1887

Abstract

In a previous study on bifidobacterial distribution in New World monkeys, six strains belonging to the were isolated from faecal samples of baby common marmosets ( L.). All the isolates were Gram-positive-staining, anaerobic, asporogenous and fructose-6-phosphate phosphoketolase-positive. Comparative analysis of 16S rRNA gene sequences revealed relatively low levels of similarity (maximum identity 96 %) to members of the genus , and placed the isolates in three independent clusters: strains of cluster I (MRM_5.9 and MRM_5.10) and cluster III (MRM_5.18 and MRM_9.02) respectively showed 96.4 and 96.7 % 16S rRNA gene sequence similarity to DSM 23973, while strains of cluster II (MRM_8.14 and MRM_9.14) showed 95.4 % similarity to DSM 23968. Phylogenetic analysis of partial and gene sequences supported an independent phylogenetic position of each cluster from each other and from the related type strains DSM 23973 and DSM 23968. Clusters I, II and III respectively showed DNA G+C contents of 64.9–65.1, 56.4–56.7 and 63.1–63.7 mol%. The major cellular fatty acids of MRM_5.9 were C, C and Cω9 dimethylacetal, while C was prominent in strains MRM_5.18 and MRM_8.14, followed by Cω9 and C. Biochemical profiles and growth parameters were recorded for all the isolates. Based on the data provided, the clusters represent three novel species, for which the names sp. nov. (type strain MRM_5.9 = DSM 100196 = JCM 30796), sp. nov. (type strain MRM_8.14 = DSM 100202 = JCM 30799) and sp. nov. (type strain MRM_5.18 = DSM 100201 = JCM 30798) are proposed.

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2016-01-01
2024-12-03
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