ATM4 — Daucus carota subsp. sativus

Summary

DCAR_009712 (DcATM4) on carrot chromosome 3 encodes a MYB-family transcription factor with DNA-binding, chromatin-binding, transcription-factor-binding and protein-dimerization activities. It is associated with regulation of proanthocyanidin and flavonoid biosynthesis, glucosinolate biosynthetic processes, raffinose metabolism, trichome morphogenesis and spacing, epidermal cell fate specification, defense responses to insects, cellular detoxification of cadmium ions, response to sulfur starvation, and drought recovery. The gene has been linked to numerous traits including root color, root epidermal cell length, leaf trichome density, seed protein content, adventitious root number, phosphorus response, iron concentration, UV-B light sensitivity, jasmonic acid sensitivity, insect damage response, and shoot elongation under submergence. Studies of related genes in other species connect the family to cuticle development, suberin deposition, glucosinolate accumulation, drought response, and trichome differentiation.