AAT1 — Nicotiana attenuata

Summary

A4A49_30856 (AAT1/CAT5) in coyote tobacco (Nicotiana attenuata) encodes a basic amino acid permease with L-lysine and L-glutamate transmembrane transporter activity, belonging to the AA/rel_permease1 family and containing a CAT_C domain. The gene is associated with basic amino acid transport, including L-arginine import, as well as cellular homeostasis, detoxification, ethylene anabolism, auxin signaling, and signal transduction. It is linked to fruit development, response to aluminum, and localization to the plasma membrane, vacuole, mitochondria, and cytoplasm. Associations with photosynthetic traits include net photosynthetic rate, quantum yield, transpiration rate, stomatal resistance, and photochemical quenching. The gene is also connected to plant biomass, flowering time, and resistance to Pseudomonas syringae. Studies of related genes in other species link the family to salt and drought tolerance, disease resistance, fruit ripening, and volatile ester production.