Journal
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
Volume 108, Issue 3, Pages 537-544Publisher
SPRINGER
DOI: 10.1007/s10482-015-0508-1
Keywords
Bacteroidetes; Flavobacteriaceae; Neptunitalea chrysea gen. nov.sp nov.; 16S rRNA gene; Polyphasic taxonomy; In situ cultivation technique
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Funding
- New Energy and Industrial Technology Development Organization (NEDO)
- Institute for Fermentation, Osaka, Japan
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A novel pale-yellow coloured bacterial strain, designated AM327(T), was isolated by using an in situ cultivation technique from seawater from the coastal zone around a shipyard located in Otsuchi Bay, Japan. The strain was found to be facultatively anaerobic, Gram-stain negative, chemoheterotrophic, non-motile and rod-shaped. Preliminary analysis based on the 16S rRNA gene sequence revealed that the novel isolate is affiliated with the family Flavobacteriaceae of the phylum Bacteroidetes and that it shows high sequence similarity (94.7 %) to Frondibacter aureus A5Q-67(T). The strain can be differentiated phenotypically from recognised members of the family Flavobacteriaceae. The DNA G+C content of strain AM327(T) was determined to be 36.2 mol%; MK-6 was identified as the major menaquinone; iso-C15:0 and iso-C17:0 3-OH were identified as the major (> 10 %) cellular fatty acids. The polar lipid profile was found to consist of phosphatidylethanolamine, an unidentified aminophospholipid, an unidentified glycolipid and two unidentified lipids. From the distinct phylogenetic position and combination of genotypic and phenotypic characteristics, strain AM327(T) is considered to represent a novel genus for which the name Neptunitalea chrysea gen. nov., sp. nov. is proposed. The type strain of N. chrysea is AM327(T) (=KCTC 32989(T) = NBRC 110019(T)).
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