The fungi responsible for the Great Irish Famine is
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the Ustilago
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the Rhizoctonia
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the Pythium
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the Phytophthora
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the Xanthomonas
D
Correct answer
Explanation
Phytophthora spp. are mostly pathogens of dicotyledons and are relatively host-specific parasites. Many species of Phytophthora are plant pathogens of considerable economic importance. Phytophthora infestans was the infective agent of the potato blight that caused the Great Irish Famine.