Involved in the regulation of axillary shoot growth angle (PubMed:23663106). Promotes horizontal shoot growth (PubMed:23663106). Higly expressed in flower buds (PubMed:23663106). Expressed in branch attachment sites, vegetative buds and young fruits (PubMed:23663106). Pillar tree (erect shoot growth) phenotype. Belongs to the TAC family.