ALS — Zea mays

Summary

ZM00001EB241810, also known as ALS, AHAS, or ZmIMR1, encodes an acetolactate synthase, a thiamine pyrophosphate-dependent enzyme that catalyses the first step in branched-chain amino acid biosynthesis. The gene is associated with acetolactate synthase activity, pyruvate decarboxylase activity, and 2-hydroxyacyl-CoA lyase activity, and its product localises to the chloroplast stroma as part of the acetolactate synthase complex. In maize, ALS is linked to valine and isoleucine biosynthesis, response to herbicide, and traits including imidazolinone sensitivity, herbicide damage, grain yield, drought tolerance, and salt tolerance. It has also been connected to callus induction, tiller number, stomatal resistance, and protein content. Studies of related genes in other species link the family to sulfonylurea herbicide resistance and aluminium tolerance.