Fungi Biol 121, Fall 2010, Tom Buckley 11 Oct 10 heterotrophs some are unicellular (yeasts) most are multicellular body = mycelium (many hyphae) feed by.

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Fungi Biol 121, Fall 2010, Tom Buckley 11 Oct 10 heterotrophs some are unicellular (yeasts) most are multicellular body = mycelium (many hyphae) feed by absorption some are septate, others ceonocytic cell walls strengthened by chitin coenocytic hypha septate hypha

Fungal life cycles Fig 31.5 hetero- = different -karyon = nucleus gamos = marriage Many spp only reproduce asexually (deuteromycetes)

Ascomycetes Fig dikaryotic hyphae ascus karyogamy plasmogamy meiosis mitosis ascospores conidia (asexual spores)

Basidiomycetes Fig dikaryotic hyphae basidia karyogamy plasmogamy meiosis basidiospores basidiocarpmushroom = basidiocarp

Importance of fungi Symbioses leaf-cutter ants mycorrhizae lichens

Importance of fungi Pathogens (mostly of plants) Medicine, biotech, foods chestnut blight ringworm penicillin Saccharomyces (beer & bread)