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New strain of Plum Pox Virus in Canada

The Canadian Food Inspection Agency (CFIA) is reporting that a new strain of Plum Pox Virus (PPV, Potyvirus) was discovered during the 2008 surveys for this pathogen in Canada. The strain, PPV-rec, had previously been found only in Europe. The discovery was made on plum rootstocks with grafted apricot, peach and plum branches, by an Ontario homeowner surveying the trees. It is thought to be an isolated occurrence. Scientists are working to determine the host range of this new strain and whether it can be transmitted by aphids, but the find is believed to be an isolated occurrence. More information is available at the CFIA’s Plum Pox Virus page.

Pennsylvania and parts of Canada have also had outbreaks of PPV over the past several years, but the virus has not yet been found in New England. For more information about PPV, check out the fact sheet on the MIPOP website.

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