Genome Sequence of Strain HTCC2083, a Novel Member of the Marine Clade Roseobacter

Strain HTCC2083 was isolated from Oregon seawater using dilution-to-extinction culturing and represents a novel member of the Roseobacter clade. The draft genome sequence of HTCC2083 is presented here. The genome is predicted to contain genes for aerobic anoxygenic phototrophy, sulfite-oxidizing chemolithotrophy, anapleurotic CO2 fixation, carbon monoxide oxidation, and dimethylsulfoniopropionate (DMSP) utilization. The marine clade Roseobacter (2, 5) is comprised of meta-bolically diverse members of bacterioplankton that represent chemoheterotrophic or mixotrophic lifestyles and thus are characterized as ecological generalists (9, 11). Many members of this clade have been analyzed by physiological and genomic approaches and have been shown to possess diverse metabolic suites, including aerobic anoxygenic phototrophy (AAnP), anapleurotic CO2 fixation, inorganic sulfur compound oxida-tion, demethylation or cleavage of dimethylsulfoniopropionate (DMSP), denitrification, carbon monoxide oxidation, and both C1 and aromatic compound utilization (6, 9, 10, 12, 13)