These authors contributed equally to this work.
Dynamics and functional relevance of ammonia-oxidizing archaea in two agricultural soils
Article first published online: 22 OCT 2008
© 2008 The Authors. Journal compilation © 2008 Society for Applied Microbiology and Blackwell Publishing Ltd
Volume 11, Issue 2, pages 446–456, February 2009
How to Cite
Schauss, K., Focks, A., Leininger, S., Kotzerke, A., Heuer, H., Thiele-Bruhn, S., Sharma, S., Wilke, B.-M., Matthies, M., Smalla, K., Munch, J. C., Amelung, W., Kaupenjohann, M., Schloter, M. and Schleper, C. (2009), Dynamics and functional relevance of ammonia-oxidizing archaea in two agricultural soils. Environmental Microbiology, 11: 446–456. doi: 10.1111/j.1462-2920.2008.01783.x
- Issue published online: 18 JAN 2009
- Article first published online: 22 OCT 2008
- Received 14 December, 2007; accepted 23 August, 2008.
Crucial steps in geochemical cycles are in many cases performed by more than one group of microorganisms, but the significance of this functional redundancy with respect to ecosystem functioning is poorly understood. Ammonia-oxidizing archaea (AOA) and their bacterial counterparts (AOB) are a perfect system to address this question: although performing the same transformation step, they belong to well-separated phylogenetic groups. Using pig manure amended with different concentrations of sulfadiazine (SDZ), an antibiotic that is frequently used in veterinary medicine, it was possible to affect AOB and AOA to different degrees. Addition of manure stimulated growth of AOB in both soils and, interestingly, also growth of AOA was considerably stimulated in one of the soils. The antibiotic treatments decreased the manure effect notably on AOB, whereas AOA were affected to a lower extent. Model calculations concerning the respective proportions of AOA and AOB in ammonia oxidation indicate a substantial contribution of AOA in one of the soils that further increased under the influence of SDZ, hence indicating functional redundancy between AOA and AOB.