Fungi. l First fungi were probably flagellated. –First fossils – 480 million years ago...
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![Page 1: Fungi. l First fungi were probably flagellated. –First fossils – 480 million years ago (Ordovician Period) –Molecular Clock suggests 1 billion years ago.](https://reader030.fdocuments.us/reader030/viewer/2022032517/56649cac5503460f9496e65d/html5/thumbnails/1.jpg)
Fungi
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Fungi
First fungi were probably flagellated. – First fossils – 480
million years ago (Ordovician Period)
– Molecular Clock suggests 1 billion years ago (Precambrian).
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General Characteristics Primarily
terrestrial Filamentous
– hyphae coenocytic septate
– mycelium– haustoria
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Fungal Hyphae
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General Characteristics(animal-like)
Heterotrophic– absorption
(saprobes)– parasitic– mutualistic
Cell Wall: Chitin Store sugar as
glycogen
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Fungal Reproduction Asexual
– haploid spores (conidia/sporangia) Sexual
– plasmogamy (dikaryon)
– karyogamy (diploid)
– Syngamy (diploid)
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Fungal Classification
ChytridsNuclerariids ZygomycetesFungi
Opisthokonts GlomeromycetesChoanoflagellates AscomycetesAnimals
Basidiomycetes
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Fungal Classification
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Division: Chytrids
Have flagella Coenocytic hyphae or unicellular Cell wall: chitin Saprobes or parasites May be most primitive fungi
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Division: Zygomycetes
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Division: Zygomycota
Coenocytic Fungi Mostly terrestrial (live
on decaying material Example: Rhizopus
(Black bread mold) Uses: birth control pills,
meat tenderizers, margarine coloring
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Division: Glomeromycetes
Arbuscular mycorrhizae– Coenocytic Fungi– Mutualistic - associated
with plant roots– increases surface area
for the absorption of water and nutrients
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Division: Ascomycetes
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Diviison: Ascomycetes
Septate fungi (sac fungi)
Saprobes, mutualistic Examples: Dutch Elm
Disease, yeasts, truffles, some molds
Uses: pathogens, food, cooking
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Division: Ascomycetes(Deuteromycota)
Imperfect fungi (no sexual cycle) Examples: Penicillium, Aspergillus, Predatory fungi
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Division: Basidiomycetes
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Division: Basidiomycetes
Septate Fungi (Club fungi)
Saprobes, parasites, mutualistic
Examples: mushrooms, toadstools, puffballs, shelf fungi, rusts, smuts
Uses: Food
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Division: Basidiomycota Fairy Rings
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Lichen Mutualistic -
association with a green algae or cyanobacteria and an ascomycota or basidiomycota
Pioneer organisms
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Microsporidia Are they Fungi?
– Parasitic Loss of organelles Tiny organelles
derived from mitochondria
– Cause disease in people with immune deficiency
– Used as pest control
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Ecological Impacts
Decomposers Pathogens Food Production