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Phylogenetic position of the parasitoid nanoflagellate pirsonia inferred from nuclear-encoded small subunit ribosomal DNA and a description of Pseudopirsonia n. gen. and Pseudopirsonia mucosa (Drebes) comb. nov.

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons56662

Eller,  Gundula
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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Zitation

Kühn, S., Medlin, L., & Eller, G. (2004). Phylogenetic position of the parasitoid nanoflagellate pirsonia inferred from nuclear-encoded small subunit ribosomal DNA and a description of Pseudopirsonia n. gen. and Pseudopirsonia mucosa (Drebes) comb. nov. Protist, 155(2), 143-156.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-DAD5-1
Zusammenfassung
Sequences of the nuclear encoded small subunit (SSU) rRNA were determined for Pirsonia diadema, P. guinardiae, P. punctigerae, P. verrucosa, P. mucosa and three newly isolated strains 99-1, 99-2, 99-S. Based on phylogenetic analysis all Pirsonia strains, except P. mucosa, clustered together in one clade, most closely related to Hyphochytrium catenoides within the group of stramenopiles. However, P mucosa was most closely related to Cercomonas sp. SIC 7235 and Heteromita globosa and belongs to the heterogenic group of Cercozoa. In addition to the SSU rDNA sequences, P. mucosa differs from the stramenopile Pirsonia species in some characteristics and was therefore redescribed in this paper as Pseudopirsonia mucosa. The three newly isolated strains 99-1, 99-2, and 99-S differed by 28 bp in their SSU rDNA sequences from their closest neighbour P. diadema and only 1 to 3 bp among themselves. These base differences and a host range similar to P. formosa were sufficient to assign them as new strains of P. formosa.