AREB3 — Daucus carota subsp. sativus

Summary

DCAR_020616 (DcAREB3, also known as DPBF3) on carrot chromosome 6 encodes a bZIP transcription factor with calcium-dependent protein serine/threonine kinase activity, sequence-specific DNA binding, and protein homodimerization activity. In carrots, DcAREB3 is associated with salt stress tolerance, regulation of stomatal opening and closure, somatic embryogenesis, seed germination, seedling and leaf development, pollen maturation, carotenoid and triglyceride anabolism, sucrose metabolism, and cellular responses to carbon dioxide and absence of light. The gene is linked to biomass yield, seed yield, leaf elongation rate, water use efficiency, transpiration rate, root thickness, flowering time, and lignin biosynthesis. Related genes in other species connect the family to abscisic acid signaling, stomatal conductance, salt tolerance, fatty acid desaturation, sucrose and oil synthesis, cuticle formation, and xylem fiber cell death.