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Int J Syst Evol Microbiol 57 (2007), 2902-2907; DOI  10.1099/ijs.0.64844-0
© 2007 International Union of Microbiological Societies

Cohnella laeviribosi sp. nov., isolated from a volcanic pond

Eun-Ah Cho1, Jung-Sook Lee2, Keun Chul Lee2, Heung-Chae Jung3,4, Jae-Gu Pan3,4 and Yu-Ryang Pyun1

1 Department of Biotechnology, Yonsei University, Seoul 120-749, Republic of Korea
2 Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, 52 Eoeun-dong, Yusong-gu, Daejeon 305-806, Republic of Korea
3 GenoFocus Inc., Yusong, Daejeon 305-811, Republic of Korea
4 Systems Microbiology Research Center, Korea Research Institute of Bioscience and Biotechnology, 52 Eoeun-dong, Yusong-gu, Daejeon 305-806, Republic of Korea

Correspondence
Yu-Ryang Pyun
yrpyun{at}yonsei.ac.kr

A novel thermophilic and endospore-forming Gram-positive bacterium capable of assimilating and isomerizing L-ribose was isolated from a volcanic area in Likupang, Indonesia. The isolate, RI-39T, was able to grow at high temperatures (37–60 °C); optimum growth was observed at pH 6.5 and 45 °C. The strain contained MK-7 (87 %) as the main respiratory quinone and had a DNA G+C content of 51 mol%. The major cellular fatty acids of the isolate were iso-C16 : 0 and anteiso-C15 : 0 and the predominant polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and lysyl-phosphatidylglycerol. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the isolate represents an evolutionary lineage that is distinct from those of other Cohnella species. Based on morphological, physiological and chemotaxonomic characteristics and 16S rRNA gene sequence comparisons, it is proposed that strain RI-39T represents a novel species, Cohnella laeviribosi sp. nov. The type strain is RI-39T (=KCTC 3987T =KCCM 10653PT =CCUG 52217T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain RI-39T is DQ459874.

An extended phylogenetic tree showing the position of isolate RI-39T compared with related taxa based on 16S rRNA gene sequences is available as supplementary material with the online version of this paper.






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