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Spermagonium

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Spermagonium

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    4. 2 - celled Teliospores of Puccinia graminis

    5. Rust Reproductive Structures

    6. Puccinia pathway

    7. White Pine Blister Rust Host groups: 9 species of white pines native to North America, 1 species in WI

    8. Eastern white pine, western white pine, and sugar pine Valued by the forest products industry since the earliest settlers arrived

    9. Host groups: 50 species of Ribes native to North America, 11 species in Wisconsin

    13. Soybean rust (www.sbrusa.net) Phakopsora pachyrhizi (573)

    23. Smuts and Bunts Obligate parasites (cereals) Replace kernels with spore masses Historical famines 2 spores: teliospores and basidiospores (sporidia)

    24. Ustilago maydis corn smut (Agrios 583-584)

    27. Ustilago maydis Teliospore Release

    30. Loose Smut of Barley Ustilago nuda Agrios 584-588

    32. Stinking Smut or Bunt of Wheat Tilletia spp. (Agrios 588-593) Grow with tip of plant Oily smut kernels lead to explosions in combines Fishy smell

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