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Applied and Environmental Microbiology, March 2002, p. 1454-1457, Vol. 68, No. 3
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.3.1454-1457.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Nitrite as a Stimulus for Ammonia-Starved Nitrosomonas europaea{dagger}

Hendrikus J. Laanbroek,* Marie-José Bär-Gilissen, and Hans L. Hoogveld

Department of Microbial Ecology, KNAW-NIOO Centre for Limnology, 3631 AC Nieuwersluis, The Netherlands

Received 6 August 2001/ Accepted 13 December 2001

Ammonia-starved cells of Nitrosomonas europaea are able to preserve a high level of ammonia-oxidizing activity in the absence of ammonium. However, when the nitrite-oxidizing cells that form part of the natural nitrifying community do not keep pace with the ammonia-oxidizing cells, nitrite accumulates and may subsequently inhibit ammonia oxidation. The maintenance of a high ammonia-oxidizing capacity during starvation is then nullified. In this study we demonstrated that cells of N. europaea starved for ammonia were not sensitive to nitrite, either when they were starved in the presence of nitrite or when nitrite was supplied simultaneously with fresh ammonium. In the latter case, the initial ammonia-oxidizing activity of starved cells was stimulated at least fivefold.

* Corresponding author. Mailing address: NIOO-KNAW Centre for Limnology, P.O. Box 1299, 3600 BG Maarssen, The Netherlands. Phone: 31 294 239336. Fax: 31 294 232224. E-mail: laanbroek{at}cl.nioo.knaw.nl.

{dagger} Publication 2893 of the NIOO-KNAW Centre for Limnology, Nieuwersluis, The Netherlands.

Applied and Environmental Microbiology, March 2002, p. 1454-1457, Vol. 68, No. 3
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.3.1454-1457.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Bollmann, A., Schmidt, I., Saunders, A. M., Nicolaisen, M. H. (2005). Influence of Starvation on Potential Ammonia-Oxidizing Activity and amoA mRNA Levels of Nitrosospira briensis. Appl. Environ. Microbiol. 71: 1276-1282 [Abstract] [Full Text]  
  • Bollmann, A., Bar-Gilissen, M.-J., Laanbroek, H. J. (2002). Growth at Low Ammonium Concentrations and Starvation Response as Potential Factors Involved in Niche Differentiation among Ammonia-Oxidizing Bacteria. Appl. Environ. Microbiol. 68: 4751-4757 [Abstract] [Full Text]  


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