1887

Abstract

A Gram-negative, slightly halophilic, strictly aerobic, motile chemoorganotrophic bacterium, strain MED92, was isolated from a surface water sample from the eastern Mediterranean Sea. Phylogenetic analysis based on its 16S rRNA gene sequence, retrieved from the whole-genome sequence, demonstrated that this isolate is unique, showing <93 % sequence similarity to species of the families and . The polar lipid profile of the novel strain consisted of phosphatidylethanolamine, phosphatidylglycerol, an unknown aminophospholipid and diphosphatidylglycerol. Major fatty acids are 16 : 17/15 iso 2-OH (41.2 % relative amount), 18 : 17 (35.9 %), 16 : 0 (16.1 %), 10 : 0 3-OH (5.0 %) and 18 : 0 (1.0 %). Preferred carbon sources are organic acids and amino acids. The DNA G+C content is 46.6 mol%. Based on a phenotypic, chemotaxonomic and phylogenetic analyses, it is proposed that this marine bacterium represents a novel genus and species, for which the name gen. nov., sp. nov. is proposed. The type strain is MED92 (=CECT 7075=CCUG 52065).

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2007-05-01
2019-10-16
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Phylogenetic trees based on nearly complete 16S rRNA gene sequences constructed using the maximum-parsimony and maximum-likelihood methods, respectively. [PDF](36 KB)

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Cellular morphology of MED92 in the exponential growth phase as viewed with a scanning electron microscope. [PDF](644 KB)

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