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Int J Syst Evol Microbiol 58 (2008), 2118-2121; DOI  10.1099/ijs.0.65817-0
© 2008 International Union of Microbiological Societies

Tranquillimonas alkanivorans gen. nov., sp. nov., an alkane-degrading bacterium isolated from Semarang Port in Indonesia

Theresia Umi Harwati1,2, Yuki Kasai1, Yumiko Kodama1, Dwi Susilaningsih2 and Kazuya Watanabe1

1 Marine Biotechnology Institute, 3-75-1 Heita, Kamaishi, Iwate 026-0001, Japan
2 Research Centre for Biotechnology, Indonesia Institute of Sciences (LIPI), Cibinong 11691, Indonesia

Correspondence
Yuki Kasai
yuki.kasai{at}mbio.jp

Strain A34T, an obligately halophilic, Gram-negative, non-motile, rod-shaped bacterium, was isolated from seawater obtained from Semarang Port in Indonesia. It possesses a pink pigment and degrades short-chain alkanes. It is positive for catalase and oxidase and reduces nitrate to nitrite. Analyses of 16S rRNA gene sequences revealed a clear affiliation of this strain with the family ‘Rhodobacteraceae’ in the class Alphaproteobacteria, with its closest relatives being Salipiger mucosus A3T (94.9 % sequence similarity) and Palleronia marisminoris B33T (93.4 %). The DNA G+C content was 69.1 mol%. The major cellular fatty acids of strain A34T were C18 : 1{omega}7c (56.2 %), C19 : 0 cyclo {omega}8c (26.0 %) and C16 : 0 (9.1 %), while the predominant respiratory lipoquinone was ubiquinone-10. Based on the physiological and phylogenetic data, it is proposed that strain A34T should be classified in a new genus and species, for which the name Tranquillimonas alkanivorans gen. nov., sp. nov. is proposed. The type strain of Tranquillimonas alkanivorans is strain A34T (=JCM 14836T =DSM 19547T).

Abbreviations: PHA, poly-β-hydroxyalkanoate

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain A34T is AB302386.






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Copyright © 2008 by the International Union of Microbiological Societies.