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Dow gains US patent for Enlist maize

Dow AgroSciences has received a US patent for its genetically modified herbicide-tolerant Enlist maize (DAS40278). The patent (8,598,413) covers maize with tolerance to aryloxyphenoxy propionate herbicides, and 2,4-D and other phenoxy herbicides. It also includes stacking with other traits. Enlist maize allows the application of herbicides to control grasses and broadleaf weeds. Dow was previously granted a patent (7,838,733) covering tolerance to 2,4-D in maize and other monocotyledonous crops and another (8,283,522) covering an aryloxyalkanoate dioxygenase gene and enzyme conferring tolerance to 2,4-D and pyridyloxyacetate herbicides in dicotyledonous plants such as soybeans and cotton (Agrow No 650, p 21). The company plans to introduce Enlist maize in the US in 2015 subject to regulatory approvals. Commercialisation has been delayed by the USDA's call for an environmental impact statement (Agrow No 664, p 14).



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