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Taxonomy Citation ID Reference
55284 Notification of changes in taxonomic opinion previously published outside the IJSEM. Int. J. Syst. Evol. Microbiol. (2017) 67:2081-2086.
12276 Derrien  M, Vaughan  EE, Plugge  CM, de Vos  WM,     ( 2004 )

Akkermansia muciniphila gen. nov., sp. nov., a human intestinal mucin-degrading bacterium.

International journal of systematic and evolutionary microbiology 54 (Pt 5)
PMID : 15388697 DOI  :   10.1099/ijs.0.02873-0    
Abstract >>
The diversity of mucin-degrading bacteria in the human intestine was investigated by combining culture and 16S rRNA-dependent approaches. A dominant bacterium, strain MucT, was isolated by dilution to extinction of faeces in anaerobic medium containing gastric mucin as the sole carbon and nitrogen source. A pure culture was obtained using the anaerobic soft agar technique. Strain MucT was a Gram-negative, strictly anaerobic, non-motile, non-spore-forming, oval-shaped bacterium that could grow singly and in pairs. When grown on mucin medium, cells produced a capsule and were found to aggregate. Strain MucT could grow on a limited number of sugars, including N-acetylglucosamine, N-acetylgalactosamine and glucose, but only when a protein source was provided and with a lower growth rate and final density than on mucin. The G + C content of DNA from strain MucT was 47.6 mol%. 16S rRNA gene sequence analysis revealed that the isolate was part of the division Verrucomicrobia. The closest described relative of strain MucT was Verrucomicrobium spinosum (92 % sequence similarity). Remarkably, the 16S rRNA gene sequence of strain MucT showed 99 % similarity to three uncultured colonic bacteria. According to the data obtained in this work, strain MucT represents a novel bacterium belonging to a new genus in subdivision 1 of the Verrucomicrobia; the name Akkermansia muciniphila gen. nov., sp. nov. is proposed; the type strain is MucT (= ATCC BAA-835T = CIP 107961T).
KeywordMeSH Terms
48660 Hahnke  RL, Meier-Kolthoff  JP, García-López  M, Mukherjee  S, Huntemann  M, Ivanova  NN, Woyke  T, Kyrpides  NC, Klenk  HP, Göker  M,     ( 2016 )

Genome-Based Taxonomic Classification of Bacteroidetes.

Frontiers in microbiology 7 (N/A)
PMID : 28066339 DOI  :   10.3389/fmicb.2016.02003     PMC  :   PMC5167729    
Abstract >>
The bacterial phylum Bacteroidetes, characterized by a distinct gliding motility, occurs in a broad variety of ecosystems, habitats, life styles, and physiologies. Accordingly, taxonomic classification of the phylum, based on a limited number of features, proved difficult and controversial in the past, for example, when decisions were based on unresolved phylogenetic trees of the 16S rRNA gene sequence. Here we use a large collection of type-strain genomes from Bacteroidetes and closely related phyla for assessing their taxonomy based on the principles of phylogenetic classification and trees inferred from genome-scale data. No significant conflict between 16S rRNA gene and whole-genome phylogenetic analysis is found, whereas many but not all of the involved taxa are supported as monophyletic groups, particularly in the genome-scale trees. Phenotypic and phylogenomic features support the separation of Balneolaceae as new phylum Balneolaeota from Rhodothermaeota and of Saprospiraceae as new class Saprospiria from Chitinophagia. Epilithonimonas is nested within the older genus Chryseobacterium and without significant phenotypic differences; thus merging the two genera is proposed. Similarly, Vitellibacter is proposed to be included in Aequorivita. Flexibacter is confirmed as being heterogeneous and dissected, yielding six distinct genera. Hallella seregens is a later heterotypic synonym of Prevotella dentalis. Compared to values directly calculated from genome sequences, the G+C content mentioned in many species descriptions is too imprecise; moreover, corrected G+C content values have a significantly better fit to the phylogeny. Corresponding emendations of species descriptions are provided where necessary. Whereas most observed conflict with the current classification of Bacteroidetes is already visible in 16S rRNA gene trees, as expected whole-genome phylogenies are much better resolved.
KeywordMeSH Terms
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification
Bacteroidaeota-Rhodothermaeota-Balneolaeota-Chlorobaeota superphylum
G+C content
genome BLAST distance phylogeny
gliding motility
gut microbiome
marine microbiology
one thousand microbial genomes project
phylogenetic classification

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