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Fungi

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

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Fungi

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  1. Fungi • The decomposers

  2. Ecological Importance Symbiosis with plants (mycorrhizae) Decomposition

  3. Economic Importance Fermentation Food

  4. Economic Importance:Antibiotics

  5. Zygomycota Ascomycota Basidiomycota

  6. 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

  7. Heterokaryotic stage Fusion of nuclei Fusion of cytoplasm Diploid stage Haploid stage

  8. Zygomycota Zygote fungi Rhizopus stolonifer Pilobolus crystallinus

  9. Ascomycota: Sac fungi Peziza Morels Ergot Penicillium

  10. Morelss

  11. Ergot alkaloids Responsible for Salem witch trials? Ergotamine is a precursor to LSD

  12. Basidiomycota: Club fungi

  13. Pileus Stipe Gills

  14. 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

  15. Lichena symbiotic relationship between fungi and algae or cyanobacteria (commonly Nostoc)

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