Sulfosulfuron

Sulfosulfuron inhibits acetolactate synthase (ALS), also called acetohydroxyacid synthase (AHAS), a key enzyme in the biosynthesis of the branched-chain amino acids isoleucine, leucine, and valine. Plant death results from events occurring in response to ALS inhibition and low branched-chain amino acid production, but the actual sequence of phytotoxic processes is unclear. Sulfosulfuron is a selective early emergence herbicide used for the effective control of Phalaris minor in wheat crop.