Lecture 13, Ch. 31

Lecture 13, Ch. 31 - •asci sexual spores •conidia...

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Lecture #13 Lecture #13 Date ______ Date ______ Chapter 31 ~ Fungi
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Fungi Fungi Heterotrophic by absorption (exoenzymes) Decomposers (saprobes), parasites, mutualistic symbionts (lichens) Hyphae: body filaments •septate (cross walls) •coenocytic (no cross walls) Mycelium: network of hyphae Chitin cell walls (polysaccharide)
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Fungus Life Cycle Fungus Life Cycle QuickTime and a Cinepak decompressor are needed to see this picture.
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Fungi Diversity, I Fungi Diversity, I Phy: Chytridiomycota •aquatic fungi; chytrids •lineage closest to protists (flagella) Phy: Zygomycota Rhizopus (food mold) •mycorrhizae: mutualistic with plant roots •zygosporangia: resistant structure (freezing and drying)
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Fungi Diversity, II Fungi Diversity, II Phy.: Ascomycota •sac fungi • yeasts, truffles, morels, Sordaria
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Unformatted text preview: •asci: sexual spores •conidia: asexual spores • Phy.: Basidiomycota • club fungus •mushrooms, puffballs, shelf fungus, rusts •basidiocarps: produce sexual spores Specialized Lifestyles, I Specialized Lifestyles, I • Molds •only the asexual stage (asexual spores) • Penicillium (antibiotic, cheese) • Yeasts •unicellular, asexual budding • Saccharomyces (bread, alcohol) Specialized Lifestyles, II Specialized Lifestyles, II • Lichens • symbiotic association held in a hyphae mesh •alga provides food, fungus provides physical environment •pioneer organisms •air pollution detection • Mycorrhizae •root and fungi mutualism •found in 95% of vascular plants •exchange of organic minerals •increases absorptive surface of roots...
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Lecture 13, Ch. 31 - •asci sexual spores •conidia...

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