Reclassification of Actinobacillus muris as Muribacter muris gen. nov. comb. nov.

Nicklas, Werner; Bisgaard, Magne; Aalbæk, Bent; Kuhnert, Peter; Christensen, Henrik (2015). Reclassification of Actinobacillus muris as Muribacter muris gen. nov. comb. nov. International journal of systematic and evolutionary microbiology, 65(10), pp. 3344-3351. Society for General Microbiology SGM 10.1099/ijsem.0.000417

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To reinvestigate the taxonomy of [Actinobacillus] muris, 474 strains mainly from mice and rats were characterized by phenotype and 130 strains selected for genotypic characterization by 16S rRNA and partial rpoB gene sequencing. The type strain was further investigated by whole genome sequencing. Phylogenetic analysis of the DNA sequences showed one monophyletic group with intra group similarities of 96.7 % and 97.2 % for 16S rRNA and rpoB genes, respectively. The lowest 16S rRNA similarity to the closest related valid named taxon outside the group was 95.9 % to the type strain of [Pasteurella] pneumotropica. The closest related taxon based on rpoB sequence comparison was 'Haemophilus influenzae-murium' with 88.4 %. A new genus, Muribacter is proposed based on a distinct phylogenetic position based on 16S rRNA and rpoB gene sequence comparisons with major divergence to the existing genera of Pasteurellaceae. The new genus includes the characteristics of [Actinobacillus] muris with the emendation that acid formation from (-)-D-mannitol is variable as well the hydrolysis of esculin while the α-glucosidase test is positive. There is no requirement for exogenously supplied nicotinamide adenine dinucleotide (V factor) for the majority of strains investigated, however, one strain was found positive. The major fatty acids of the type strain of Muribacter muris were C 14:0, C 14:0 3OH/C 16:1 ISOI, C 16:1 ω7c and C 16:0 which is in line with most genera of Pasteurellaceae. The type strain of Muribacter muris is CCUG 16938T ( = NCTC 12432T = ATCC 49577T).

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Research Foci > Host-Pathogen Interaction
05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP)
05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Institute of Veterinary Bacteriology

UniBE Contributor:

Kuhnert, Peter

Subjects:

500 Science > 570 Life sciences; biology
600 Technology > 630 Agriculture

ISSN:

1466-5026

Publisher:

Society for General Microbiology SGM

Language:

English

Submitter:

Peter Kuhnert-Ryser

Date Deposited:

17 Sep 2015 10:53

Last Modified:

02 Jul 2016 02:30

Publisher DOI:

10.1099/ijsem.0.000417

PubMed ID:

26296776

BORIS DOI:

10.7892/boris.71677

URI:

https://boris.unibe.ch/id/eprint/71677

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