A novel amino acid substitution Trp574Arg in acetolactate synthase (ALS) confers broad resistance to ALS‐inhibiting herbicides in crabgrass (<scp><i>Digitaria sanguinalis</i></scp>)

Abstract

This study demonstrated that Trp574Arg substitution was the main reason for crabgrass resistance to ALS-inhibiting herbicides. To our knowledge, this is the first report of Trp574Arg substitution in a weed species, and is the first report of target-site mechanisms of herbicide resistance for crabgrass. © 2017 Society of Chemical Industry.