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Phylogeny of anaerobic rumen Chytridiomycetes inferred from small subunit ribosomal RNA sequence comparisons

Publication: Canadian Journal of Botany
September 1991

Abstract

The 18S-like rRNA sequences of four recently isolated strains of rumen anaerobic phycomycetes (Neocallimastix frontalis MCH3, Piromonas communis FL, Sphaeromonas communis FG, and Neocallimastix joyonii NJ1) were analyzed and compared to examine the phylogenetic relatedness of the four isolates to each other and to other eukaryotes. The rumen chytrids characterized demonstrated very high 18S-like rRNA sequence similarities (97–99%). They are more closely related to the true fungi than to any other eukaryotes. Key words: phylogeny, anaerobic fungi, rumen, chytrids, Chytridiomycetes, Neocallimastix.

Résumé

Les séquences d'ARN ribosomal de type 18S de quatres souches de phycomycetes anaérobies du rumen récemment isolées (Neocallimastix frontalis MCH3, Piromonas communis FL, Sphaeromonas communis FG, and Neocallimastix joyonii NJ1) ont été analysées et comparées afin d'examiner les relations phylogénétiques entres ces quatres souches et avec d'autres eukaryotes. Les chytrides du rumen que nous avons caracterisés possèdent un niveau très élevé de similarité de séquences d'ARNr 18S (97–99%). Ils sont plus proches d'un point de vue évolutif des champignons vrais que des autres eukaryotes. Mots clés : phylogénie, champignons anaérobies, rumen, chytrides, Chytridiomycètes, Neocallimastix.

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cover image Canadian Journal of Botany
Canadian Journal of Botany
Volume 69Number 9September 1991
Pages: 1964 - 1971

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Version of record online: 1 February 2011

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