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Planococcus maritimus sp. nov., isolated from sea water of a tidal flat in Korea

¹ Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Korea
² DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen, Mascheroder Weg 1b, D-38124 Braunschweig, Germany
³ Department of Food and Life Science, Sungkyunkwan University, Chunchun-dong 300, Jangan-gu, Suwon, Korea
⁴ National Research Laboratory of Molecular Ecosystematics, Institute of Probionic, Probionic Corporation, Bio-venture Centre, KRIBB, PO Box 115, Yusong, Taejon, Korea

Correspondence
Yong-Ha Park
yhpark{at}kribb.re.kr

Two Gram-positive, motile cocci, strains TF-9^T and TF-16, were isolated from sea water of a tidal flat in Korea. Phylogenetic analysis based on 16S rDNA sequences showed that the strains fall within the radiation of the cluster comprising Planococcus citreus and Planococcus kocurii, and this cluster joined the clade comprising Planomicrobium species and Planococcus alkanoclasticus and Planococcus psychrophilus with a high bootstrap resampling value. Strains TF-9^T and TF-16 contained MK-8, MK-7 and MK-6 as the predominant menaquinones. The major fatty acid was anteiso-C_{15 : 0}. The DNA G+C contents of strains TF-9^T and TF-16 were respectively 48 and 49 mol%. The level of 16S rDNA identity between strains TF-9^T and TF-16 was 98·9 %. Strain TF-9^T and TF-16 respectively exhibited levels of 16S rDNA identity of 97·2–98·4 and 96·9–99·5 % to the type strains of Planococcus kocurii, Planococcus citreus and Planococcus antarcticus. The mean level of DNA–DNA relatedness between strains TF-9^T and TF-16 was 36·7 %. Strains TF-9^T and TF-16 respectively exhibited levels of DNA–DNA relatedness of 7·1–43·4 and 3·5–80·9 % to Planococcus citreus DSM 20549^T, Planococcus kocurii DSM 20747^T and Planococcus antarcticus DSM 14505^T. On the basis of the phenotypic, phylogenetic and genomic data, strain TF-9^T (=KCCM 41587^T=JCM 11543^T) should be placed as a novel species of the genus Planococcus, for which the name Planococcus maritimus sp. nov. is proposed, and strain TF-16 should be classified as a member of Planococcus citreus.

Published online ahead of print on 1 August 2003 as DOI 10.1099/ijs.0.02557-0.

The GenBank accession numbers for the 16S rDNA sequences of strains TF-9^T and TF-16 are respectively AF500007 and AF500008 and for the 16S–23S rDNA ITS sequences of strains TF-9^T and TF-16 they are AF500009 and AF500010.

Detailed results of DNA–DNA relatedness experiments are available as supplementary material in IJSEM Online.

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