Secondary metabolite biosynthesis
nounPronunciation: /ˌsɛkəndɛri ˌmɛtəˈbɑːlaɪt ˌbaɪoʊˈsɪnθəsɪs/
The anabolic synthesis of non-essential plant compounds including alkaloids, phenolics, terpenes, and glucosinolates triggered by abiotic stress as defensive or adaptive molecules. These metabolites accumulate in response to drought, temperature extremes, and UV stress to enhance stress tolerance and protect cellular structures.
Plain English
Plants produce specialized protective chemical compounds in response to environmental stress.
Etymology & History
Usage
"Secondary metabolite biosynthesis was upregulated in drought-stressed tomato plants, increasing flavonoid and phenolic concentrations."
Style guide notes: Distinguish from primary metabolism; specify metabolite classes when possible.
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Frequently Asked Questions
What are secondary metabolites and why do plants produce them under stress?
Secondary metabolites are non-essential compounds like phenolics and alkaloids that plants synthesize to defend against stress damage.
Which secondary metabolites increase during abiotic stress?
Phenolics, flavonoids, alkaloids, terpenoids, and glucosinolates commonly increase under drought, heat, and cold stress.
Why Test Candidates on This?
Secondary metabolite biosynthesis is commonly assessed in stress tolerance research and crop quality evaluation.
Required skill level: Mid