AAT1 — Triticum turgidum subsp. durum

Summary

TRITD5AV1G018520 (symbol AAT1, also known as CAT2, CAT3, CAT4, CAT5) on durum wheat chromosome 5A encodes a protein with basic amino acid permease activity, L-lysine and L-glutamate transmembrane transporter activity, and amino acid permease activity. The gene is associated with L-arginine import, basic amino acid transport, cellular amino acid homeostasis, H₂O₂ biosynthetic process, and response to nematodes. It is linked to leaf senescence, stomatal closure, drought tolerance, cold tolerance, salt tolerance, seed dormancy, seed germination, oxidative stress tolerance, hydrogen peroxide accumulation and scavenging, reactive oxygen species homeostasis, circadian rhythm, light response, jasmonic acid biosynthesis, auxin accumulation, pathogen resistance, and programmed cell death. The encoded protein localises to the nuclear envelope, tonoplast, plant-type vacuole, ER, mitochondria, plasmalemma, and cytoplasm. Studies of related genes in other species link the family to vacuolar amino acid transport, photorespiratory stress tolerance, and hypersensitive cell death.