type and plant tissue when mentioning anthocyanin accumulation for clarity and experimental context.
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Frequently Asked Questions
What role do anthocyanins play during plant stress?
They neutralize harmful reactive oxygen species and filter damaging ultraviolet radiation while indicating stress status visually.
Can anthocyanin levels indicate plant stress severity?
Yes; greater anthocyanin accumulation often correlates with increased stress intensity, serving as a visible stress biomarker.
Why Test Candidates on This?
Relevant to advanced studies on stress biomarkers and secondary metabolism regulation but less common in routine screening.
Required skill level: Senior