Potato blight fungus (Phytophthora infestans) Science Image

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Coloured scanning electron micrograph (SEM) of a section of a potato leaf infected with potato blight fungus (Phytophthora infestans). Phytophthora infestans infection results in severe damage to the potato plant, and was responsible for the 1845 Irish potato famine. Magnification: x143 at 6x7cm size.