Data from: Genetic mechanism of non-targeted-site resistance to diquat in Spirodela polyrhiza

<p>Understanding non-target-site resistance (NTSR) to herbicides represents a pressing challenge as NTSR is widespread in many weeds. Using the giant duckweed (<em>Spirodela polyrhiza</em>) as a model, we systematically investigated genetic and molecular mechanisms of diquat resistance, which can only be achieved via NTSR. Screening the diquat resistance among 138 genotypes suggested more than 8.5-fold resistance differences. Further experiments suggested that diquat uptake and antioxidant-related processes jointly contributed to diquat resistance in <em>S. polyrhiza</em>. Using a genome-wide association approach, we identified candidate genes that are associated with diquat resistance in <em>S. polyrhiza</em>, which includes a homolog of dienelactone hydrolase.</p>