Regulation of Phenolic Compound Production by Light Varying in Spectral Quality and Total Irradiance.

ABSTRACT: Photosynthetically active radiation (PAR) is an important environmental cue inducing the production of many secondary metabolites involved in plant oxidative stress avoidance and tolerance. To examine the complex role of PAR irradiance and specific spectral components on the accumulation of phenolic compounds (PheCs), we acclimated spring barley (Hordeum vulgare) to different spectral qualities (white, blue, green, red) at three irradiances (100, 200, 400 µmol m^-2 s^-1). We confirmed that blue light irradiance is essential for the accumulation of PheCs in secondary barley leaves (in UV-lacking conditions), which underpins the importance of photoreceptor signals (especially cryptochrome). Increasing blue light irradiance most effectively induced the accumulation

SUBMITTER: Pech R 

PROVIDER: S-EPMC9223736 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature