Fungi Biol 121, Fall 2010, Tom Buckley 11 Oct 10 heterotrophs some are unicellular (yeasts) most are...
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Transcript of Fungi Biol 121, Fall 2010, Tom Buckley 11 Oct 10 heterotrophs some are unicellular (yeasts) most are...
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
coenocytichyphaseptate
hypha
Fungallife cycles
Fig 31.5
hetero- = different-karyon = nucleus
gamos = marriage
Many spp only reproduce asexually (deuteromycetes)
Ascomycetes
Fig 31.17
dikaryotichyphae
ascus
karyogamy
plasmogamy
meiosis
mitosis
ascospores
conidia(asexual spores)
Basidiomycetes
Fig 31.19
dikaryotichyphae
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 blightringworm
penicillinSaccharomyces (beer & bread)