AMT1 — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.5HG0527890, designated HvAMT1 on barley chromosome 5H, encodes an anthranilate synthase alpha subunit (EC 4.1.3.27) with aminodeoxychorismate synthase activity, a component of the anthranilate synthase complex localised to the chloroplast stroma. The gene is associated with tryptophan, auxin and folate biosynthesis, the shikimate pathway, secondary metabolism, and responses to ethylene, wounding and bacteria. It has been connected to regulation of auxin biosynthesis, stomatal opening, virus-induced post-transcriptional gene silencing, and sporulation. Traits linked to HvAMT1 include adventitious and lateral root formation, root growth inhibition, panicle development, ammonium uptake, sulfur nutrition response, and alpha-methyltryptophan resistance. Related genes in other species link the family to defense response, phytoalexin biosynthesis, ammonium transport, and primary root elongation.