Dynamic metabolic changes in seeds and seedlings of Brassica napus (oilseed rape) suppressing UGT84A9 reveal plasticity and molecular regulation of the phenylpropanoid pathway

Suppression of UGT84A9 in seeds of Brassica napus blocks the major sink pathway of sinapic acid via 1-O-sinapoylglucose (SinGlc) and affects the accumulation pattern of hydroxycinnamic acid, hydroxybenzoic acid and flavonoid conjugates in seeds and seedlings. The UV-B stress response is not impaired.