González, J. M., J. S. Covert, W. B. Whitman, J. R. Henriksen, F. Mayer, B. Scharf, R. Schmitt, A. Buchan, J. A. Fuhrman, R. P. Kiene, and M. A. Moran. Silicibacter pomeroyi sp. nov. and Roseovarius nubinhibens sp. nov., DMSP degrading bacteria from marine environments. 2003.  Int. J. System. Evol. Microbiol., 53(5):1261-1269.

Three Gram-negative, rod-shaped, aerobic bacteria capable of degrading dimethylsulfoniopropionate (DMSP) were isolated from marine waters. Isolates DSS-3^T, DSS-10, and ISM^T exhibited the ability to demethylate and cleave DMSP, as well as degrade other sulfur compounds related to DMSP cycling in marine environments. Intracellular PHB inclusions, surface blebs, and one polar, complex flagellum (which rotated exclusively in the clockwise direction) were observed for DSS- 3^T. The outer membrane of ISM^T was separated from the cytoplasm at the poles in a toga- like morphology. The primary fatty acid in both strains was 18:1 w7c. G+C content for the isolates were 68.0 ± 0.1, 68.1 ± 0.1, and 66.0 ± 0.2 mol% for DSS-3^T, DSS-10, and ISM^T, respectively. 16S rRNA analyses placed these organisms within the roseobacter lineage of a-Proteobacteria. Closely related species were Silicibacter lacuscaerulensis and Ruegeria atlantica (DSS-3^T and DSS-10) and Roseovarius tolerans (ISM^T). Neither DSS-3^T norISM^T exhibited 16S rRNA similarity greater than 97% or DNA-DNA hybridization values greater than 45% to their nearest described relatives. Genotypic and phenotypic analyses support the creation of two new species. These species are Silicibacter pomeroyi sp. nov. with strain DSS-3^T (=ATCC 700808, DSM 15171) as the type strain and Roseovarius nubinhibens sp. nov. with strain ISM^T (=ATCC BAA-591, DSM 15170) as the type strain. [Article]