AP1 — Beta vulgaris subsp. vulgaris

Summary

BVRB_2G028110 (AP1) on sugar beet chromosome 2 encodes a MADS-box transcription factor containing MADS-box and MEF2-like domains. The protein localises to the nucleus and exhibits sequence-specific DNA binding and transcription factor activity. AP1 is associated with flower formation, floral meristem determinacy, carpel development, and regulation of photoperiodism and flowering. It has been connected to vernalization response, cold acclimation, and both up- and downregulation of the vernalization response. Additional associations include pH reduction, NO storage, cell differentiation, and positive regulation of transcription by RNA polymerase II. The gene is linked to petal number and floral organ identity traits. Studies of related genes in other species suggest the family broadly influences floral development and organ identity.