AREB3 — Daucus carota subsp. sativus

Summary

DcAREB3 (DCAR_009107) on carrot chromosome 3 encodes a bZIP transcription factor with calcium-dependent protein serine/threonine kinase activity, sequence-specific DNA binding, and protein homodimerization activity. It localizes to the nucleus, cytoplasm, and plasma membrane. In carrot, DcAREB3 is associated with salt stress tolerance, somatic embryogenesis, seed germination, seedling development, leaf development, pollen maturation, and regulation of stomatal opening and closure. It is linked to abscisic acid-mediated signaling, reactive oxygen species metabolism, and the anabolism of carotenoids, unsaturated fatty acids, triglycerides, and sucrose. Associations with agronomic traits include biomass yield, seed yield, leaf elongation rate, water use efficiency, transpiration rate, root thickness, flowering time, and osmotic stress sensitivity. Studies of related genes in other species link the family to abscisic acid signaling, stomatal conductance, salt tolerance, and seed maturation.