GGT1 — Daucus carota subsp. sativus

Summary

DCAR_024439 (DcGGT1) on carrot chromosome 7 encodes an aminotransferase class I/class II large domain-containing protein with glutamate-glyoxylate transaminase, alanine-glyoxylate transaminase, nicotianamine aminotransferase, and 1-aminocyclopropane-1-carboxylate synthase activities. The gene is associated with photorespiration, L-alanine and tyrosine breakdown, ethylene anabolism, and response to hypoxia. It has been linked to fruit ripening, seed germination, seed yield, root elongation, plant growth, flowering time, senescence, and oxidative stress tolerance. Associations also include hydrogen peroxide and proline accumulation, ABA sensitivity, trichome development, disease resistance, and systemic resistance. The protein localises to multiple compartments including the amyloplast membrane, chloroplast stroma, mitochondria, cytosol, and nucleus. Studies of related genes in other species link the family to glutathione catabolism, UV-B stress response, and virus resistance.