21-fungilout-11spring - 3 nasties(i Claviceps purpurea...

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AG V03/BIOL V23 Plant Biology Lecture: Fungi - (Ch 21) © copyright 2011 Marta D. de Jesus I. What is a fungus? A. all chemoheterotrophic 1. saprobes 2. some parasitic 3. predators 4. mutualistic B. how do they actually get nutrients? 1. secrete 2. absorb C. for all but one phylum 1. filamentous -> hypha(e) a. mycelium b. aseptate coenocytic c. septate D. chitin E. haplontic life cycle F. live in II. What are the phyla? A. some organisms that were considered “fungi” B. true fungal phyla 1. P: Chytridiomycota b. life cycle zoospore rhizoids mate plasmogamy karyogamy
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2. P: Zygomycota a. hyphae b. life cycle 1) zygospores 2) sporangium Rhizopus nigricans Pilobolus impact on us negative: positive microsporidians 3. P: Glomeromycota a. hyphae b. endomycorrhizal associations arbuscle blastospores Glomus Dikaryomycetes: conidium/conidia 4. P: Ascomycota Peziza a. LC ascus “fruiting body” dikaryon ascospores b. examples 1) Saccharomyces cerevisiae budding 2) Candida albicans 3) human foods Morchella
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Tuber 4) other human uses
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Unformatted text preview: 3) nasties (i) Claviceps purpurea ergotamine lysergic acid (ii) plant pathogens haustorium Monilinia Cryphonectria 5. P: Basidiomycota a. basidium b. LC spore fruiting body basidia basidiospores c. probably most familiar group 1) most of the edible fungi mushrooms Agaricus bisporus Lentinula edodes = shiitake Pleurotus ostreatus 2) not edible Amanita Omphalotus 3) a few have been used by shamans Psilocybe & Conocybe Amanita muscaria 4) other fruiting bodies besides mushrooms (some are edible) bolete Calvatia Geastrum Fomes Phallus ravenelii 5) but also some pests Ustilago maydis Puccinia graminis 6. former P: Deuteromycota Penicillium Aspergillus : A. oryzae aflatoxins Other genera III. Special symbioses with fungi A. mycorrhizae B. lichens 1. fungal partner 2. algal partner 3. growth form crustose foliose fructicose c. with animals 1. grazing animal gut 2. leaf-cutter ants & some termites...
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