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Next Article 

Applied and Environmental Microbiology, April 2008, p. 1963-1971, Vol. 74, No. 7
0099-2240/08/$08.00+0     doi:10.1128/AEM.00694-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Epiphyton as a Niche for Ammonia-Oxidizing Bacteria: Detailed Comparison with Benthic and Pelagic Compartments in Shallow Freshwater Lakes{triangledown}

M. Coci,* P. L. E. Bodelier, and H. J. Laanbroek

Netherlands Institute of Ecology (NIOO-KNAW), Department of Microbial Wetland Ecology, Rijksstraatweg 6, 3631 AC Nieuwersluis, The Netherlands

Received 27 March 2007/ Accepted 18 January 2008

Next to the benthic and pelagic compartments, the epiphyton of submerged macrophytes may offer an additional niche for ammonia-oxidizing bacteria in shallow freshwater lakes. In this study, we explored the potential activities and community compositions of ammonia-oxidizing bacteria of the epiphytic, benthic, and pelagic compartments of seven shallow freshwater lakes which differed in their trophic status, distribution of submerged macrophytes, and restoration history. PCR-denaturing gradient gel electrophoresis analyses demonstrated that the epiphytic compartment was inhabited by species belonging to cluster 3 of the Nitrosospira lineage and to the Nitrosomonas oligotropha lineage. Both the ammonia-oxidizing bacterial community compositions and the potential activities differed significantly between compartments. Interestingly, both the ammonia-oxidizing bacterial community composition and potential activity were influenced by the restoration status of the different lakes investigated.

* Corresponding author. Present address: Department of Microbiological Sciences, University of Catania, Via Androne 81, 95124 Catania, Italy. Phone: 390952504742. Fax: 390952504733. E-mail: manuela.coci{at}unict.it

{triangledown} Published ahead of print on 8 February 2008.

Applied and Environmental Microbiology, April 2008, p. 1963-1971, Vol. 74, No. 7
0099-2240/08/$08.00+0     doi:10.1128/AEM.00694-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.





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