A Gram-type-negative, obligately anaerobic, selenate-respiring bacterium, strain S4 T , was isolated from activated sludge of a wastewater treatment plant in New Jersey after enrichment with 10 mM selenate as the sole electron acceptor. In addition to its selenate-respiring capability, strain S4 T also respired arsenate with acetate as carbon source and electron donor. Fermentative growth was not observed. The optimum growth temperature was 37 6C and optimum pH was pH 7. Phylogenetic analysis

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... the 16S rRNA gene sequence revealed that strain S4 T is a novel member of the family Deferribacteraceae, with the type strain of Denitrovibrio acetiphilus as its closest cultivated relative, with 91.5 % sequence similarity. The cellular fatty acid profile was composed predominantly of straight-chain fatty acids C 14 : 0 , C 15 : 0 , C 16 : 0 , C 17 : 0 and C 18 : 0 , which distinguishes this organism from its closest relatives. The DNA G+C content was 47.7 mol%. Together, these findings support the conclusion that strain S4 T represents a novel genus and species, for which the name Seleniivibrio woodruffii gen. nov., sp. nov. is proposed. The type strain of Seleniivibrio woodruffii is S4 T (5DSM 24984 T 5ATCC BAA-2290 T ).