[DOC] [TLE] Dutch elm disease - Wikipedia [PAR] Dutch elm disease (DED) is caused by a member of the sac fungi (Ascomycota) affecting elm trees, and is spread by the elm bark beetle. The causative agents of DED are ascomycete microfungi. DED is spread in North America by three species of bark beetles (Family: Curculionidae, Subfamily: Scolytinae): [DOC] [TLE] Dutch Elm Disease [PAR] Dutch elm disease is caused by the vascular wilt fungus, Ophiostoma ulmi (
formerly,. Ceratocystis ... trees) via two species of elm bark beetles: ... It is also 
spread. [DOC] [TLE] Dutch elm disease - American Phytopathological Society [PAR] Symptoms progress quickly and death may occur rapidly in trees infected in early 
... Ophiostoma ulmi caused the original Dutch elm disease epidemic in Europe 
and ... The fungi are spread from these sites by their vectors - elm bark beetles (
Figure 9). Two beetle species spread the pathogens in North America: the 
smaller... [DOC] [TLE] How to Identify and Manage Dutch Elm Disease - Treesearch [PAR] Elm leaf beetles do not carry the Dutch elm disease fungus as elm bark ... DED 
can be caused by either of two closely related species of fungi: Ophiostoma ulmi 
... Root graft spread of DED is a very significant cause of tree death in urban 
areas... [DOC] [TLE] Dutch elm disease : Trees and Shrubs : Yard and Garden : Garden ... [PAR] Dutch elm disease is caused by 2 closely related fungi, Ophiostoma ulmi and ... 
The rate of spread down the tree depends on the susceptibility of the tree. ... Adult 
females of all three species of elm bark beetle lay eggs under the bark of... [DOC] [TLE] Bark Beetles and Symbiotic Fungi - MicrobeWiki [PAR] Apr 25, 2012 ... 5.1.1 Ophiostoma novo-ulmi; 5.1.2 Ophiostoma himal-ulmi; 5.1.3 Ophiostoma 
ulmi ... to prevent or contain the spread of certain diseases to valued tree stands. 
Bark ... The interaction between bark beetles, fungi, and species of trees a 
specific interaction. ... This process causes the tree to eventually kill itself. [DOC] [TLE] Dutch Elm Disease and Its Control - OSU Fact Sheets - Oklahoma ... [PAR] shade tree diseases in North America and has become one of the most widely ... 
The disease spread rapidly in Europe and by 1934 was found in most ... Dutch 
elm disease is caused by the fungi, Ophiostoma ulmi and O. ... the bark (Figure 2)
. In cross ... elms by several species of elm bark beetle: smaller European elm 
bark... [DOC] [TLE] Elm Tree Diseases & Pesticides | Home Guides | SF Gate [PAR] ... is caused by fungal pathogens (Ophiostoma ulmi) that are spread among trees 
by ... Two different beetle bark species transfer Dutch elm disease pathogens... [DOC] [TLE] Dutch Elm Diseases - Province of British Columbia [PAR] Dutch elm disease (DED) is caused by two species of fungi (Ophiostoma ulmi 
and ... from infected trees to healthy trees by at least three species of elm bark 
beetles. ... in B.C. DED may also be spread by the banded elm bark beetle (
Scolytus. [DOC] [TLE] Dutch elm disease (Forest Research) - Forestry Commission [PAR] Dutch elm disease is one of the most serious tree diseases in the world. It has 
killed over 60 million British elms in two epidemics and continues to spread today
. ... First epidemic caused by fungus Ophiostoma ulmi from the 1920s onwards ... 
and related fungus O. novo-ulmi, first recognised in the 1970s; Elm bark beetles 
in... [DOC] [TLE] Dutch Elm Disease - Tree Doctor - Michigan State University [PAR] Dutch Elm Disease (DED), caused by the fungus Ophiostoma ulmi (Buism.) ... 
The fungus is spread from tree to tree by elm bark beetles and through root grafts. 
... Both diseases have some similarities: lethal to native elm species, 
transmission by ... The symptoms may spread to other parts of the tree over 2 or 3 
seasons. [DOC] [TLE] Elm Bark Beetles and Dutch Elm Disease - Utah State University ... [PAR] Two major bark beetle species attack elm trees in. Utah; both can transmit Dutch 
Elm Disease (DED) , leading to tree death, ... (

Question: This tree disease is caused by a fungus, Ophiostoma ulmi, that is spread by 2 species of bark beetles
Answer: Dutch elm disease