Week_5A__Ergot - February 17 Ergot and Ergotism THE CLASSIC...

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February 17 Ergot and Ergotism
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VERSATILE PATHOGEN SUSCEPTIBLE HOST FAVORABLE WEATHER THE “CLASSIC” DISEASE TRIANGLE
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VERSATILE PATHOGEN SUSCEPTIBLE HOST FAVORABLE WEATHER THE “CLASSIC” DISEASE TRIANGLE • Enzymes to degrade host • Abundant sporulation • Sexual + asexual reproduction • Tolerates extreme weather • Survive without host
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VERSATILE PATHOGEN SUSCEPTIBLE HOST FAVORABLE WEATHER THE “CLASSIC” DISEASE TRIANGLE Cool or warm; wet
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VERSATILE PATHOGEN SUSCEPTIBLE HOST FAVORABLE WEATHER THE “CLASSIC” DISEASE TRIANGLE • Genetically uniform • Few/no defenses • Monoculture
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VERSATILE PATHOGEN SUSCEPTIBLE HOST FAVORABLE WEATHER TIME THE “MODERN” DISEASE PYRAMID
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February 17 Ergot and Ergotism: Some of history’s real mysteries!
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Ergot Claviceps purpurea
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sclerotium Ergot
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Ergot
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Sclerotium “Club” heads where spores are produced
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Honeydew - nectar Containing asexual Spores of the ergot fungus
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Ergot Alkaloids and Their Effects Ergotamine-vasoconstrictor, dry gangrene
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Week_5A__Ergot - February 17 Ergot and Ergotism THE CLASSIC...

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