fungal infection: Fungal Infections of Plants
Serious damage is done to crops each year by fungal infections of plants such as smuts , rusts , ergots , and mildews . Dutch elm disease, a disease that has seriously depleted the number of elm trees in the United States, is caused by the fungus Ceratostomella ulmi. Such diseases are usually fought with fungicides or by developing resistant plants. See also diseases of plants .
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