AP1 — Oryza sativa Japonica

Summary

Os07g0108900, also known as DEP, AP1, and SOC1, encodes a MADS-box transcription factor characterized by a MADS-box domain and K-box domain, with RNA polymerase II-specific DNA-binding and transcription corepressor activities. In rice, this gene is associated with reproductive transition, tillering, plant height, crown root development, and overall architecture. It is linked to the maintenance of inflorescence and floral meristem identity, floral organ specification, fruit morphogenesis, and regulation of auxin polar transport. The gene is also associated with heading date, grain shape, grain weight, panicle traits, drought tolerance, and responses to photoperiod, temperature, and UV light. Studies of related genes in other species link the family to floral meristem determination, flower senescence, abscission, and seed yield.