Constitutive overexpression of EPSPS by gene duplication is involved in glyphosate resistance in Salsola tragus.
Marcos YanniccariCandelario Palma-BautistaJosé Guadalupe Vázquez-GarcíaRamón GigónCarol Ann Mallory-SmithRafael De PradoPublished in: Pest management science (2022)
The current study reports EPSPS gene duplication for the first time as a mechanism of glyphosate resistance in S. tragus populations. The increase of glyphosate dose needed to kill R1 and R2 plants was linked to the EPSPS transcript abundance and level of EPSPS activity. This evidence supports the convergent evolution of the overexpression of the EPSPS gene in several Chenopodiaceae/Amaranthaceae species adapted to drought environments and the role of gene duplication as an adaptive advantage for plants to withstand stress. © 2022 Society of Chemical Industry.