Secondary metabolite accumulation
nounPronunciation: /ˌsɛkənˈdɛri ˌmɛtəˈbɒlaɪt əˈkjuːmjʊˈleɪʃən/
The increased biosynthesis and accumulation of non-essential organic compounds (such as phenolics, alkaloids, and terpenoids) in response to abiotic stress conditions. These compounds function as protective agents against oxidative damage and stress-induced cellular dysfunction.
Plain English
Plants making more protective chemical compounds when stressed, such as flavonoids and other defensive molecules.
Etymology & History
Usage
"Secondary metabolite accumulation in drought-stressed plants includes increased anthocyanin and flavonoid production."
Style guide notes: Specify metabolite classes (phenolics, alkaloids) rather than generic 'secondary compounds' for clarity.
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Related Terms
Frequently Asked Questions
Why do plants accumulate secondary metabolites during stress?
To protect cells from oxidative damage, stabilize proteins, and improve osmotic adjustment under abiotic stress conditions.
What are common stress-induced secondary metabolites?
Flavonoids, anthocyanins, phenolic acids, alkaloids, and terpenoids serve multiple protective roles depending on stress type.
Why Test Candidates on This?
Frequently tested in plant biochemistry and stress physiology examinations.
Required skill level: Mid