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Bacteroides coprophilus sp. nov., isolated from human faeces

Hidenori Hayashi^1,, Kensaku Shibata^1,2, Mohammad Abdul Bakir¹, Mitsuo Sakamoto¹, Shinichi Tomita² and Yoshimi Benno¹

¹ Microbe Division/Japan Collection of Microorganisms, RIKEN BioResource Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
² Department of Life Science, Faculty of Agriculture, Tamagawa University, 6-1-1 Tamagawa-Gakuen, Machida, Tokyo 194-8610, Japan

Correspondence
Hidenori Hayashi
h-hayashi{at}maebashi-it.ac.jp

Three Gram-negative, anaerobic, rod-shaped bacteria (strains CB40, CB41 and CB42^T) were isolated from human faeces. Based on phylogenetic analysis and specific phenotypic characteristics, these strains were included in the genus Bacteroides, and 16S rRNA gene sequence analysis indicated that these strains represented a novel species. The strains were most closely related to the type strains of Bacteroides barnesiae and Bacteroides salanitronis, with sequence similarities of 93.4 and 89.8 %, respectively. The G+C content of strain CB42^T is 44.7 mol%. Major fatty acids were anteiso-C_{15 : 0}, C_{16 : 0}, iso-C_{17 : 0} 3-OH and C_{18 : 1}9c. On the basis of the data presented, a novel Bacteroides species, Bacteroides coprophilus sp. nov., is proposed, with CB42^T (=JCM 13818^T=DSM 18228^T) as the type strain.

Tables detailing API 20A and Rapid ID 32A test results and the cellular fatty acid composition of strains of B. coprophilus sp. nov. and related species are available as supplementary material with the online version of this paper.

Present address: Faculty of Engineering, Maebashi Institute of Technology, 460-1 Kamisatori, Maebashi, Gunma 371-0816, Japan.

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