Auxin response factors (ARFs) are transcriptional factors that bind specifically to the DNA sequence 5'-TGTCTC-3' found in the auxin-responsive promoter elements (AuxREs). Seems to act as transcriptional activator. Formation of heterodimers with Aux/IAA proteins may alter their ability to modulate early auxin response genes expression. Regulates both stamen and gynoecium maturation. Promotes jasmonic acid production. Partially redundant with ARF8. Homodimers and heterodimers. Expressed in the whole plant. Expressed in sepals at stages 11, 12 and 13 of flower development. Highly expressed in petals at stages 9-10, decreases at stage 11 and disappears after flower stage 12. In anthers, expressed at stage 11 in the tapetum, disappears early in stage 12 when the tapetum degrades and reappears throughout the anther late in stage 12 to persist at least until stage 13. In stamen filaments, expressed at stages 12 to 13, especially near the apical end of the filament. Expressed throughout the gynoecium at early stages up to stage 12, especially strongly in ovules. Expression in gynoecium decreases late in stage 12, but persists through stage 13, especially near the apical end including the style. Repressed by miR167. Interactions between auxin response factors (ARFs) and Aux/IAA proteins occur through their C-terminal dimerization domains III and IV. May be due to a competing acceptor splice site. Belongs to the ARF family.