Abstract
The ammonia-oxidizing microbial community colonizing clay tiles in flow channels changed in favor of ammonia-oxidizing bacteria during a 12-week incubation period even at originally high ratios of ammonia-oxidizing archaea to ammonia-oxidizing bacteria (AOB). AOB predominance was established more rapidly in flow channels incubated at 350 μM NH(4)(+) than in those incubated at 50 or 20 μM NH(4)(+). Biofilm-associated potential nitrification activity was first detected after 28 days and was positively correlated with bacterial but not archaeal amoA gene copy numbers.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Archaea / classification
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Archaea / genetics
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Archaea / growth & development*
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Archaea / metabolism*
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Bacteria / classification
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Bacteria / genetics
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Bacteria / growth & development*
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Bacteria / metabolism*
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Biodiversity*
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Cluster Analysis
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DNA, Archaeal / chemistry
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DNA, Archaeal / genetics
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DNA, Bacterial / chemistry
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DNA, Bacterial / genetics
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DNA, Ribosomal / chemistry
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DNA, Ribosomal / genetics
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Ecosystem*
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Environmental Microbiology
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Genes, rRNA
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Molecular Sequence Data
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Oxidation-Reduction
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Phylogeny
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Quaternary Ammonium Compounds / metabolism*
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RNA, Archaeal / genetics
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RNA, Bacterial / genetics
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RNA, Ribosomal, 16S / genetics
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Sequence Analysis, DNA
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Sequence Homology, Nucleic Acid
Substances
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DNA, Archaeal
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DNA, Bacterial
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DNA, Ribosomal
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Quaternary Ammonium Compounds
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RNA, Archaeal
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RNA, Bacterial
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RNA, Ribosomal, 16S