Plant Secondary Metabolite Responses to Environmental Factors
Summary
Plants synthesise a vast array of secondary metabolites—such as phenolics, terpenoids and alkaloids—that are not essential for primary growth but play crucial roles in defence, adaptation and signalling. Their production is highly plastic and responds to environmental cues including light quality, temperature extremes, water availability, soil salinity and atmospheric composition. Such abiotic factors may act directly on metabolic pathways or via regulatory networks involving transcription factors, kinases and stress-responsive hormones. The resulting chemical adjustments can enhance UV protection through flavonoid accumulation, deter herbivores via increased alkaloid content, or stabilise membranes with volatile terpenoids under heat or drought. These dynamic responses underpin crop resilience, inform sustainable cultivation practices and drive the discovery of bioactive compounds for pharmaceuticals and nutraceuticals.
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Plant Secondary Metabolite Responses to Environmental Factors publication trend
The graph below shows the total number of articles in plant secondary metabolite responses to environmental factors across all publications each year (not limited to Nature Index journals).
Technical terms
Secondary metabolite: Organic compounds not directly involved in growth but vital for defence, signalling and ecological interactions.
Abiotic stress: Non-living environmental challenges such as drought, salinity, temperature extremes and ultraviolet radiation.
Elicitor: A physical or chemical factor that triggers or enhances the synthesis of secondary metabolites.
Phenolic compound: A class of metabolites characterised by one or more aromatic rings with hydroxyl groups, often with antioxidant activity.
Terpenoid: A diverse group of isoprene-derived compounds involved in defence, signalling and adaptation to abiotic cues.
Alkaloid: Nitrogen-containing secondary metabolites frequently associated with plant defence and pharmacological properties.
References
- Response of Plant Secondary Metabolites to Environmental Factors. Molecules (2018).
- Enhanced Production of Therapeutic Metabolites in Cork-Oak Somatic Embryos under Abiotic Stress Conditions. Stresses (2024).
- Plant Secondary Metabolites Produced in Response to Abiotic Stresses Has Potential Application in Pharmaceutical Product Development. Molecules (2022).
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