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Abstract

Strain R46, a marine alphaproteobacterium, was isolated from Mediterranean seawater at Malvarrosa beach, Valencia, Spain. It is an aerobic chemo-organotrophic, mesophilic and slightly halophilic organism, with complex ionic requirements. Phylogenetic analyses based on the 16S rRNA and gene sequences showed that strain R46 formed a separate branch within the family , bearing similarities below 94.7 and 80.3 %, respectively, to any other recognized species. It contained Q10 as the predominant isoprenoid quinone and Cω7/Cω6 as the major cellular fatty acid. Phosphatidylglycerol was the only identified polar lipid, although other lipids were also detected. The DNA G+C content of the genomic DNA was 61.3 mol%. On the basis of extensive phenotypic and phylogenetic comparative analysis, it is concluded that the strain represents a novel genus and species, for which the name gen. nov., sp. nov. is proposed. The type strain of the type species is R46 ( = CECT 7668 = KCTC 23349).

Funding
This study was supported by the:
  • Spanish Ministerio de Ciencia e Innovación (Award CGL2010-18132 BOS and CGL2005-02292/BOS)
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2012-12-01
2021-05-11
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