title: A revision of Plasmopara penniseti, with implications for the host range of the downy mildews with pyriform haustoria.
abstract: Plasmopara penniseti is the sole member of the genus Plasmopara parasitic to Poaceae, after the genus Viennotia had been described to accommodate Plasmopara oplismeni. Morphological, ultrastructural, and molecular phylogenetic data indicate that Plasmopara penniseti is not closely related to the generic type, and it is, therefore, transferred to the newly described genus Poakatesthia. The view that the genera of downy mildews with pyriform to vesicular haustoria (Basidiophora, Benua, Bremia, Paraperonospora, Plasmopara, Plasmoverna, and Protobremia) include species parasitic to Poaceae has to be discarded. All of these genera are apparently restricted to dicotyledonous hosts.
authors.affiliation: University of Hohenheim, Institute of Botany 210, Garbenstr. 30, 70599 Stuttgart, Germany. thines@uni-hohenheim.de
authors.forename: Marco
authors.initials: M
authors.lastname: Thines
authors.forename: Markus
authors.initials: M
authors.lastname: Göker
authors.forename: Franz
authors.initials: F
authors.lastname: Oberwinkler
authors.forename: Otmar
authors.initials: O
authors.lastname: Spring
mesh_terms: D004271:DNA, Fungal / Q000032:analysis; D003576:Electron Transport Complex IV / Q000235:genetics; D005656:Fungal Proteins / Q000235:genetics; D025301:Hyphae / Q000648:ultrastructure; D008855:Microscopy, Electron, Scanning; D008856:Microscopy, Fluorescence; D008969:Molecular Sequence Data; D009868:Oomycetes / Q000145:classification* / Q000235:genetics / Q000648:ultrastructure; D010935:Plant Diseases / Q000382:microbiology; D010944:Plants / Q000382:microbiology*; D006109:Poaceae / Q000382:microbiology*; D017422:Sequence Analysis, DNA
chemical_list: D004271:DNA, Fungal; D005656:Fungal Proteins; C117108:cytochrome C oxidase subunit II; D003576:Electron Transport Complex IV