NHX1 — Nicotiana attenuata

Summary

A4A49_27933 (NHX1/NHX7) on chromosome 6 of coyote tobacco (Nicotiana attenuata) encodes a sodium:hydrogen exchanger with lithium:proton and potassium:proton antiporter activity, sodium transporter activity, NAD ADP-ribosyltransferase activity, protein kinase activity, and protein binding. It belongs to the cation/H+ exchanger CPA1 family and contains a cNMP-binding domain. The gene is associated with sodium import, lithium export, potassium ion import, cell pH regulation, cellular homeostasis, response to superoxide, nitric oxide anabolism, lateral root morphogenesis, and vacuolar protein sorting. It localizes to the tonoplast, vacuolar membrane, endosome, retromer complex, multivesicular body, chloroplast envelope, and plastid. Associations include leaf potassium content, sodium uptake, yield, photosynthetic rate, stomatal resistance, plant height, root length, disease tolerance, and responses to UV-B, high temperature, abscisic acid, and jasmonic acid.