Author(s): Lee SH, Shim JK, Kim JM, Choi HK, Jeon CO
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Abstract A Gram-staining-negative, strictly aerobic bacterium, designated strain SD10(T), was isolated from a tidal flat of the Yellow Sea, South Korea. Cells were non-spore-forming rods that showed catalase- and oxidase-positive reactions. Growth of strain SD10(T) was observed at 15-40 °C (optimum, 25-30 °C), at pH 6.0-9.0 (optimum, pH 6.5-8.5) and in the presence of 1-10 \% (w/v) NaCl. Strain SD10(T) contained ubiquinone-10 (Q-10) as a major isoprenoid quinone and C(18 : 1)ω7c (39.3 \%), C(16 : 0) (20.2 \%), C(17 : 0) (8.9 \%) and C(17 : 1)ω6c (8.1 \%) as major fatty acids. The cellular polar lipids were identified as phosphatidylglycerol, monoglycosyldiglyceride, glucuronopyranosyldiglyceride and two unidentified glycolipids. The G+C content of the genomic DNA was 55.2 mol\%. Based on 16S rRNA gene sequence similarities, the strain was most closely related to Henriciella marina Iso4(T) and Maribaculum marinum P38(T), with similarities of 97.8 and 97.0 \%, respectively. The DNA-DNA relatedness between strain SD10(T) and H. marina Iso4(T) was 12.0±3.2 \%. A phylogenetic analysis based on 16S rRNA gene sequences showed that M. marinum P38(T) and H. marina Iso4(T) formed a monophyletic cluster and that their 16S rRNA gene sequence similarity was 98.1 \%. DNA-DNA hybridization between H. marina Iso4(T) and M. marinum LMG 24711(T) was 22.9±2.7 \%, indicating that the two strains belong to separate species. On the basis of chemotaxonomic data and molecular properties, we propose that strain SD10(T) represents a novel species of the genus Henriciella, for which the name Henriciella litoralis sp. nov. is proposed. The type strain is SD10(T) ( = KACC 13700(T) = DSM 22014(T)). In addition, we propose to transfer Maribaculum marinum Lai et al. 2009 to the genus Henriciella as Henriciella aquimarina nom. nov. (type strain P38(T) = CCTCC AB 208227(T) = LMG 24711(T) = MCCC 1A01086(T)), and we present an emended description of the genus Henriciella.
This article was published in Int J Syst Evol Microbiol
and referenced in Journal of Microbial & Biochemical Technology