ARF6 — Arabidopsis thaliana

Summary

AT1G30330, designated ARF6 in Arabidopsis thaliana, encodes an auxin response factor containing B3 DNA-binding, ARF, and AUX/IAA domains, and has DNA-binding transcription factor activity and transcription cis-regulatory region binding activity. ARF6 is associated with nectary development, epidermal cell differentiation, filament development, secondary growth, dehiscence, and regulation of auxin biosynthetic processes. The gene has been linked to numerous traits including seed volume and shape, fruit set and quality, leaf area and width, pedicel and peduncle length, tiller angle, drought sensitivity, adventitious root number, root branching, nitrate transport, brassinosteroid content, gibberellin biosynthesis, and heterosis. ARF6 localises to the nucleus and cytoplasm and is associated with pathways such as lateral root initiation, crown root development, and proteasomal degradation of IAA proteins. Studies of related genes in other species link the family to soluble solid content, ascorbic acid content, and nitrogen metabolism.