Induction of phenylpropanoid compounds by UV-B irradiation in roots of seedlings and cell cultures from dill (Anethum graveolens L.).

In both cell cultures and seedling roots from dill (Anethum graveolens L.) UV irradiation selectively induced a quercetin arabinoside and two other phenylpropanoid compounds with caffeic acid as the aglycone. Only wavelengths below 360 nm were effective in this induction. Maximal effectiveness was observed below 320 nm.