- Urediniomycetes
Taxobox
name = Urediniomycetes
image_width = 240px
image_caption = "Cronartium ribicola " (Uredinales :Cronartiaceae )
regnum = Fungi
divisio =Basidiomycota
subdivisio = Teliomycotina
classis = Urediniomycetes
classis_authority = D.Hawksw., B.Sutton & Ainsw.
subdivision_ranks = Orders
subdivision = See textUrediniomycetes is a diverse class of
fungi that includes several important plant pathogens causing forms of fungal rust. It is the only class in the subdivision Teliomycotina ofbasidiomycete s.Characteristics
Urediniomycetes develop no
basidiocarp ,karyogamy occurs in a thick-walled restingspore (teliospore ), andmeiosis occurs upon germination of teliospore. They have simpleseptal pore s without membrane caps and disc-like spindle pole bodies. Except for a few species, the basidia are transversally septate.Mannose is the majorcell wall carbohydrate,glucose ,fucose andrhamnose are the less prevalent neutral sugars andxylose is not present.ystematics
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 orderUredinales . Due to the rapid accumulation of new data, the classification of Urediniomycetes is still under development. Currently, the class is divided into the ordersAgaricostilbales ,Atractiellales ,Classiculales ,Microbotryales ,Septobasidiales ,Sporidiales andUredinales . Three subclasses (Urediniomycetidae, Agaricostilbomycetidae and Microbotryomycetidae) have been proposed. An attempt of integrated consensus-classification is presented below:
*Subclass: Microbotryomycetidae::Order: Cryptomycocolacales Oberwinkler & Bauer:::Family: Cryptomycocolacaceae Oberwinkler & Bauer::Order: Heterogastridiales Oberwinkler & Bauer:::Family: Heterogastridiaceae Oberwinkler & Bauer::Order: Leucosporidiales Sampaio, Weiss & Bauer::Order: Sporidiobolales Sampaio, Weiss & Bauer:::Family: Sporidiobolaceae Moore emend. Sampaio, Weiss & Bauer::Order: Microbotryales Bauer & Oberwinkler:::Family: Microbotryaceae Moore:::Family: Ustilentylomataceae Bauer & Oberwinkler:Taxa of the Microbotryomycetidae "incertae sedis ":::Family: Krieglsteineraceae Pouzar:::Family: Camptobasidiaceae Moore:::Genera: "Atractocolax", "Bensingtonia", "Colacogloea", "Kriegeria"
*Subclass: Agaricostilbomycetidae::Order: Agaricostilbales Oberwinkler & Bauer:::Family: Agaricostilbaceae Oberwinkler & Bauer:::Family: Chionosphaeraceae Oberwinkler & Bandon:Taxa of the Agaricostilbomycetidae "incertae sedis ":::Genera: "Bensingtonia", "Kondoa", "Kurtzmanomyces", "Mycogloea", "Sporobolomyces", "Sterigmatomyces", "Spiculogloea", "Zygogloea"
*Subclass: Urediniomycetidae::Order:Uredinales Arthur:::"14 families"::Order: Septobasidiales Couch ex Donk:::Family: Septobasidiaceae Maire:::Family: Pachnocybaceae Oberwinkler & Bauer::Order: Platygloeales Moore:Taxa of the Urediniomycetidae "incertae sedis ":::Family: Eocronartiaceae Jülich:::Genera: "Helicobasidium", "Herpobasidium", "Insolibasidium", "Jola", "Platycarpa", "Ptechetelium"*Other groups of uncertain position:::Order Atractiellales Oberwinkler & Bandoni:::Family: Hoehnelomycetaceae Jülich:::Family: Phleogenaceae Weese:::Family: Helicogloeaceae Jülich::Order: Classiculales Bauer, Begerow, Oberwinkler & Marvanová:::Family: Classiculaceae Bauer, Begerow, Oberwinkler & Marvanová::Order: Cystobasidiales (Bauer & Sampaio, in prep.)
References
*The Tree of Life page on Urediniomycotina [http://tolweb.org/Urediniomycotina/20528]
*The Classification of Dimorphic Basidiomycetes [http://www.crem.fct.unl.pt/dimorphic_basidiomycetes/Papers/DMBclassification/classification.htm#Class%20Urediniomycetes]
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