An international team of researchers at the Max Planck Institute for Developmental Biology have identified the strain of Phytophthora infestans that caused the Irish Potato Famine of 1845-1852. In the thick of blight, botanists classified it as a mildew-causing fungus of the Botryotinia genus. In the 20th century it was reclassified as Phytophthora but was …

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