ACH1 — Brachypodium distachyon

Summary

BdACH1 (BRADI_2G40740V3) on chromosome 2 of Brachypodium distachyon encodes a nitrate transporter belonging to the major facilitator superfamily (MFS), with annotated nitrate and nitrite transmembrane transporter activity. The gene is associated with nitrate assimilation, cellular response to nitrate, and nitrite transport, and its product localises to the plasma membrane, tonoplast, and endomembrane system. BdACH1 has been linked to grain number, grain yield, and photosynthetic rate, as well as to seed nitrate content, cadmium uptake, lateral root initiation, root elongation, pathogen resistance, and nitrogen uptake efficiency. Studies of related genes in other species connect the family to nitrate transport from roots to shoots, nitrogen remobilisation, seed yield, and drought response, though these associations are not yet established for BdACH1 itself.