Psychrobacter aestuarii sp. nov., isolated from a tidal flat sediment

다국어 초록 (Multilingual Abstract)

<P>A Gram-negative-staining, non-motile, non-spore-forming and strictly aerobic bacterial strain, SC35<SUP>T</SUP>, was isolated from tidal flat sediment collected from the South Sea, Korea, and subjected to a taxonomic study using a polyphasic approach. The organism grew optimally at 20-30 °C and with 1-2 % (w/v) NaCl. Strain SC35<SUP>T</SUP> contained ubiquinone-8 as the predominant respiratory lipoquinone and C18 : 1<I>ω</I>9<I>c</I> as the major fatty acid. The DNA G<I>+</I>C content was 48.5 mol%. A phylogenetic tree based on 16S rRNA gene sequences showed that strain SC35<SUP>T</SUP> formed a lineage within the genus <I>Psychrobacter</I> (94.3-96.5 % sequence similarity), forming a distinct branch in a clade also containing <I>Psychrobacter pacificensis</I> NIBH P2K6<SUP>T</SUP> and <I>Psychrobacter celer</I> SW-238<SUP>T</SUP>. On the basis of phenotypic and phylogenetic data, strain SC35<SUP>T</SUP> (=KCTC 22503<SUP>T</SUP>=JCM 16343<SUP>T</SUP>) was placed in the genus <I>Psychrobacter</I> as the type strain of a novel species, for which the name <I>Psychrobacter aestuarii</I> sp. nov. is proposed.</P>