fungi
DESCRIPTION
Fungi. The decomposers. Ecological Importance. Symbiosis with plants (mycorrhizae). Decomposition. Economic Importance. Fermentation. Food. Economic Importance: Antibiotics. Zygomycota. Ascomycota. Basidiomycota. Characteristcs of fungi. Feed by absorption Most are multicellular - PowerPoint PPT PresentationTRANSCRIPT
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FungiThe decomposers
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Ecological Importance
Decomposition Symbiosis with plants(mycorrhizae)
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Economic Importance
Fermentation Food
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Economic Importance:Antibiotics
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Zygomycota
Ascomycota
Basidiomycota
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Characteristcs of fungi•Feed by absorption
•Most are multicellular•Thread-like filaments called
hyphae•Hyphae organized into mycelium•Asexual and sexual reproduction•Chitin cell walls
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Fusion of cytoplasm
Heterokaryotic stage
Fusion of nuclei
Diploid stage
Haploid stage
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ZygomycotaZygote fungi
Rhizopus stolonifer
Pilobolus crystallinus
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Ascomycota: Sac fungi
PezizaMorels
Ergot
Penicillium
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Morelss
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Ergot alkaloids
Responsible for Salem witch
trials?Ergotamine is a precursor to LSD
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Basidiomycota: Club fungi
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Pileus
StipeGills
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Fungi imperfecti (once called Deuteromycota)• Imperfect or asexual fungi
• Reproduce only vegetatively (asexually)• Many human diseases are imperfect fungi• Athlete’s foot, ringworm, candida “yeast”
infections• A fungi from this group is used to make Roquefort
and blue cheeses
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Lichena symbiotic relationship between fungi and algae or cyanobacteria (commonly Nostoc)
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