ALS — Brassica oleracea

Summary

BoALS (BOLC102_C04P003040.1_BOLC102_V1) on cabbage chromosome 4 encodes an acetolactate synthase (ALS) enzyme, also known as acetohydroxyacid synthase (AHAS), which possesses acetolactate synthase, pyruvate decarboxylase, and 2-hydroxyacyl-CoA lyase activities, binds thiamine pyrophosphate, FAD, and magnesium, and localises to the chloroplast stroma as part of the acetolactate synthase complex. The gene is associated with branched-chain amino acid biosynthesis, particularly valine anabolism, as well as fatty acid alpha-oxidation, seed development, and responses to nutrients and herbicides. It has been linked to traits including oleic acid content, photosynthetic rate, seed weight, and plant height, and to herbicide tolerance. Studies of related genes in other species connect the family to resistance to sulfonylurea and imidazolinone herbicides, and to effects on carbohydrate, starch, and protein content, heterosis, and plant growth.