fungi biol 121, fall 2010, tom buckley 11 oct 10 heterotrophs some are unicellular (yeasts) most are...

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Fungi ol 121, Fall 2010, Tom Buckley 11 Oct 10 eterotrophs ome are unicellular (yeasts) ost are multicellular body = mycelium (many hyphae) eed by absorption ome are septate, others ceonocytic ell walls strengthened by chitin coenocytic hypha septate hypha

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Page 1: Fungi Biol 121, Fall 2010, Tom Buckley 11 Oct 10 heterotrophs some are unicellular (yeasts) most are multicellular body = mycelium (many hyphae) feed by

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

Page 2: Fungi Biol 121, Fall 2010, Tom Buckley 11 Oct 10 heterotrophs some are unicellular (yeasts) most are multicellular body = mycelium (many hyphae) feed by

Fungallife cycles

Fig 31.5

hetero- = different-karyon = nucleus

gamos = marriage

Many spp only reproduce asexually (deuteromycetes)

Page 3: Fungi Biol 121, Fall 2010, Tom Buckley 11 Oct 10 heterotrophs some are unicellular (yeasts) most are multicellular body = mycelium (many hyphae) feed by

Ascomycetes

Fig 31.17

dikaryotichyphae

ascus

karyogamy

plasmogamy

meiosis

mitosis

ascospores

conidia(asexual spores)

Page 4: Fungi Biol 121, Fall 2010, Tom Buckley 11 Oct 10 heterotrophs some are unicellular (yeasts) most are multicellular body = mycelium (many hyphae) feed by

Basidiomycetes

Fig 31.19

dikaryotichyphae

basidia

karyogamy

plasmogamy

meiosis

basidiospores

basidiocarpmushroom = basidiocarp

Page 5: Fungi Biol 121, Fall 2010, Tom Buckley 11 Oct 10 heterotrophs some are unicellular (yeasts) most are multicellular body = mycelium (many hyphae) feed by

Importance of fungi

Symbioses

leaf-cutter ants

mycorrhizae

lichens

Page 6: Fungi Biol 121, Fall 2010, Tom Buckley 11 Oct 10 heterotrophs some are unicellular (yeasts) most are multicellular body = mycelium (many hyphae) feed by

Importance of fungi

Pathogens (mostly of plants)

Medicine, biotech, foods

chestnut blightringworm

penicillinSaccharomyces (beer & bread)

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