SAR11 clade dominates ocean surface bacterioplankton communities

@article{Morris2002SAR11CD,
  title={SAR11 clade dominates ocean surface bacterioplankton communities},
  author={R. Morris and M. Rapp{\'e} and S. A. Connon and K. Vergin and William A. Siebold and C. Carlson and S. Giovannoni},
  journal={Nature},
  year={2002},
  volume={420},
  pages={806-810}
}
The most abundant class of bacterial ribosomal RNA genes detected in seawater DNA by gene cloning belongs to SAR11—an α-proteobacterial clade. Other than indications of their prevalence in seawater, little is known about these organisms. Here we report quantitative measurements of the cellular abundance of the SAR11 clade in northwestern Sargasso Sea waters to 3,000 m and in Oregon coastal surface waters. On average, the SAR11 clade accounts for a third of the cells present in surface waters… Expand

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