EPSPS Gene Copy Number and Whole-Plant Glyphosate Resistance Level in Kochia scoparia.
Where this comes from
- Record sourced from PubMed, PMID 27992501.
- Also identified by DOI 10.1371/journal.pone.0168295 and PMC identifier 5161467.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Glyphosate-resistant (GR) Kochia scoparia has evolved in dryland chemical fallow systems throughout North America and the mechanism of resistance involves 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) gene duplication. Agricultural fields in four states were surveyed for K. scoparia in 2013 and tested for glyphosate-resistance level and EPSPS gene copy number. Glyphosate resistance was confirmed in K. scoparia populations collected from sugarbeet fields in Colorado, Wyoming, and Nebraska, and Montana. Glyphosate resistance was also confirmed in K. scoparia accessions collected from wheat-fallow fields in Montana. All GR samples had increased EPSPS gene copy number, with median population values up to 11 from sugarbeet fields and up to 13 in Montana wheat-fallow fields. The results indicate that glyphosate susceptibility can be accurately diagnosed using EPSPS gene copy number.
Medical subject headings
- 3-Phosphoshikimate 1-Carboxyvinyltransferase
- Bassia scoparia
- Gene Dosage
- Glycine
- Herbicide Resistance