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Archives of Microbiology

, Volume 132, Issue 1, pp 37–40 | Cite as

Methylamine, an inhibitor of ammonium oxidation and chemoautotrophic growth in the marine nitrifying bacteriumNitrosococcus oceanus

  • Hilary E. Glover
Original Papers

Abstract

Methylamine (CH3NH 3 + ) appeared to utilize the same transport mechanism as ammonium (NH 4 + ) to enter cells ofNitrosococcus oceanus. Methylamine uptake did not show clear evidence of saturable kinetics and was not fully saturated at 20 mM. Assimilated CH3NH 3 + was not incorporated into macromolecular constituents, but inhibited rates of nitrification, chemoautotrophic CO2 fixation and growth. The degree of inhibition was dependent on the relative concentrations of NH 4 + and CH3NH 3 + . Rates of CO2 fixation and growth were inhibited four times more than the rate of nitrification.

Key words

Nitrosococcus oceanus Methylamine Nitrification Chemoautotrophic CO2 assimilation RUBPCase Growth 

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Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • Hilary E. Glover
    • 1
  1. 1.McKown PointBigelow Laboratory for Ocean SciencesWest Boothbay HarborUSA

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