BIOL 2P96 Lecture Notes - Lecture 2: Entomophthoromycota, Gametangium, Oomycete
26 Jul 2015
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Biol 2p96 - lecture 2: review, fungi vs. slime moulds. Similarities like fungi: produce spores in sporangia, saprophytic, produce fruiting bodies. Differences than fungi: no chitin in cell walls, no mycelium, are aggregates of amoeboid individuals, eat using phagocytosis. 2n assimilative hyphae: oogamous sexual reproduction, 2n oospores produced as zygotes following fertilization of haploid oospheres by haploid gametes, saprolegniales. Primary and secondary zoospores (dimorphic: pythiales and peronosporales. Sporangia may germinate directly (germ tube) or indirectly (cooler temperatures) Phylum chytridiomycota - ancient fungi: is polyphyletic, predominantly aquatic. Fungi most likely got their start in water, as did plants and vertebrates: occurs as unicellular or filamentous mycelium, possess: Potato wart disease (synchytrium endobioticum: reduces crop yield and edibility, spread easily, cause of 2000 pei quarantine. Caused by batrachochytrium dendrobanditis: phylum neocallimastigomycota rumen chytrids , this phylum is the reason cows digest cellulose. Makes them obligate anaerobes: no sexual stage, phylum blastocladiomycota, undergo sporic meiosis .
