AAT1 — Nicotiana attenuata

Summary

A4A49_40651 (AAT1, also known as CAT8) 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. This gene is associated with L-arginine import, basic amino acid transport, cellular homeostasis, detoxification, ethylene anabolism, auxin signaling, and fruit development. It has been linked to photosynthetic traits including quantum yield, net photosynthetic rate, transpiration rate, stomatal resistance, and photochemical quenching, as well as plant biomass, flowering time, and resistance to Pseudomonas syringae. The encoded protein localizes to the membrane, plant-type vacuole, mitochondria, plasmalemma, and cytoplasm. Studies of related genes in other species connect the family to salt, drought, and oxidative stress tolerance, viral and pathogen resistance, fruit ripening and flavor, and circadian rhythm.