The microbial nitrogen-cycling network

  title={The microbial nitrogen-cycling network},
  author={Marcel M M Kuypers and Hannah K. Marchant and Boran Kartal},
  journal={Nature Reviews Microbiology},
Nitrogen is an essential component of all living organisms and the main nutrient limiting life on our planet. By far, the largest inventory of freely accessible nitrogen is atmospheric dinitrogen, but most organisms rely on more bioavailable forms of nitrogen, such as ammonium and nitrate, for growth. The availability of these substrates depends on diverse nitrogen-transforming reactions that are carried out by complex networks of metabolically versatile microorganisms. In this Review, we… 
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