AP3 — Brassica oleracea

Summary

BoAP3, located on chromosome 8 of cabbage (Brassica oleracea), encodes a MADS-box transcription factor containing K-box and MEF2-like domains. The protein exhibits DNA-binding transcription factor activity, RNA polymerase II-specific regulatory region binding, protein dimerization activity, and nucleosome array spacer activity. BoAP3 is associated with the specification of petal and stamen identity, maintenance of floral organ and meristem identity, carpel and pistil development, seed coat development, megagametogenesis, and responses to silver ion, actidione, biotic stimuli, osmotic stress, and heat stress. It localises to the nucleus, cytosol, cytoplasm, plasmodesma, endosperm protein body, and ISWI-type and SWR-C complexes. The gene is linked to numerous floral and reproductive traits, including flower morphology, petal number, stamen length, cytoplasmic male sterility, photoperiod-sensitive flowering time, seed longevity, leaf curling, auxin sensitivity, jasmonic acid content, and high temperature stress response.