Rediscovery of an unusual chytridiaceous fungus new to the order Rhizophydiales

The newest order in Chytridiomycota, Rhizophydiales, shows remarkable genetic divergence and zoospore ultrastructural diversity. From submersed mud from a marsh near an oligotrophic lake in the Patagonia region of Argentina, we isolated a previously undescribed chytrid in Rhizophydiales with unique...

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Detalles Bibliográficos
Autores principales: Letcher, P.M., Powell, M.J., Viusent, M.C.
Formato: JOUR
Materias:
28S rDNA
Chytrid
ITS rDNA
Phylogeny
Zoospore
divergence
fungus
lake
new species
oligotrophic environment
phylogeny
species diversity
spore
ultrastructure
Argentina
Patagonia
South America
Chytridiomycota
Fungi
Rhizophlyctis harderi
fungal DNA
ribosome DNA
article
Chytridiomycetes
classification
cytology
fungus spore
genetics
Liquidambar
microbiology
molecular genetics
pine
pollen
transmission electron microscopy
DNA, Fungal
DNA, Ribosomal
Microscopy, Electron, Transmission
Molecular Sequence Data
Pinus
Pollen
Soil Microbiology
Spores, Fungal
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00275514_v100_n2_p325_Letcher
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:The newest order in Chytridiomycota, Rhizophydiales, shows remarkable genetic divergence and zoospore ultrastructural diversity. From submersed mud from a marsh near an oligotrophic lake in the Patagonia region of Argentina, we isolated a previously undescribed chytrid in Rhizophydiales with unique 28S rRNA and ITS1-5.8S-ITS2 sequences and a distinctive zoospore and thallus. In a combined LSU + 5.8S phylogeny of representative taxa in the order, the nearest relative to this new species is Rhizophlyctis harderi, and their zoospores share several similar character states. A new genus is erected for this chytrid, the first to be brought into pure culture from this region. © 2008 by The Mycological Society of America.

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