Clostridium composti sp. nov., a new anaerobic bacteria isolated from compost

Abstract

Strain YH-tan31T is a Gram-stain-positive, obligately anaerobic, spore-forming and mesophilic bacterium. The cells are rod-shaped and motile by means of peritrichous flagella. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the isolate belongs to the genus Clostridium and is most closely related to Clostridium oryzae DSM 28571T (97% sequence identity), followed by Clostridium cellulovorans DSM 3052T (92.4%) and Clostridium butyricum KCTC 5387T (92.1%). The G+C content of the isolate was 30.9 mol%. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The predominant fatty acids were C14:0, C16:0, C16:0 DMA,and C19:0cis 11,12 DMA. The major end products of glucose fermentation were butyrate, acetate and lactate. This isolate represents a new species within the genus Clostridium, for which we propose the name Clostridiumcomposti sp. nov. (type strain, YH-tan31T; =KCTC 15630T=JCM 32793T).