AAT1 — Zea mays

Summary

ZM00001EB406990 (ZmAAT1, also known as CAT2–CAT6 and CAT10–CAT11) on maize chromosome 10 encodes a cationic amino acid transporter with a CAT_C domain and an AA/rel_permease1 domain, possessing basic amino acid permease, L-lysine, L-glutamate, and general amino acid transmembrane transporter activities. The gene is associated with DHN-melanin biosynthesis, toxin and siderophore anabolism, asexual sporulation, L-arginine import, nitrogen fixation, gluconeogenesis, and PTGS. It is linked to osmotic stress and abscisic acid responses, as well as traits including brittle endosperm, plant color, ear length, leaf chlorophyll and carotenoid content, salt and heat tolerance, germination rate, grain number, grain yield, plant height, root length, proline and anthocyanin content, and oxidative stress response. Studies of related genes in other species connect the family to vacuolar amino acid transport, photorespiratory stress tolerance, pathogen resistance, and abiotic stress responses.