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Dow awarded new <i>Xenorhabdus</i> spp patent

Dow AgroSciences has been granted a patent by the US Patent and Trademark Office for interchangeable insecticidal toxin complex (TC) proteins derived from the soil bacteria, Xenorhabdus spp and Photorhabdus spp. The patent (US 8,084,418) covers the use of a “stand-alone” protein derived from P luminescens with one or two synergistic “potentiator” toxins from Xenorhabdus spp. This latest patent brings Dow’s portfolio in this area to ten. The company notes that Xenorhabdus spp toxin proteins are particularly effective against lepidopteran pests and Photorhabdus spp toxins against coleopteran pests. It suggests that the combination of TC technology could provide a useful alternative or supplement to Bt technology in genetically modified insect-resistant crops.

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