Barberry

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Barberry
Aecium
Aecium
Receptive Hyphae/ Spermatia
Aeciospores
Spermogonium
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Uredia and Uredospores
From The Fifth Kingdom Online
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From Tom Volk webpage
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2 - celled Teliospores of Puccinia graminis
From The Fifth Kingdom Online
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Puccinia pathway
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Cedar Apple RustTelial horns from gall on red
cedar
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Cedar Apple Rust Gymnosporangium
juniperi-virginianaeG. globosum cedar
hawthorne rust
Apple host (Aecial stage)
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IntroductionHost groups 9 species of white
pines native to North America, 1 species in
Wisconsin
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IntroductionHost groups 50 species of Ribes
native to North America, 11 species in Wisconsin
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IntroductionEastern white pine, western white
pine, and sugar pine

• Valued by the forest products industry since the
  earliest settlers arrived

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White pine blister rust cycle
uredinium
do not overwinter
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IntroductionResearch goal

• To contribute knowledge
• of the Ribes-rust interaction

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Ribes missouriense a native, wild, woodland
understory shrub
Highly abundant in Dane County
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Dry bean rust Uromyces appendiculatus
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Uredospores of Bean rust Uromyces appendiculatus
Uromyces appendiculatus uredospore germinating
ona bean leaf 5 h after inoculation
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Soybean rust (www.sbrusa.net)Phakopsora
pachyrhizi (573)
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Rust spore movement with Hurricane IvanSeptember
16, 2004
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Predicted wind movement
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Coffee rust Hemileia vastatrix