1887

Abstract

A novel marine bacterial strain, HY1, was isolated from sediment of the South China Sea. The strain was aerobic and heterotrophic and formed saffron yellow-pigmented colonies on marine agar 2216. Cells were non-motile, Gram-negative rods, frequently occurring in chains. searches revealed that the 16S rRNA gene sequence of strain HY1 showed high similarity with those of members of the genera (91.7–93.8 %) and (92.6–93.5 %). Phylogenetic analysis based on 16S rRNA gene sequences showed that the strain clustered with members of both and and phylogenetic trees constructed using three different methods (neighbour-joining, maximum-parsimony and minimum-evolution) indicated that strain HY1 clustered more frequently with members of the genus . The DNA G+C content of strain HY1 was 44.4 mol% and its major cellular fatty acids (⩾5 % of the total fatty acids) were iso-15 : 1 (5.0 %), iso-15 : 0 (6.8 %), anteiso-15 : 0 (6.4 %), 15 : 0 (10.4 %), iso-16 : 0 (13.5 %), summed feature 3 (comprising iso-15 : 0 2-OH and/or 16 : 17; 6.3 %), iso-17 : 0 3-OH (5.2 %) and 17 : 0 2-OH (5.0 %). Cells contained menaquinone 6. Based on the phylogenetic and phenotypic analyses, strain HY1 should be classified as representing a novel species within the genus , for which the name sp. nov. is proposed. The type strain is HY1 (=CGMCC 1.6101=JCM 14015). Based on this study and on previously described species, an emended description of the genus is given.

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2007-02-01
2019-10-19
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Maximum-parsimony and minimum-evolution phylogenetic trees based on 16S rRNA gene sequences. [PDF](12 KB)

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Transmission electron micrographs of cells of strain HY1 . [PDF](47 KB)

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