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Enterorhabdus caecimuris sp. nov., a member of the family Coriobacteriaceae isolated from a mouse model of spontaneous colitis, and emended description of the genus Enterorhabdus Clavel et al. 2009.

ABSTRACT: The C3H/HeJBir mouse model of intestinal inflammation was used for isolation of a Gram-positive, rod-shaped, non-spore-forming bacterium (B7(T)) from caecal suspensions. On the basis of partial 16S rRNA gene sequence analysis, strain B7(T) was a member of the class Actinobacteria, family Coriobacteriaceae, and was related closely to Enterorhabdus mucosicola Mt1B8(T) (97.6 %). The major fatty acid of strain B7(T) was C(16 : 0) (19.1 %) and the respiratory quinones were mono- and dimethylated. Cells were aerotolerant, but grew only under anoxic conditions. Strain B7(T) did not convert the isoflavone daidzein and was resistant to cefotaxime. The results of DNA-DNA hybridization experiments and additional physiological and biochemical tests allowed the genotypic and phenotypic differentiation of strain B7(T) from the type strain of E. mucosicola. Therefore, strain B7(T) represents a novel species, for which the name Enterorhabdus caecimuris sp. nov. is proposed. The type strain is B7(T) (=DSM 21839(T) =CCUG 56815(T)).

SUBMITTER: Clavel T

PROVIDER: S-EPMC3052451 | biostudies-literature | 2010 Jul

REPOSITORIES: biostudies-literature

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Enterorhabdus caecimuris sp. nov., a member of the family Coriobacteriaceae isolated from a mouse model of spontaneous colitis, and emended description of the genus Enterorhabdus Clavel et al. 2009.

Clavel Thomas T Duck Wayne W Charrier Cédric C Wenning Mareike M Elson Charles C Haller Dirk D

International journal of systematic and evolutionary microbiology 20090814 Pt 7

The C3H/HeJBir mouse model of intestinal inflammation was used for isolation of a Gram-positive, rod-shaped, non-spore-forming bacterium (B7(T)) from caecal suspensions. On the basis of partial 16S rRNA gene sequence analysis, strain B7(T) was a member of the class Actinobacteria, family Coriobacteriaceae, and was related closely to Enterorhabdus mucosicola Mt1B8(T) (97.6 %). The major fatty acid of strain B7(T) was C(16 : 0) (19.1 %) and the respiratory quinones were mono- and dimethylated. Cel ...[more]

PMID: 19684311

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Project description:A comparative taxonomic study of Halorubrum distributum, Halorubrum terrestre, Halorubrum arcis and Halorubrum litoreum was carried out using different approaches, 16S rRNA gene sequence analysis, multilocus sequence analysis (MLSA), phylogenomic analysis based on the comparison of the core genome, orthologous average nucleotide identity (OrthoANI), Genome-to-Genome Distance Calculator (GGDC), synteny plots and polar lipid profile (PLP). The MLSA study, using the five concatenated housekeeping genes atpB, EF-2, glnA, ppsA and rpoB', and the phylogenomic analysis based on 1347 core translated gene sequences obtained from their genomes showed that Halorubrum distributum JCM 9100T, Halorubrum terrestre JCM 10247T, Halorubrum arcis JCM 13916T and Halorubrum litoreum JCM 13561T formed a robust cluster, clearly separated from the rest of species of the genus Halorubrum. The OrthoANI and digital DDH values, calculated by the GGDC, showed percentages among Hrr. distributum JCM 9100T, Hrr. terrestre JCM 10247T, Hrr. arcis JCM 13916T and Hrr. litoreum JCM 13561T that ranged from 98.1 to 97.5?%, and 84.0 to 78.0?%, respectively, while these values among those strains and the type strains of their most related species of Halorubrum were equal or lower than 90.8 and 41.2 %, respectively. Moreover, degree of synteny across the four genomes was very high, especially between the genomes of Halorubrum litoreum JCM 13561T and Halorubrum arcis JCM 13916T. In addition, the PLP is quite similar among the four strains studied, showing a common pattern typical of the neutrophilic species of the genus Halorubrum. Overall, these data show that Hrr. distributum, Hrr. terrestre, Hrr. arcis and Hrr. litoreum constitute a single species. Thus, the latter three should be considered as later, heterotypic synonyms of Hrr. distributum based on the rules for priority of names. We propose an emended description of Hrr. distributum, including the features of Hrr. terrestre, Hrr. arcis and Hrr. litoreum.

Dataset Information

Enterorhabdus caecimuris sp. nov., a member of the family Coriobacteriaceae isolated from a mouse model of spontaneous colitis, and emended description of the genus Enterorhabdus Clavel et al. 2009.

Publications

Enterorhabdus caecimuris sp. nov., a member of the family Coriobacteriaceae isolated from a mouse model of spontaneous colitis, and emended description of the genus Enterorhabdus Clavel et al. 2009.

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