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Int J Syst Evol Microbiol. 2013 Oct;63(Pt 10):3835-40. doi: 10.1099/ijs.0.050807-0. Epub 2013 May 17.

Roseovarius lutimaris sp. nov., isolated from a marine tidal flat.

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  • 1School of Biological Sciences and Research Center for Biomolecules and Biosystems, Chung-Ang University, Seoul 156-756, Republic of Korea.


A novel Gram-staining-negative, moderately halophilic and strictly aerobic bacterium, designated strain 112(T), was isolated from a tidal flat at Taean, Korea. Cells were catalase- and oxidase-positive ovoids to rods and did not produce bacteriochlorophyll a. Optimum growth of strain 112(T) was observed at 30 °C, at pH 6.5-7.5 and in the presence of 2-4 % (w/v) NaCl. The major cellular fatty acids were summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c) and C16 : 0 and Q-10 was detected as the predominant ubiquinone. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine, an unidentified aminolipid and three unidentified lipids. The genomic DNA G+C content of strain 112(T) was 58.2 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain 112(T) formed a phyletic lineage within the genus Roseovarius of the class Alphaproteobacteria. Strain 112(T) was most closely related to Roseovarius mucosus DFL-24(T), with 96.52 % similarity. On the basis of phenotypic, chemotaxonomic and molecular properties, strain 112(T) represents a novel species of the genus Roseovarius, for which the name Roseovarius lutimaris sp. nov. is proposed. The type strain is 112(T) ( = KACC 16185(T) = JCM 17743(T)).

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