Ahri Snapshots

The AHRI research paper: Glyphosate resistance in Tridax procumbens via a novel EPSPS Thr-102-Ser substitution", by Li et al, was published in the Journal of Agricultural and Food Chemistry 2018.This paper is a collaborative effort with researchers coming from China to AHRI and with modelling from Alex Nyporko from Kiev, Ukraine. Lead author Dr Jingbo Li from Hunan University and second author Dr Qiong Peng were visiting fellows in AHRI supported by the China Scholarship Council.In this research, it was first established that Tridax, a global tropical weed species, evolved glyphosate resistance in the Ord River irrigation area in north-western Western Australia.This is the first report of glyphosate resistance in Tridax. The mechanism of glyphosate resistance was studied.  Various possible resistance mechanisms were NOT responsible for resistance (EPSPS gene amplification, different glyphosate uptake or translocation). In this glyphosate-resistant Tridax population, the glyphosate resistance mechanism is