Lecture Notes 4.23

Lecture Notes 4.23 - T he Phylogeny of Fungi...

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The Phylogeny of Fungi Chytridiomycetes Zygomycetes Glomeromycetes Ascomycetes Basidiomycetes Chytridiomycetes Earliest diverging line producing motile flagellated zoospores Many species known including free-living cells and parasites of animals, plants and protists Batrachochytrium dendrobatidis – cause of chytridiomycosis of frogs that is currently causing massive die-off of frogs worldwide chytrid infects epidermis and interferes w/ ability to respire across skin Zygomycetes Known primarily for role in food spoilage All coenocytic Asexual and sexual reproduction Closely related microsporidia o Obligate parasites of animals and protists o Tiny genomes (2.9 mbp – smaller than E. coli ) o Opportunistic infection of immune-compromised individuals Glomeromycetes Small group (only 160 species) with major ecological role All form endomycorrhizae (arbuscular mycorrhizas) Ascomycetes Large and highly diverse group Production of asci – fusion of 2 haploid nuclei of different mating
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Lecture Notes 4.23 - T he Phylogeny of Fungi...

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