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. 2009 Dec 14;107(3):1029–1034. doi: 10.1073/pnas.0906649107

Fig. 1.

Fig. 1.

Increase in genomic copy number of EPSPS correlates with reduced shikimate accumulation in 12 individuals each of glyphosate-resistant (filled circles) and -susceptible (open triangles) A. palmeri plants. Increase in genomic copy number of EPSPS is relative to ALS as measured using quantitative PCR on genomic DNA. Shikimate accumulation was measured after incubation in 250 μM glyphosate in an in vivo leaf disk assay.