ATM4 — Daucus carota subsp. sativus

Summary

DCAR_012365 (DcATM4) on carrot chromosome 3 encodes a MYB transcription factor with DNA-binding and transcription factor activity, along with calcium ion binding, protein dimerization, and kinase binding functions. It is associated with anthocyanin pigmentation in petioles, and with regulation of flavonoid, proanthocyanidin, and glucosinolate biosynthetic processes. The gene is linked to phlobaphene and pigment accumulation, cellular detoxification of cadmium ions, and response to sulfur starvation. Associations include root and petiole color, leaf trichome density, seed protein content, root epidermal cell length, shoot elongation under submergence, phosphorus response, iron concentration, and brassinosteroid content. DcATM4 is also associated with plant growth, thermotolerance, salt and drought stress tolerance, insect herbivory resistance, and resistance to Sclerotinia sclerotiorum. Studies of related genes in other species link the family to cuticle development, suberin biosynthesis, and glucosinolate accumulation.