AAT1 — Nicotiana attenuata

Summary

A4A49_32936 (CAT1/AAT1) in coyote tobacco (Nicotiana attenuata) encodes a basic amino acid permease with L-lysine, L-glutamate and basic amino acid transmembrane transporter activity, belonging to the CAT_C and AA/rel_permease1 domain families. The gene is associated with L-arginine import, basic amino acid transport, cellular homeostasis, detoxification, ethylene anabolism, auxin signaling, and response to aluminum. It is linked to plant-type vacuole, mitochondria, plasmalemma, and intracellular membrane-bounded organelle localisation. 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, drought, oxidative stress, and aluminum stress tolerance, as well as fruit ripening, volatile ester production, and disease tolerance.