Halioglobus maricola sp. nov., isolated from coastal seawater

초록

A Gram-stain-negative, rod-shaped, aerobic, non-flagellated, chemoheterotrophic bacterium, designated IMCC14385(T), was isolated from surface seawater of the East Sea, Republic of Korea. The 16S rRNA gene sequence analysis indicated that IMCC14385(T) represented a member of the genus Halioglobus sharing 94.6-97.8% similarities with species of the genus. Whole-genome sequencing of IMCC14385(T) revealed a genome size of 4.3 Mbp and DNA G+C content of 56.7 mol%. The genome of IMCC14385(T) shared an average nucleotide identity of 76.6% and digital DNA-DNA hybridization value of 21.6% with the genome of Halioglobus japonicus KCTC 23429(T). The genome encoded the complete poly-beta-hydroxybutyrate biosynthesis pathway. The strain contained summed feature 8 (C-18:1 omega 7c and/or C-18:1 omega 6c), summed feature 3 (C-16:1 omega 7c and/or C-16:1 omega 6c) and C-17:1 omega 8c as the predominant cellular fatty acids as well as ubiquinone-8 (0-8) as the respiratory quinone. The polar lipids detected in the strain were phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, five unidentified phospholipids, an unidentified aminolipid, an unidentified aminophospholipid and four unidentified lipids. On the basis of taxonomic data obtained in this study, it is suggested that IMCC14385(T) represents a novel species of the genus Halioglobus for which the name Halioglobus maricola sp. nov. is proposed. The type strain is IMCC14385(T) (=KCTC 72520(T) =NBRC 114072(T)).

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