AAT1 — Triticum turgidum subsp. durum

Summary

TRITD5AV1G010090 (symbol AAT1, also known as CAT2, CAT3, CAT4, CAT5 and other synonyms) on durum wheat chromosome 5A encodes a basic amino acid permease with L-lysine, L-glutamate and general amino acid transmembrane transporter activity. The gene is associated with basic amino acid transport, cellular amino acid homeostasis, H₂O₂ biosynthesis, and response to nematodes. Its product localises 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, circadian rhythm, hydrogen peroxide accumulation and scavenging, reactive oxygen species homeostasis, jasmonic acid biosynthesis, pathogen resistance, auxin accumulation, and seedling and root growth. Studies of related genes in other species link the family to vacuolar amino acid transport, photorespiratory stress tolerance, hypersensitive cell death, and abscisic acid response.