AHAS structural changes caused by mutations result in differences in binding affinity and resistance to two herbicides in Cyperus difformis L.
As a malignant weed in paddy systems, Cyperus difformis L. (C. difformis) has evolved resistance to acetohydroxyacid synthase (AHAS, EC 2.2.1.6), also known as acetolactate synthase (ALS), inhibiting herbicides such as pyrazosulfuron-ethyl and bensulfuron-methyl due to prolonged selection pressure. This study systemati...