Faecalibacter bovis sp. nov., isolated from cow faeces

A Gram-stain-negative, non-spore-forming, yellow-pigmented, aerobic, pleomorphic rod-shaped bacterium, designated ZY171143(T), was isolated from faeces of a cow with diarrhoea in Wenshan, Yunnan Province, south -west China and its taxonomic position was studied. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain ZY171143(T) belonged to the family Weeksellaceae and was most closely related to the only species of the genus Faecalibacter, Faecalibacter macacae CCTCC AB 2016016(T) with a sequence similarity of 97.8 %. The genomic OrthoANI and digital DNA-DNA hybridization values between the strain and F. macacae CCTCC AB 2016016(T) were 86.2 and 30.5 %, respectively. The genomic G+C content was 31.1 mol%. The predominant fatty acids (>5 %) were C15: 0 iso, C-17:0 iso 3OH, C-16:0, C-16:1 omega 5c and summed feature 3 (C-16:1 omega 7c and/or 16:1 omega 6c). The major polar lipids were phosphatidylethanolamine, triacylglycerol and sulfonolipid. The sole respiratory quinone was MK -6. These chemotaxonomic characterizations also revealed that strain ZY171143(T) was a member of the genus Faecalibacter. Based on the phenotypic, chemotaxonomic and genotypic data, strain ZY171143(T) represents a novel species within the genus Faecalibacter, for which the name Faecalibacter bovis sp. nov. is proposed. The type strain is ZY171143(T) (=CGMCC 1.13663(T)=KCTC 62642(T)).

Automated summary

A novel Gram-negative, yellow-pigmented bacterium, designated Faecalibacter bovis sp. nov., was isolated from the faeces of a cow in Wenshan, Yunnan Province, southwest China. Through phenotypic, chemotaxonomic, and genotypic analysis, it was determined to belong to the genus Faecalibacter, with distinct characteristics.