Anthocyanin accumulation
nounPronunciation: /ænˈθoʊsɪənɪn əˌkjuːmjəˈleɪʃən/
The increased synthesis and deposition of anthocyanin pigments in plant tissues as a protective response to abiotic stress, particularly UV radiation and nutrient deficiency. These water-soluble flavonoid compounds function as antioxidants and photoprotective agents, mitigating cellular damage.
Plain English
Plants produce red, purple, or blue pigments as a defense mechanism against harsh environmental conditions and light stress.
Etymology & History
Usage
"Anthocyanin accumulation in apple leaves increased significantly under high light and cold stress conditions."
Style guide notes: Specify anthocyanin types (cyanidin, delphinidin) when discussing specific stress responses.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
What triggers anthocyanin accumulation in plants?
UV radiation, cold temperatures, nutrient deficiency, drought, and high light intensity all trigger increased anthocyanin synthesis.
How do anthocyanins protect plants from stress?
Anthocyanins absorb excess light energy, scavenge free radicals, and reduce photoinhibition damage to photosynthetic machinery.
Why Test Candidates on This?
Anthocyanin accumulation serves as a visible stress indicator and biomarker in abiotic stress research.
Required skill level: Expert