Faecalibacter macacae gen. nov., sp. nov., isolated from the faeces of Macaca assamensis

Huge numbers of bacteria reside in the digestive tract of most animals. During an investigation into the bacterial diversity of primates, strain YIM 102668(T) was isolated. When neighbour-joining phylogenetic analysis based on 16S rRNA gene sequences was conducted, strain YIM 102668(T) formed a cluster within the family Flavobacteriaceae and in a lineage not associated with any known group of previously proposed genera. Closely related genera were Algoriella (94.8%), Chishuiefla (94.8%), Empedobacter (highest 94.6%), Moheibacter (90.9%) and Weeksella (90.6%). In addition, strain YIM 102668(T) contained MK-6 as the predominant respiratory quinone and iso-C(15:0 )as the major fatty acid. The major polar lipid was phosphatidylethanolamine and the genomic DNA G+C content was 30.6 mol%. These chemotaxonomic characterizations confirmed that strain YIM 102668(T) belonged to the family Flavobacteriaceae. Supported by the results of phylogenetic, phenotypic and chemotaxonomic analyses, we propose that strain YIM 102668(T) represents a novel genus, for which the name Faecalibacter macacae gen. nov., sp. nov. is proposed. The type strain is YIM 102668(T) (=KCTC 52109(T) =CCTCC AB 2016016(T)).