AP1 — Beta vulgaris subsp. vulgaris

Summary

BVRB_6G139720 (AP1) in sugar beet (Beta vulgaris subsp. vulgaris) on chromosome 6 encodes a MADS-box transcription factor containing MADS-box, MEF2-like N, and K-box domains. The product has RNA polymerase II transcription regulatory region sequence-specific DNA binding and protein dimerization activities. AP1 is associated with flower formation, carpel development, floral meristem determinacy, flower development, cell differentiation, pH reduction, NO storage, and regulation of transcription by RNA polymerase II. It localizes to the nucleus. The gene is linked to petal number, floral organ identity, and organ identity. Studies of related genes in other species, including AP1A and AP1C, connect the family to similar developmental processes, though these associations are not established for sugar beet itself.