ATM4 — Daucus carota subsp. sativus

Summary

DCAR_013101 (DcATM4) on carrot chromosome 4 encodes a protein containing a Myb DNA-binding domain and SANT/Myb domain. The product exhibits sequence-specific DNA binding, transcription factor activity, and protein dimerization activity, and is localized to the nucleus, cytosol, root hair, and preprophase band. DcATM4 is associated with regulation of flavonoid and proanthocyanidin biosynthesis, glucosinolate biosynthetic processes, raffinose metabolism, trichome morphogenesis and spacing, epidermal cell fate specification, defense response to insects, drought recovery, and cellular detoxification of cadmium ion. It is linked to root color, root epidermal cell length, leaf trichome density, seed protein content, adventitious root number, shoot branching, phosphorus response, iron concentration, and photoperiod-sensitive flowering time. Studies of related genes in other species connect the family to suberin and cuticle deposition, glucosinolate accumulation, trichome differentiation, and drought response.