Marine bacteria are key drivers of ocean biogeochemistry. Despite the increasing number of studies, the complex interaction of marine bacterioplankton communities with their environment is still not fully understood. Additionally, our knowledge about prominent marine lineages is mostly based on genomic information retrieved from single isolates, which do not necessarily represent these groups. Consequently, deciphering the ecological contributions of single bacterioplankton community members is one major challenge in marine microbiology. In the present study, we reconstructed 13 archaeal and 46 bacterial metagenome-assembled genomes (MAGs) from four metagenomic data sets derived from the North Sea. Archaeal MAGs were affiliated to Marine Group II within the Euryarchaeota. Bacterial MAGs mainly belonged to marine groups within the Bacteroidetes as well as alpha- and gammaproteobacteria. In addition, two bacterial MAGs were classified as members of the Actinobacteria and Verrucomicrobiota, respectively. The reconstructed genomes contribute to our understanding of important marine lineages and may serve as a basis for further research on functional traits of these groups.
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