Involved in the oxidative degradation of abscisic acid, but not in the isomerization of the produced 8'-hydroxyabscisic acid (8'-OH-ABA) to (-)-phaseic acid (PA). 2-cis-(+)-abscisate + O2 + reduced [NADPH--hemoprotein reductase] = (+)-8'-hydroxyabscisate + H(+) + H2O + oxidized [NADPH--hemoprotein reductase] Plant hormone degradation; abscisic acid degradation. Mainly expressed in flowers. Lower expression in siliques, rosette leaves, roots and stems. Not expressed in dry seeds. Expressed in silique envelopes, but not in embryo or endosperm during the seed development. Not induced after imbibition. By abscisic acid, dehydration and rehydration. Belongs to the cytochrome P450 family.