ALS — Triticum aestivum

Summary

TRAESCS6B02G317400, also known as ALS, AHAS, TaIMR1, or TaTZP5, encodes an acetolactate synthase (AHAS) on bread wheat chromosome 6B. The enzyme possesses acetolactate synthase, pyruvate decarboxylase, and 2-hydroxyacyl-CoA lyase activities, binds thiamine pyrophosphate, FAD, and magnesium, and is part of the acetolactate synthase complex localised to the chloroplast stroma. This gene is associated with branched-chain amino acid biosynthesis, particularly valine and isoleucine, as well as response to herbicide, detoxification, chloroplast organisation, and DNA repair. It is linked to imidazolinone and sulfonylurea herbicide sensitivity, herbicide tolerance, and aluminium resistance. Studies of related genes in other species connect the family to herbicide resistance, grain yield, drought tolerance, plant height, and tillering.