Geographical variation in resistance to acetyl‐coenzyme A carboxylase‐inhibiting herbicides across the range of the arable weed Alopecurus myosuroides (black‐grass)

• DOI: 10.1111/j.1469-8137.2010.03233.x
• Publication Date: 2010-03-22T18:32:22Z
• Authors: Christophe Délye; Séverine Michel; Aurélie Bérard; Bruno Chauvel; Dominique Brunel; Jean‐Philippe Gui...; Fabrice Dessaint; Valérie Le Corre
• Keywords: Arable land

• The geographical structure of resistance to herbicides inhibiting acetyl-coenzyme A carboxylase (ACCase) was investigated in the weed Alopecurus myosuroides (black-grass) across its range gain insight into process plant adaptation response anthropogenic selective pressures occurring agricultural ecosystems. We analysed 297 populations distributed six countries A. myosuroides' main area occupancy. frequencies plants resistant two broadly used ACCase inhibitors and seven mutant, alleles were assessed using bioassays genotyping, respectively. Most not endowed by mutant alleles. Resistance allele distribution patterns characterized mosaicism. prevalence differed among countries. clearly evolved redundant evolution a set or genes, most which remain unidentified. shaped variation herbicide pressure at both individual field level national level.