ATR2 — Cucumis sativus

Summary

CsATR2 (CSA_3G011620) on cucumber chromosome 3 encodes a protein of the AIB/MYC-like family, also known as CsMYC2, CsJAI1, and RD22BP1. The gene product is associated with diverse molecular functions including transcription corepressor and coactivator activity, SUMO transferase activity, and histidine phosphotransfer kinase activity. CsATR2 is linked to regulation of defense responses to insects, induced systemic resistance via ethylene signaling, glucosinolate biosynthetic processes, trichome spacing and papilla formation, seed maturation, and ascorbate biosynthesis. It localizes to the nuclear ubiquitin ligase complex, mediator complex, plasmodesmata, and Golgi. The gene is associated with traits including anther and petal length, seed protein content, submergence tolerance, fruit ripening, and phosphorus and potassium responses. Studies of related genes in other species link the family to chilling tolerance, drought tolerance, Botrytis resistance, and seed oil accumulation.