Fungi4 - Fungi Basidiomycota: The Club Fungi The division...

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Fungi Basidiomycota: The Club Fungi The division of fungi known as the club fungi, Basidiomycota, includes some of the most familiar fungi. Mushrooms, puffballs, and shelf fungi are all members of this group, as are the plant rusts and smuts. This group, which contains approximately 15,000 known species, is distinguished by the presence of a club- shaped reproductive organ called the basidium. This organ is most likely derived from the ascus found in Ascomycota (see Ascomycota Structure ), with which it shares several characteristics. Both originate as a binucleate, dikaryotic structure and serve as a site for karyogamy and meiosis. They differ in that the basidium bears its spores outside while the ascus retains them inside the structure. The role of the basidium in sexual reproduction is discussed in Heading . Structure Figure%: Structure of the Basidiomycota Haploid spores grow into cottony tangles of hyphae called mycelia. These mycelia usually grow under the surface until they meet up with another mycelium. The two join (plasmogamy) and
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This note was uploaded on 01/27/2012 for the course BIOLOGY BSC1005 taught by Professor Rodriguez during the Winter '09 term at Broward College.

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Fungi4 - Fungi Basidiomycota: The Club Fungi The division...

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