'Ophiostoma ulmi' diaporamas de présentation

Ascomycetes: Phylum Ascomycota

3.14k views • 29 slides

Ascomycetes: Phylum Ascomycota

3.14k views • 29 slides

Nightmare on Elm Street

Nightmare on Elm Street. The Elms (genus Ulmus ). - >30 species in genus Europe has 5; N. America 8; Asia has 23 or more. - 2 ssp live in tropics - 6 spps native to the northeastern U.S., including Ulmus americana , the American elm. Many cultivars too.

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Dutch Elm Disease

Dutch Elm Disease. Ophiostoma ulmi (syn. Ceratocystis ulmi). Dutch Elm Disease. The American Elm is very susceptible Transmitted by elm bark beetles and root grafting Yellowing and wilting of branches in the crown of the tree Brown streaks in water conducting tissues .

726 views • 13 slides