AG — Beta vulgaris subsp. vulgaris

Summary

BvAG (BVRB_8G188310) on sugar beet chromosome 8 encodes a MADS-box transcription factor with RNA polymerase II-specific DNA-binding activity. The gene is associated with the specification and maintenance of floral organ and meristem identity, particularly stamen and carpel development, as well as megagametogenesis, double fertilization, and seed dormancy release. It has been linked to numerous floral traits including flower morphology, stamen and carpel shape, petal number, inflorescence development, photoperiod-sensitive flowering time, and male sterility. Additional associations include abscisic acid breakdown, ethylene signaling regulation, responses to UV-A and high light intensity, and traits such as seed longevity, leaf morphology, nitrate uptake, and aphid response. Studies of related genes in other species connect the family to fruit ripening, carotenoid accumulation, and seed development processes.