Journal
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
Volume 59, Issue -, Pages 2247-2253Publisher
MICROBIOLOGY SOC
DOI: 10.1099/ijs.0.004267-0
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Funding
- Major State Basic Research Development Program of China [2004CB719604-3]
- National Natural Science Foundation of China [40806066]
- China Ocean Mineral Resources R&D Association (COMRA) Special Foundation [DYXM-115-01-3-01, DYXM-115-01-3-02]
- Scientific Research Fund of the Second Institute of Oceanography, SOA [JT0709]
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A Gram-negative, aerobic, neutrophilic, coccoid bacterium, strain E4A9(T), was isolated from a deep-sea sediment sample collected from the East Pacific polymetallic nodule region. 16S rRNA gene sequence analysis showed that the isolate was related to the type strain of Altererythrobacter epoxidivorans (96.0% sequence similarity). Lower 16S rRNA gene sequence similarities were observed with other members of the genera Altererythrobacter (94.7%), Erythrobacter (94.0-95.4%), Erythromicrobium (94.8%) and Porphyrobacter (94.6-95.1%) of the family Erythrobacteraceae. Phylogenetic analysis including all described species of the family Erythrobacteraceae and several members of the family Sphingomonadaceae revealed that the isolate formed a distinct phylogenetic lineage with the family Erythrobacteraceae. Chemotaxonomic analysis revealed ubiquinone-10 as the predominant respiratory quinone, anteiso-C-15:0, iso-C-14:0 and iso-C-15:0 as major fatty acids, and phosphatidylglycerol as the major polar lipid. The DNA G + C content was 71.5 mol%. The isolate contained carotenoids, but no bacteriochlorophyll a. On the basis of phenotypic and genotypic data presented in this study, strain E4A9(T) represents a novel species in a new genus in the family Erythrobacteraceae for which the name Croceicoccus marinus gen. nov., sp. nov. is proposed; the type strain is E4A9(T) (=CGMCC 1.6776(T)=JCM 14846(T)).
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