<i><scp>EPSPS</scp></i> amplification in glyphosate‐resistant spiny amaranth (<i>Amaranthus spinosus</i>): a case of gene transfer via interspecific hybridization from glyphosate‐resistant Palmer amaranth (<i>Amaranthus palmeri</i>)

Abstract

Glyphosate resistance in A. spinosus is caused by amplification of the EPSPS gene. Evidence suggests that part of the EPSPS amplicon from resistant A. palmeri is present in glyphosate-resistant A. spinosus. This is likely due to a hybridization event between A. spinosus and glyphosate-resistant A. palmeri somewhere in the lineage of the glyphosate-resistant A. spinosus plants. Published 2014. This article is a U.S. Government work and is in the public domain in the USA.