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Metabolic Resistance to Herbicides: What we Know and Why it Matters

Todd Gaines, Colorado State University

Weeds can evolve resistance to herbicides through enzymatic mechanisms to metabolize and detoxify herbicide molecules. Recent advances have revealed specific genes controlling metabolic resistance such as cytochrome P450s, glutathione-S-transferase, and others, primarily in grasses but also in broadleaf weeds. Metabolic resistance can result in unpredictable cross-resistance patterns that further complicate management recommendations. This webinar will summarize major recent findings and outline current knowledge gaps for metabolic herbicide resistance.

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