GT1 — Brachypodium distachyon

Summary

BdGT1 (BRADI_1G49470V3) on chromosome 1 of Brachypodium distachyon encodes an oligopeptide transporter belonging to the OPT family, with oligopeptide transmembrane transporter activity. The gene is associated with oligopeptide and protein transport, as well as pollen sperm cell differentiation, and its product localises to the membrane and cytoplasm. BdGT1 is associated with cadmium tolerance, flowering time, and glutathione transport, with overexpression studies connecting it to altered cadmium distribution, phytochelatin content in sink organs, and glutathione content in shoots. Studies of related genes in other species link the family to peptide transport, metal homeostasis, zinc transport into shoots, and cadmium accumulation in reproductive sink organs. Sequence similarity connections further associate the family with agronomic traits including grain number, tiller number, plant height, drought and cold tolerance, seed germination, and flowering time.