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 repressor. Formation of heterodimers with Aux/IAA proteins may alter their ability to modulate early auxin response genes expression. Promotes flowering, stamen development, floral organ abscission and fruit dehiscence. Acts as repressor of IAA2, IAA3 and IAA7. Together with RIN13, promotes leaf senescence and cell death (PubMed:32446355). Homodimers and heterodimers. Interacts with the auxin-responsive proteins IAA12, IAA13, IAA17 and with ARF2. Binds to RIN13 in the nucleus (PubMed:32446355). Translocates to the nucleus in the presence of RIN13. Expressed in the whole plant. Expressed in the sepals and carpels of young flower buds. At stage 10 of flower development, expression in the carpels becomes restricted to the style. Also expressed in anthers and filaments. At stage 13, expressed in the region at the top of the pedicel, including the abscission zone. 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.