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| Titel |
Characterization of incubation experiments and development of an enrichment culture capable of ammonium oxidation under iron-reducing conditions |
| VerfasserIn |
S. Huang, P. R. Jaffé |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 12, no. 3 ; Nr. 12, no. 3 (2015-02-10), S.769-779 |
| Datensatznummer |
250117803
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| Publikation (Nr.) |
 copernicus.org/bg-12-769-2015.pdf |
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| Zusammenfassung |
| Incubation experiments were conducted using soil samples from a forested
riparian wetland where we have previously observed anaerobic ammonium
oxidation coupled to iron reduction. Production of both nitrite and ferrous
iron was measured repeatedly during incubations when the soil slurry was
supplied with either ferrihydrite or goethite and ammonium chloride.
Significant changes in the microbial community were observed after 180 days
of incubation as well as in a continuous flow membrane reactor, using 16S
rRNA gene PCR-denaturing gradient gel electrophoresis, 454 pyrosequencing,
and real-time quantitative PCR analysis. We be Acidimicrobiaceae
bacterium A6), belonging to the Acidimicrobiaceae family, whose
closest cultivated relative is Ferrimicrobium acidiphilum (with
92% identity) and Acidimicrobium ferrooxidans (with
90% identity), might play a key role in this anaerobic biological
process that uses ferric iron as an electron acceptor while oxidizing
ammonium to nitrite. After ammonium was oxidized to nitrite, nitrogen loss
proceeded via denitrification and/or anammox. |
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