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Int J Syst Evol Microbiol 59 (2009), 2094-2098; DOI  10.1099/ijs.0.007666-0
© 2009 International Union of Microbiological Societies

Paraoerskovia marina gen. nov., sp. nov., an actinobacterium isolated from marine sediment

Shams Tabrez Khan1,2, Shigeaki Harayama1, Tomohiko Tamura1, Katsuhiko Ando1, Motoki Takagi2 and Shin-ya Kazuo3

1 NITE Biological Resource Center (NBRC), National Institute of Technology and Evaluation (NITE), 2-5-8 Kazusa-kamatari, Kisarazu, Chiba 292-0818, Japan
2 Biomedicinal Information Research Center (BIRC), Japan Biological Informatics Consortium (JBIC), 2-42 Aomi, Koto-ku, Tokyo 135-0064, Japan
3 Biomedicinal Information Research Center (BIRC), National Institute of Advanced Industrial Science and Technology (AIST), 2-42 Aomi, Koto-ku, Tokyo 135-0064, Japan

Correspondence
Shams Tabrez Khan
stkhan{at}nbrc.nite.go.jp
or
shamsalig75{at}gmail.com

A Gram-positive-staining, facultatively anaerobic bacterial strain, CTT-37T, was isolated from a marine sediment sample collected from Tottori city, located on the shore of the Sea of Japan. A 16S rRNA gene sequence comparison indicated that the isolate represents a novel clade that clusters with members of the families Cellulomonadaceae and Sanguibacteraceae. Strain CTT-37T shared maximum 16S rRNA gene sequence similarity of 96.4 % with Oerskovia paurometabola DSM 14281T and 96.2 % with Oerskovia enterophila DSM 43852T. The DNA–DNA hybridization value between strain CTT-37T and O. enterophila JCM 7350T was 10–12 %. The following chemotaxonomic characteristics of strain CTT-37T were markedly different from those of strains in the genus Oerskovia. The cell wall contained L-serine in the peptidoglycan interpeptide bridge. The predominant menaquinone was MK-9 (H4); other quinones detected were MK-9 and MK-9(H2). The only polar lipid was phosphatidylglycerol and the G+C content of the DNA was 70 mol%. Differences in phenotypic characteristics and large phylogenetic distances between strain CTT-37T and all members of the genus Oerskovia supported the classification of CTT-37T within a new genus and species, for which the name Paraoerskovia marina gen. nov., sp. nov. is proposed. The type strain of Paraoerskovia marina is CTT-37T (=NBRC 104352T =DSM 21750T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain CTT-37T is AB445007.

The detailed cellular fatty acid profile of strain CTT-37T is available as supplementary material with the online version of this paper.






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