Identity and dynamics of putative N2 -fixing picoplankton in the Baltic Sea proper suggest complex patterns of regulation.

@article{Farnelid2009IdentityAD,
  title={Identity and dynamics of putative N2 -fixing picoplankton in the Baltic Sea proper suggest complex patterns of regulation.},
  author={Hanna M. Farnelid and Tomas G Oberg and Lasse Riemann},
  journal={Environmental microbiology reports},
  year={2009},
  volume={1 2},
  pages={
          145-54
        }
}
Heterocystous filamentous cyanobacteria are regarded as the main N2 -fixing organisms (diazotrophs) in the Baltic Sea. However, some studies indicate that picoplankton may also be important. The aim of this study was to examine the composition of putative diazotrophs in the picoplankton (< 3 µm) and to identify links to environmental factors. Nitrogenase (nifH) genes were amplified from community DNA by nested PCR, followed by cloning and sequencing. Clone libraries from nine environmental… CONTINUE READING
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