RT Journal Article SR Electronic(1) A1 Shigeno, Yuko A1 Kitahara, Maki A1 Shime, Mari A1 Benno, YoshimiYR 2019 T1 Phascolarctobacterium wakonense sp. nov., isolated from common marmoset (Callithrix jacchus) faeces JF International Journal of Systematic and Evolutionary Microbiology, VO 69 IS 7 SP 1941 OP 1946 DO https://doi.org/10.1099/ijsem.0.003407 PB Microbiology Society, SN 1466-5034, AB Two strictly anaerobic strains (MB11T and MB56) were isolated from common marmoset (Callithrixjacchus) faeces. Cells of the two strains were Gram-stain-negative, pleomorphic short (strain MB11T) or long (strain MB56) rods. Phylogenetic analysis based on 16S rRNA gene sequences revealed that both isolates were related to the genus Phascolarctobacterium . They had 16S rRNA gene sequences similarities lower than 93 % to previously described species, Phascolarctobacterium faecium ACM 3679T and Phascolarctobacterium succinatutens YIT 12067T, and 98.7 % between themselves. DNA–DNA hybridization values showed that strains MB11T and MB56 were the same species. The genomic DNA G+C content of strains MB11T and MB56 were 47.3–47.4 mol% and 47.7–48.0 mol%. The isolates had different enzymatic activities compared with P. succinatutens JCM 16074T and different major cellular fatty acids compared with P. faecium ACM 3679T. Substrate availability revealed that they utilized not only succinate, but also pyruvate. With pyruvate supplementation, they produced both propionate and acetate, while only propionate production occured with succinate. As suggested by the phylogenic and physiological properties of strains MB11T and MB56, we propose the name Phascolarctobacterium wakonense sp. nov. with the type strain MB11T (=JCM 32899T=DSM 107697T)., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijsem.0.003407