Naturally occurring target-site EPSPS mutations and moderate EPSPS over-expression confer glyphosate resistance in Lolium perenne ssp. multiflorum biotypes from Argentina.
BACKGROUND Glyphosate resistance in Lolium perenne ssp. multiflorum (Italian ryegrass), a major weed in temperate cropping systems, threatens effective weed control and crop productivity. This study characterized the glyphosate response and target-site glyphosate resistance mechanisms in three biotypes (PA, MG and HE)...