Summary
This paper by Caldwell and colleagues, published in Photochemistry and Photobiology in 2007, reviews or reports evidence that UV-B radiation acts as an environmental signal promoting the accumulation of phenolic compounds — including flavonoids — in plant tissues. Such compounds function as UV-screening pigments and antioxidants. The work likely synthesises mechanistic and applied evidence relevant to understanding how light environment influences plant secondary metabolite profiles.
UK applicability
Findings are broadly applicable to UK horticulture and protected cropping, where UV-B manipulation via greenhouse glazing or supplemental lighting could be used to enhance phenolic content and potential nutritional quality of crops such as lettuce, herbs and soft fruit.
Key measures
Phenolic compound concentration (mg/g or µmol/g); UV-B radiation levels (kJ/m²); flavonoid and hydroxycinnamic acid derivatives
Outcomes reported
The study examined the role of UV-B radiation in stimulating the biosynthesis and accumulation of phenolic compounds in plants. It likely reported changes in phenolic concentrations in response to varying UV-B exposure levels.
Topic tags
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