AP2 — Daucus carota subsp. sativus

Summary

DCAR_002494 (DcAP2) on carrot chromosome 1 encodes a protein containing an AP2/ERF domain, with DNA-binding, transcription coactivator and corepressor binding activities, and blue light photoreceptor activity. It is associated with regulation of floral organ abscission, seed development and abscission, endosperm development, seed coat development, cell wall thickening, starch biosynthesis, and plant epidermal cell fate specification. The gene has been linked to traits including seed color, seed set, branch angle, photoperiod-sensitive flowering time, plant male sterility, shoot system elongation, whole plant size, and responses to aphids, thrips, insects, jasmonic acid, gibberellic acid, cytokinin, ABA, osmotic stress, and potassium. It localizes to the nucleus, cytosol, nucleolus, Cajal body, SCF complex, and transcription regulator complex. Related genes in other species connect the family to floral organ identity, trichome development, seed mucilage, and defense responses.