Acts as negative regulator of abscisic acid (ABA) signaling during germination and early seedling development. Involved in the regulation of vegetative development and fertility. Modulates red light signaling in seedling photomorphogenesis. Expressed in the chalaze of seeds, hypocotyls, cotyledons, roots, emerging lateral roots, leaves, sepals and stamens. These data suggest that ZFP3 is expressed in most organs, showing high expression in vascular tissues. Down-regulated by abscisic acid (ABA). No visible phenotype under normal growth conditions, but mutant seeds are hypersensitivite to inhibition of germination by abscisic acid (ABA). Seeds over-expressing ZFP3 are insensitive to inhibition of germination by abscisic acid (ABA). Plants over-expressing ZFP3 are dwarf, have reduced number and size of siliques, which contains few seeds or are empty.