A novel sulfate-reducing bacterium was isolated from pristine sediments of Lake Stechlin, Germany. This strain, STP12T, was found to contain predominantly c-type cytochromes and to reduce sulfate, sulfite and thiosulfate using lactate as an electron donor. Although STP12T could not utilize elemental sulfur as an electron acceptor, it could support growth by dissimilatory Fe(III) reduction. In a comparison of 16S rRNA gene sequences, STP12T was 96.7 % similar to Desulfosporosinus auripigmenti DSM 13351T, 96.5 % similar to Desulfosporosinus meridiei DSM 13257T and 96.4 % similar to Desulfosporosinus orientis DSM 765T. DNA-DNA hybridization experiments revealed that strain STP12T shows only 32 % reassociation with the type strain of the type species of the genus, D. orientis DSM 765T. These data, considered in conjunction with strain-specific differences in heavy metal tolerance, cell-wall chemotaxonomy and riboprint patterns, support recognition of strain STP12T (=DSM 15449T=JCM 12239T) as the type strain of a distinct and novel species within the genus Desulfosporosinus, Desulfosporosinus lacus sp. nov.
|Original language||English (US)|
|Number of pages||8|
|Journal||International Journal of Systematic and Evolutionary Microbiology|
|State||Published - Dec 1 2006|
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics