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Additional recommended knowledge
Urediniomycetes develop no basidiocarp, karyogamy occurs in a thick-walled resting spore (teliospore), and meiosis occurs upon germination of teliospore. They have simple septal pores without membrane caps and disc-like spindle pole bodies. Except for a few species, the basidia are transversally septate. Mannose is the major cell wall carbohydrate, glucose, fucose and rhamnose are the less prevalent neutral sugars and xylose is not present.
The class contains approximately 7400 species, distributed among approximately 215 genera, but can be much larger as many cryptic species are recognized. More than 95% of the species and 75% of the genera are placed in the order Uredinales. Due to the rapid accumulation of new data, the classification of Urediniomycetes is still under development. Currently, the class is divided into the orders Agaricostilbales, Atractiellales, Classiculales, Microbotryales, Septobasidiales, Sporidiales and Uredinales. Three subclasses (Urediniomycetidae, Agaricostilbomycetidae and Microbotryomycetidae) have been proposed. An attempt of integrated consensus-classification is presented below:
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Urediniomycetes". A list of authors is available in Wikipedia.|