campbl31 - Mycelia Kingdom Fungi Chytridiomycota (ancestral...

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Mycelia
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Kingdom Fungi
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Chytridiomycota (ancestral fungi)
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Intro to Chytridiomycota Studies of the evolutionary relationships between chytrids and other fungi indicate. . that they may be a paraphyletic basal assemblage . This means that chytrids may give us a good picture of what the ancestors of fungi were like. …Chytrids are predominantly aquatic , and not terrestrial. This means that fungi probably got their start in the water, as did plants and vertebrates. Chytrids have flagellated gametes … No other fungi have flagella, which suggests that the other fungi [like plants] lost this trait at some point in their evolutionary history. …like other fungi, chytrids have chitin strengthening their cell walls. [Recall that similarly both plants and their ancestral algae both have cellulose cell walls.] http://www.ucmp.berkeley.edu/fungi/chytrids.html
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Fungal Ecology Fungi along with bacteria are principle decomposers The secrete exoenzymes to digest nutrients extracellularly, which are then brought into cells directly across plasma membranes Fungi are virtually the only organism capable of breaking down lignin (the stuff that makes wood woody) Some fungi act as disease-causing organisms of animals
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This note was uploaded on 06/03/2011 for the course BIO 113 taught by Professor Swenson during the Spring '08 term at Ohio State.

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campbl31 - Mycelia Kingdom Fungi Chytridiomycota (ancestral...

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