期刊
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
卷 63, 期 -, 页码 2248-2253出版社
MICROBIOLOGY SOC
DOI: 10.1099/ijs.0.046656-0
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资金
- National Natural Science Foundation of China [31025001, 31070061, 31170055, 41106161, 41176130]
- Hi-Tech Research and Development program of China [2011AA090703, 2012AA092103]
- Special Fund of China for Marine-scientific Research in the Public Interest [201005032-6]
- Natural Science Foundation of Shandong Province, China [JQ200910, ZR2009DZ002]
- Foundation for Young Excellent Scientists in Shandong Province, China [BS2010SW015]
- China Ocean Mineral Resources R & D Association (COMRA) Special Foundation [DY125-15-R-03, DY125-15-T-05]
A marine prosthecate bacterium, designated strain P-1 km-3(T), was isolated from deep seawater from the Pacific. Cells of strain P-1 km-3(T) were Gram-stain-negative, aerobic, catalase- and oxidase-positive, dimorphic rods with a single polar prostheca or flagellum. The strain hydrolysed gelatin and grew at 6-40 degrees C (optimum, 30 degrees C) and with 0.5-12% (w/v) NaCl (optimum, 2%). Phylogenetic analysis of the 16S rRNA gene sequences revealed that strain P-1 km-3T belonged to the family Hyphomonadaceae in the class Alphaproteobacteria and represented a separate lineage, located between the genera Oceanicaulis and Woodsholea. Sequence similarities of strain P-1 km-3T with type strains of species of the genera Oceanicaulis and Woodsholea were 93.2-93.9 %. The predominant cellular fatty acids in strain P-1 km-3(T) were C-18:1 omega 7c, C-18:0, 11-methyl C-18:1 omega 7c, C-17:0 and C-19:0 cyclo omega 8c. The major respiratory quinone of strain P-1 km-3(T) was Q-10. The polar lipids of strain P-1 km-3(T) comprised glucuronopyranosyldiglyceride (GUDG), monoglycosyldiglyceride (MGDG), sulfo-quinovosyl diacylglycerol (SQDG), phosphatidylglycerol (PG), an unidentified phospholipid (PL) and an unidentified lipid (L). The genomic DNA G C content of strain P-1 km-3T was 66.0 mol%. On the basis of the polyphasic data presented in this study, strain P-1 km-3(T) is proposed to represent a novel species in a new genus, Marinicauda pacifica gen. nov., sp. nov., within the family Hyphomonadaceae. The type strain of the type species is P-1 km-3(T) (=KACC 16526(T)=CGMCC 1.11031(T)).
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