Phylogenetic analysis of archaeal 16S rRNA libraries from the rumen suggests the existence of a novel group of archaea not associated with known methanogens

Abstract Molecular diversity of rumen archaea was analyzed by PCR amplification and sequencing of two 16S rRNA clone libraries prepared from the bovine rumen fluid using two different archaea-specific primer sets. The first library of 19 clones which was generated with primers D30 and D33, produced...

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Veröffentlicht in:FEMS microbiology letters 2001-06, Vol.200 (1), p.67-72
Hauptverfasser: Tajima, Kiyoshi, Nagamine, Takafumi, Matsui, Hiroki, Nakamura, Mutsumi, Aminov, Rustam I.
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container_issue 1
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creator Tajima, Kiyoshi
Nagamine, Takafumi
Matsui, Hiroki
Nakamura, Mutsumi
Aminov, Rustam I.
description Abstract Molecular diversity of rumen archaea was analyzed by PCR amplification and sequencing of two 16S rRNA clone libraries prepared from the bovine rumen fluid using two different archaea-specific primer sets. The first library of 19 clones which was generated with primers D30 and D33, produced essentially two groups of sequences, one affiliated with Methanomicrobium mobile (21% of clones) and the other – with the uncultured archaeal sequences from anaerobic digester, which are distantly associated with Thermoplasma (79% of clones). The second library of 25 clones, which was generated with primers 0025e Forward and 1492 Reverse, produced a higher degree of diversity: in addition to the previous two groups, with the M. mobile- (56%) and Thermoplasma-associated sequences (20%), four clones (16%) were identified as Methanobrevibacter spp. The remaining two sequences were associated with unidentified archaeal sequences from the rumen and swine waste. Phylogenetic placement of eight almost complete 16S rRNA sequences revealed the existence of a novel cluster of the rumen Euryarchaeota, which is not affiliated with the known methanogenic archaea.
doi_str_mv 10.1111/j.1574-6968.2001.tb10694.x
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The first library of 19 clones which was generated with primers D30 and D33, produced essentially two groups of sequences, one affiliated with Methanomicrobium mobile (21% of clones) and the other – with the uncultured archaeal sequences from anaerobic digester, which are distantly associated with Thermoplasma (79% of clones). The second library of 25 clones, which was generated with primers 0025e Forward and 1492 Reverse, produced a higher degree of diversity: in addition to the previous two groups, with the M. mobile- (56%) and Thermoplasma-associated sequences (20%), four clones (16%) were identified as Methanobrevibacter spp. The remaining two sequences were associated with unidentified archaeal sequences from the rumen and swine waste. Phylogenetic placement of eight almost complete 16S rRNA sequences revealed the existence of a novel cluster of the rumen Euryarchaeota, which is not affiliated with the known methanogenic archaea.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><pmid>11410351</pmid><doi>10.1111/j.1574-6968.2001.tb10694.x</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record>
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source Oxford University Press Journals All Titles (1996-Current); MEDLINE; Wiley Online Library Journals Frontfile Complete; Alma/SFX Local Collection
subjects Animals
Archaea
Archaea - classification
Archaea - genetics
Archaea - isolation & purification
Bacteria - genetics
Bacteriology
Biological and medical sciences
Cattle
Eukaryotic Cells
Euryarchaeota
Euryarchaeota - classification
Euryarchaeota - genetics
Evolution, Molecular
Fundamental and applied biological sciences. Psychology
Gene Library
Genetics
Methanogenic archaea
Methanogenic bacteria
Methanomicrobium mobile
Microbiology
Molecular diversity
Molecular Sequence Data
Nucleic Acid Conformation
Phylogenetics
Phylogeny
RNA, Archaeal - genetics
RNA, Ribosomal, 16S - genetics
rRNA 16S
Rumen
Rumen - microbiology
Sequence Analysis, DNA
Swine
Systematics
Thermoplasma
title Phylogenetic analysis of archaeal 16S rRNA libraries from the rumen suggests the existence of a novel group of archaea not associated with known methanogens
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