Clostridium fessum sp. nov., isolated from human faeces.
Int J Syst Evol Microbiol
; 71(1)2021 Jan.
Article
en En
| MEDLINE
| ID: mdl-33253079
An obligately anaerobic, Gram-stain-positive and spore-forming strain, SNUG30386T was isolated from a faecal sample of a healthy Korean subject. The strain formed a round ivory-coloured colony and cells were chained rods with tapered ends, approximately 2.0-2.5×0.6-0.8 µm in size. The taxonomic analysis indicated that strain SNUG30386T was within the family Lachnospiraceae. According to the 16S rRNA gene sequence similarity, the closest species to strain SNUG30386T was Clostridium symbiosum (95.6â%), followed by Enterocloster asparagiformis (94.8â%), Enterocloster clostridioformis (94.8â%) and Enterocloster lavalensis (94.6â%). The evolutionary tree based on 16S rRNA gene sequences demonstrated that strain SNUG30386T had split apart at a unique branch point far from other close relatives. Its DNA G+C content was 48.3âmol% calculated from the whole genome sequence. The major cellular fatty acids were C16â:â0 and C14â:â0. Compared to those of the closely related species, strain SNUG30386T showed distinct biochemical activities such as being unable to utilize most of carbon sources except d-glucose and l-arabinose. As a result, based on its unique phylogenetic clade and taxonomic characteristics, we conclude that strain SNUG30386T represents a novel species within the genus Clostridium, for which the name Clostridium fessum sp. nov. is proposed. The type strain of the novel species is SNUG30386T (=KCTC 15633T= JCM 32258T).
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Filogenia
/
Clostridium
/
Heces
Límite:
Humans
País/Región como asunto:
Asia
Idioma:
En
Revista:
Int J Syst Evol Microbiol
Asunto de la revista:
MICROBIOLOGIA
Año:
2021
Tipo del documento:
Article
País de afiliación:
Alemania
Pais de publicación:
Reino Unido