NHX1 — Nicotiana attenuata

Summary

A4A49_27935 (NHX1/NHX7) on chromosome 6 of coyote tobacco (Nicotiana attenuata) encodes a cation/H⁺ exchanger of the CPA1 family with sodium:hydrogen exchanger, lithium:proton antiporter, potassium:proton antiporter and sodium transporter activities, plus protein kinase and NAD ADP-ribosyltransferase activities. The gene is associated with sodium import and transport, lithium export and transport, potassium ion membrane transport and import, cell pH regulation, cellular and potassium ion homeostasis, response to superoxide, nitric oxide anabolism, lateral root morphogenesis, and protein localisation to the plasma membrane. It localises to the tonoplast, vacuolar membrane, endosome, retromer complex, MVB, chloroplast envelope and plastid. Associations include leaf potassium content, sodium uptake, yield, photosynthetic rate, stomatal resistance, transpiration rate, root volume and length, plant height, abscisic acid and jasmonic acid sensitivity, UV-B light sensitivity, high temperature stress response, disease tolerance, and auxin content.