%0 Journal Article %A Cho, Jang-Cheon %A Giovannoni, Stephen J. %T Fulvimarina pelagi gen. nov., sp. nov., a marine bacterium that forms a deep evolutionary lineage of descent in the order ‘Rhizobiales’ %D 2003 %J International Journal of Systematic and Evolutionary Microbiology, %V 53 %N 6 %P 1853-1859 %@ 1466-5034 %R https://doi.org/10.1099/ijs.0.02644-0 %K HTC, high-throughput culturing %I Microbiology Society, %X Three brownish-yellow bacterial strains were isolated from the western Sargasso Sea by high-throughput culturing methods and characterized by polyphasic approaches. All isolates were Gram-negative, strictly aerobic, chemoheterotrophic, non-motile short rods that contained carotenoid pigments. Phylogenetic analyses based on 16S rRNA gene sequences, DNA–DNA hybridization and DNA G+C content, along with phenotypic characteristics, revealed that they belonged to the same species. The strains utilized a wide range of substrates, including pentoses, hexoses, oligosaccharides, sugar alcohols, organic acids and amino acids, as sole carbon sources. The DNA G+C content of the isolates ranged from 57·6 to 59·9 mol%. The predominant cellular fatty acid constituent was C18 : 1 ω7c, whilst C16 : 0, C18 : 0 and C19 : 0 ω8c cyclo were also abundant. The organism related most closely to these strains, as determined by 16S rDNA sequence comparison, was the recently described species Aurantimonas coralicida (93·3–93·8 % similarity). Phylogenetic analyses indicated that the strains formed a distinct and deep evolutionary lineage of descent, together with A. coralicida, within the order ‘Rhizobiales’ of the α-Proteobacteria. This lineage could not be associated with any of the ten known families in the order ‘Rhizobiales’. From polyphasic evidence, it is proposed that the strains be placed into a novel genus and species, Fulvimarina pelagi gen. nov., sp. nov. (type strain, HTCC2506T=ATCC BAA-666T=KCTC 12091T=DSM 15513T). %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.02644-0