AAT1 — Triticum turgidum subsp. durum

Summary

TRITD5AV1G199100 (symbol AAT1) on durum wheat chromosome 5A encodes a basic amino acid permease with a CAT_C domain and an AA/rel_permease1 domain, possessing L-lysine, L-glutamate, and basic amino acid transmembrane transporter activity. The gene is associated with L-arginine import, basic amino acid transport, cellular amino acid homeostasis, H₂O₂ biosynthetic process, and response to nematode. Its product localizes to the tonoplast, plasma membrane, endoplasmic reticulum, mitochondria, nuclear envelope, and cytoplasm. AAT1 is associated with leaf senescence, stomatal closure and development, drought, cold, salt, and oxidative stress tolerance, seed dormancy and germination, hydrogen peroxide accumulation and scavenging, reactive oxygen species homeostasis, circadian rhythm, light response, jasmonic acid and auxin accumulation, pathogen resistance, and seedling and root growth. Studies of related genes in other species connect the family to vacuolar amino acid transport, photorespiratory stress tolerance, and hypersensitive cell death.