The acquired ability of a plant population to overcome herbicides of various chemotype and mode of action is regarded as multiple herbicide resistance (MHR). This problem is particularly prevalent in weeds of wheat, including ryegrass (Lolium) and black grass (Alopecurus myosuroides), placing economic burden on arable farmers and increasing concerns over food shortages for an ever increasing world population.  Compared with herbicide-susceptible black grass, resistant populations have been shown to contain elevated levels of antioxidant polyphenols and oxidised/reduced forms of glutathione (GSH), as well as a GST (AmGSTF1), potentially involved in xenobiotic metabolism. This up-regulation, which was able to induce an MHR-like phenotype when transformed in Arabidopsis thaliana, is consistent with non-target site resistance. This presentation will discuss these developments together with an exploration of small molecule solutions to multiple herbicide resistance.

Chemical tools for investigation of multiple herbicide resistance (MHR) in black grass (<i>Alopecurus myosuroides</i>)

244th National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.

Chemical tools for investigation of multiple herbicide resistance (MHR) in black grass (Alopecurus myosuroides)