Phenotypes of gif mutants. A, Wild-type Columbia (Col) and gif plants (top) and rosette leaves (bottom) from the first to fourth leaves at day 20. B, Seedlings at day 8. C, Mature flowers. Note that gif1/2/3 has only two petals and split carpels (arrowheads). D, Adaxial palisade cells of mature leaves. E, Adaxial palisade cells of mature cotyledons. F, Subepidermal cells at the abaxial side of mature petals. Scale bars = 25 μm.