Negative regulator of fruit ripening involved in the oxidative degradation of abscisic acid (ABA). 2-cis-(+)-abscisate + O2 + reduced [NADPH--hemoprotein reductase] = (+)-8'-hydroxyabscisate + H(+) + H2O + oxidized [NADPH--hemoprotein reductase] Plant hormone degradation; abscisic acid degradation. Expressed at low levels in fruit. Fluctuant expression pattern with four peaks during development, and then it increased rapidly during ripening. First transiently repressed (1 day after treatment) and later induced (2 days after treatment) by abscisic acid (ABA) and dehydration. Silenced plants fruits have a rapid ripening with a quick colouring and associated with higher abscisic acid (ABA) levels. When disrupted in fruits, altered expression of ABA-responsive and ripening-related genes. Belongs to the cytochrome P450 family.