Abstract
A Gram-negative, short ovoid- to coccus-shaped, aerobic, motile, non-spore-forming bacterium (designated strain JLT1679T) was isolated from West Pacific. Cells have subpolar flagella, dividing by binary fission. Phylogenetic analyses based on 16S rRNA gene sequences showed that the strain belongs to branch of the evolutionary radiation occupied by the genus Paracoccus, family Rhodobacteraceae, order Rhodobacterales, class Alphaproteobacteria. The closest neighbours were Paracoccus stylophorae KTW-16T (97.1% similarity), Paracoccus caeni strain MJ17T (96.5% similarity), Paracoccus homiensis DD-R11T (96.0% similarity) and Paracoccus alcaliphilus JCM 7364T (95.8% similarity). The predominant cellular fatty acids of strain JLT1679T were summed feature 8 (18:1ω6c) (38.8%), C18:0 (27.7%), C16:0 (22.5%), and significant amounts of C18:1 ω9c (5.1%), C14:0 (3.8%) and C18:1 ω7c 11-methyl (2.1%), were present. The predominant respiratory ubiquinone of strain JLT1679T was Q-10 and the DNA G + C content of strain JLT1679T was 59.5 mol%. The polar lipid profile consisted of a mixture of phosphatidylglycerol, diphosphatidylglycerol, phosphatidylcholine and sphingoglycolipid. The isolate was distinguishable from members of the genus Paracoccus on the basis of phenotypic and biochemical characteristics. It is evident from the genotypic, chemotaxonomic and phenotypic data that strain JLT1679T represents a novel species of the genus Paracoccus, for which the name Paracoccus oceanense sp. nov. is proposed. The type strain is JLT1679T (= JCM 17768T = CGMCC 1.10831T).
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Acknowledgement
The authors would like to thank Professor Henglin Cui, School of Food&Biological Engineering, Jiangsu University for his valuable help. This study was supported by the NSFC projects 91028001 and 41076063; SOA project 201105021; MELRS0940.
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Sequence deposited: The GenBank accession number for the 16S rRNA gene sequence of strain JLT1679T is HQ638977.
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Fu, Y., Li, Q., Liu, K. et al. Paracoccus oceanense sp. nov., Isolated from the West Pacific. Curr Microbiol 63, 561 (2011). https://doi.org/10.1007/s00284-011-0015-1
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DOI: https://doi.org/10.1007/s00284-011-0015-1