ATR2 — Daucus carota subsp. sativus

Summary

DCAR_005631 (ATR2, also known as DcJAMYC10, DcJAI1, and DcRD22BP1) on carrot chromosome 2 encodes a protein of the AIB/MYC-like family, with annotated molecular functions including RNA polymerase II cis-regulatory region sequence-specific DNA binding, transcription corepressor and coactivator activities, and SUMO transferase activity. The gene is associated with the regulation of defense responses to insects, induced systemic resistance via ethylene signaling, glucosinolate biosynthetic processes, and seed maturation. It has been linked to traits including anther and petal length, seed protein content, submergence tolerance, and sulfur and potassium sensitivity. Studies of related genes in other species connect the family to chilling tolerance, drought tolerance, fruit quality, and resistance to pathogens such as Botrytis cinerea and Fusarium oxysporum.