AAT1 — Zea mays

Summary

ZM00001EB218400 (ZmAAT1, also known as CAT2, CAT3, CAT4, CAT5, CAT6, CAT10, CAT11, and AAT1) on maize chromosome 5 encodes a basic amino acid permease with L-lysine, L-glutamate, and general amino acid transmembrane transporter activity, belonging to the AA/rel_permease1 family. The gene is associated with osmotic stress and abscisic acid responses, and has been linked to traits including brittle endosperm, plant color, ear length, leaf chlorophyll and carotenoid content, salt and heat tolerance, germination rate, grain number, grain yield, plant height, and root length. It is also connected to drought and cold tolerance, senescence, stomatal development, seed germination, hydrogen peroxide accumulation and scavenging, programmed cell death, circadian rhythm, hypersensitive response, leaf amino acid concentration, salicylic acid accumulation, and resistance to pathogens such as Pseudomonas syringae and Colletotrichum higginsianum. The protein localizes to the tonoplast, plasma membrane, endoplasmic reticulum, mitochondria, and nuclear envelope.