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Int J Syst Evol Microbiol 59 (2009), 790-794; DOI  10.1099/ijs.0.65759-0
© 2009 International Union of Microbiological Societies

Paracoccus aestuarii sp. nov., isolated from tidal flat sediment

Seong Woon Roh1,2, Young-Do Nam1,2, Ho-Won Chang1,2, Kyoung-Ho Kim1,2, Min-Soo Kim1,2, Kee-Sun Shin2, Jung-Hoon Yoon2, Hee-Mock Oh2 and Jin-Woo Bae1,2

1 Department of Biology, Kyung Hee University, Seoul 130-701, Republic of Korea
2 University of Science & Technology, Biological Resources Center, KRIBB, Daejeon 305-806, Republic of Korea

Correspondence
Jin-Woo Bae
baejw{at}kribb.re.kr

A Gram-negative micro-organism, designated strain B7T, was isolated from tidal flat sediment and subjected to a polyphasic taxonomic study involving morphological, physiological, biochemical and 16S rRNA gene sequence analyses. A phylogenetic analysis based on the 16S rRNA gene sequence indicated that strain B7T belonged to the genus Paracoccus and was closely related phylogenetically to Paracoccus marcusii MH1T (97.5 % sequence similarity), Paracoccus marinus KKL-A5T (97.5 %), Paracoccus haeundaensis BC74171T (97.3 %), Paracoccus carotinifaciens E-396T (97.3 %), Paracoccus homiensis DD-R11T (97.2 %), Paracoccus seriniphilus MBT-A4T (96.9 %) and other type strains of the genus Paracoccus (95.2–96.7 %). The G+C content of the genomic DNA and the major isoprenoid quinone of the type strain were 62.0 mol% and ubiquinone-10, respectively. The major fatty acid components were C18 : 1{omega}7c (68.9 %) and C18 : 0 (18.1 %); this profile, with C18 : 1{omega}7c as the predominant fatty acid, was characteristic of members of the genus Paracoccus. The 16S rRNA gene sequence analysis, DNA–DNA hybridization studies and physiological and biochemical tests identified genotypic and phenotypic differences between strain B7T and recognized Paracoccus species. On the basis of these data, therefore, strain B7T represents a novel species of the genus Paracoccus, for which the name Paracoccus aestuarii sp. nov. is proposed. The type strain is B7T (=KCTC 22049T=DSM 19484T=JCM 15119T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain B7T is EF660757.






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