| abstract |
The present invention provides a method for improving the synthesis of flavonoids by plants, a method for producing flavonoids efficiently produced by this method, a pharmaceutical composition or food and drink containing the flavonoids produced by this production method, and the like. . A plant is irradiated with light having a photon flux density of a wavelength component in a wavelength region of 435 nm to 780 nm in a range of 50 μmol m-2s-1 to 300 μmol m-2s-1, and a chalcone synthase gene, flavanone A method for improving the synthesis of flavonoids by plants by promoting the expression of one or more genes of 3-hydroxylase gene, dihydroflavanol 4-reductase gene or UDP-glucosyltransferase family gene. [Selection figure] None |