Ophiostoma ulmi
Quick Summary
Ophiostoma ulmi is a fungus that causes Dutch elm disease, a devastating illness affecting elms and other trees. This fungus, belonging to the Ascomycota phylum, is spread primarily by bark beetles.
The disease was first identified in the Netherlands and has since caused significant losses in elm populations across Europe and North America. Symptoms include wilting, yellowing, and dropping of leaves, with a characteristic brown discoloration appearing in the sapwood of affected branches. Control measures focus on preventing beetle infestation and removing infected wood.
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Ascomycotanecator), Dutch elm disease (Ophiostoma ulmi), chestnut blight (Cryphonectria parasitica), and apple scab (Venturia inequalis).
Read Morenecator), Dutch elm disease (Ophiostoma ulmi), chestnut blight (Cryphonectria parasitica), and apple scab (Venturia inequalis).
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Dutch elm diseaseOne of these, O. ulmi (also known as Ceratocystis ulmi), was probably introduced into Europe from Asia during World War I. The disease was first identified in the United States in 1930. A federal eradication campaign in the late 1930s and early ’40s sharply reduced the numbers of…
Read MoreOne of these, O. ulmi (also known as Ceratocystis ulmi), was probably introduced into Europe from Asia during World War I. The disease was first identified in the United States in 1930. A federal eradication campaign in the late 1930s and early ’40s sharply reduced the numbers of…
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