Clostridium tanneri sp. nov., isolated from the faecal material of an alpaca

A strictly anaerobic, Gram-stain-negative rod-shaped bacterium, designated A1-XYC3 T , was isolated from the faeces of an alpaca ( Lama pacos ). On the basis of the results of a comparative 16S rRNA gene sequence analysis, the isolate was assigned to the genus Clostridium with the highest sequence similarities to Clostridium magnum DSM 2767 T (96.8 %), Clostridium carboxidivorans P7 T (96.3 %) and Clostridium aciditolerans JW/YJL-B3 T (96.1 %). The average nucleotide identity between A1-XYC3 T , C. magnum, C. carboxidivorans and C . aciditolerans was 77.4, 76.1 and 76.6 %, respectively. The predominant components of the cellular fatty acids of A1-XYC3 T were C 14 : 0 , C 16 : 0 and summed feature 10, containing C 18:0 /C 17:0 cyclo. The DNA G+C content was 32.4 mol%. On the basis of biochemical, phylogenetic, genotypic and chemotaxonomic criteria, this isolate represents a novel species within Clostridium sensu stricto for which the name Clostridium tanneri sp. nov. is proposed. The type strain of this species is strain A1-XYC3 T (=CCM 9376 T =NRRL B-65691 T ).