Specifically catalyzes 23-O-glucosylation of brassinosteroids, resulting probably in their inactivation. Also, involved in the O-glucosylation of trans-zeatin and dihydrozeatin. Active in vitro on cis-zeatin, dihydrozeatin-9-N-Glc, and olomoucine. Also involved in the detoxification of the Fusarium mycotoxin deoxynivalenol by the transfer of glucose from UDP-glucose to the hydroxyl group at C-3. Possesses low quercetin 7-O-glucosyltransferase and 4'-O-glucosyltransferase activities in vitro. Elongating hypocotyls and root-specific. Expressed in the vascular system, in meristematic tissues of the root tip, and in the vasculature of the hypocotyl right after germination. In late stage of flower development, expressed in petals, and in abscission zones. Rapidly induced in response to deoxynivalenol exposure. Weak induction by salicylic acid, jasmonic acid and 1-aminocyclopropylcarbonic acid (ACC) treatments. Not induced by cytokinin treatment. Belongs to the UDP-glycosyltransferase family.