AP1 — Oryza sativa Japonica

Summary

OsAP1 (OS03G0752800) encodes a MADS-box transcription factor with DNA binding, RNA polymerase II transcription regulatory region sequence-specific DNA binding, transcription corepressor activity, and protein dimerization activity. In rice, this gene is associated with reproductive transition, flowering time, inflorescence and floral meristem identity, and starch-related processes. It is linked to grain shape, grain weight, heading date, panicle development, tillering, and plant architecture. The gene is associated with regulation of auxin polar transport, photoperiod-sensitive flowering, and responses to high temperature and UV light. Studies of related genes in other species link the family to floral organ identity, flower senescence, and abscission, and to heading time and seasonality.