Dynamics and functional relevance of ammonia-oxidizing archaea in two agricultural soils

Autor(en)

Kristina Schauss, Andreas Focks, Sven Leininger, Anja Kotzerke, Holger Heuer, Sören Thiele-Bruhn, Shilpi Sharma, Berndt-Michael Wilke, Michael Matthies, Kornelia Smalla, Jean Charles Munch, Wulf Amelung, Martin Kaupenjohann, Michael Schloter, Christa Schleper

Abstrakt

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.

Organisation(en)

Externe Organisation(en)

Helmholtz-Zentrum München - Deutsches Forschungszentrum für Gesundheit und Umwelt

Journal

Environmental Microbiology

Band

11

Seiten

446-56

Anzahl der Seiten

11

ISSN

1462-2912

DOI

https://doi.org/10.1111/j.1462-2920.2008.01783.x

Publikationsdatum

02-2009

Peer-reviewed

Ja

ÖFOS 2012

106022 Mikrobiologie

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/43e0baf2-979b-4b08-b139-ad80a52b264a