POL — Triticum turgidum subsp. durum

Summary

TRITD7AV1G064500, designated TtPOL, encodes a DNA polymerase on durum wheat chromosome 7A. The product possesses DNA-directed DNA polymerase, DNA ligase (ATP), and 5'-deoxyribose phosphate lyase activities, and contains BRCT and DNA polymerase X family domains. TtPOL is associated with DNA damage response, double-strand break repair, base-excision repair, and non-homologous end joining, as well as responses to UV-B, X-ray, heat, and arsenic. The gene has been connected to flowering time, embryo development, root morphology, cold tolerance, disease tolerance, and temperature stress response traits. Localisation evidence links the protein to the nucleus, cytosol, plasmodesma, and plant-type cell wall. Studies of related genes in other species connect the family to DNA damage repair, ionizing radiation resistance, and seed longevity.