AREB3 — Daucus carota subsp. sativus

Summary

DCAR_013520, designated DcAREB3 (also known as DPBF3 or DcDPBF3) on carrot chromosome 4, encodes a bZIP transcription factor with DNA-binding, transcription factor activity, and protein kinase activity, including calcium-dependent protein serine/threonine kinase activity. It localises to the nucleus, cytoplasm and plasma membrane. In carrot, DcAREB3 is associated with salt stress tolerance, and is linked to the regulation of abscisic acid-mediated signalling, stomatal opening and closure, seed germination, seedling development, leaf development, somatic embryogenesis, pollen maturation, carotenoid and triglyceride anabolism, sucrose metabolism, and the cellular response to carbon dioxide and absence of light. It has also been connected to agronomically relevant traits including biomass yield, seed yield, water use efficiency, transpiration rate, leaf elongation rate, root thickness, flowering time, and low-temperature stress response. Studies of related genes in other species link the family to salt tolerance, ABA signalling, stomatal conductance, and sucrose and oil synthesis.