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Consortia of low-abundance bacteria drive sulfate reduction-dependent degradation of fermentation products in peat soil microcosms

Consortia of low-abundance bacteria drive sulfate reduction-dependent degradation of fermentation products in peat soil microcosms

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HAUSMANN, Bela, Klaus-Holger KNORR, Katharina SCHRECK, Susannah G. TRINGE, Tijana GLAVINA DEL RIO, Alexander LOY, Michael PESTER, 2016. Consortia of low-abundance bacteria drive sulfate reduction-dependent degradation of fermentation products in peat soil microcosms. In: The ISME Journal. 10(10), pp. 2365-2375. ISSN 1751-7362. eISSN 1751-7370

@article{Hausmann2016-10Conso-34419, title={Consortia of low-abundance bacteria drive sulfate reduction-dependent degradation of fermentation products in peat soil microcosms}, year={2016}, doi={10.1038/ismej.2016.42}, number={10}, volume={10}, issn={1751-7362}, journal={The ISME Journal}, pages={2365--2375}, author={Hausmann, Bela and Knorr, Klaus-Holger and Schreck, Katharina and Tringe, Susannah G. and Glavina del Rio, Tijana and Loy, Alexander and Pester, Michael} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/34419"> <dcterms:title>Consortia of low-abundance bacteria drive sulfate reduction-dependent degradation of fermentation products in peat soil microcosms</dcterms:title> <dc:creator>Pester, Michael</dc:creator> <dc:contributor>Knorr, Klaus-Holger</dc:contributor> <dcterms:abstract xml:lang="eng">Dissimilatory sulfate reduction in peatlands is sustained by a cryptic sulfur cycle and effectively competes with methanogenic degradation pathways. In a series of peat soil microcosms incubated over 50 days, we identified bacterial consortia that responded to small, periodic additions of individual fermentation products (formate, acetate, propionate, lactate or butyrate) in the presence or absence of sulfate. Under sulfate supplementation, net sulfate turnover (ST) steadily increased to 16-174 nmol cm(-3) per day and almost completely blocked methanogenesis. 16S rRNA gene and cDNA amplicon sequencing identified microorganisms whose increases in ribosome numbers strongly correlated to ST. Natively abundant (⩾0.1% estimated genome abundance) species-level operational taxonomic units (OTUs) showed no significant response to sulfate. In contrast, low-abundance OTUs responded significantly to sulfate in incubations with propionate, lactate and butyrate. These OTUs included members of recognized sulfate-reducing taxa (Desulfosporosinus, Desulfopila, Desulfomonile, Desulfovibrio) and also members of taxa that are either yet unknown sulfate reducers or metabolic interaction partners thereof. Most responsive OTUs markedly increased their ribosome content but only weakly increased in abundance. Responsive Desulfosporosinus OTUs even maintained a constantly low population size throughout 50 days, which suggests a novel strategy of rare biosphere members to display activity. Interestingly, two OTUs of the non-sulfate-reducing genus Telmatospirillum (Alphaproteobacteria) showed strongly contrasting preferences towards sulfate in butyrate-amended microcosms, corroborating that closely related microorganisms are not necessarily ecologically coherent. We show that diverse consortia of low-abundance microorganisms can perform peat soil sulfate reduction, a process that exerts control on methane production in these climate-relevant ecosystems.The ISME Journal advance online publication, 25 March 2016; doi:10.1038/ismej.2016.42.</dcterms:abstract> <dc:creator>Glavina del Rio, Tijana</dc:creator> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/34419"/> <dcterms:rights rdf:resource="http://nbn-resolving.de/urn:nbn:de:bsz:352-20150914100631302-4485392-8"/> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2016-06-15T12:06:22Z</dcterms:available> <dc:contributor>Schreck, Katharina</dc:contributor> <dc:contributor>Loy, Alexander</dc:contributor> <dc:contributor>Hausmann, Bela</dc:contributor> <dc:creator>Schreck, Katharina</dc:creator> <dc:creator>Knorr, Klaus-Holger</dc:creator> <dc:contributor>Pester, Michael</dc:contributor> <dc:language>eng</dc:language> <dcterms:issued>2016-10</dcterms:issued> <dc:contributor>Tringe, Susannah G.</dc:contributor> <dc:creator>Hausmann, Bela</dc:creator> <dc:contributor>Glavina del Rio, Tijana</dc:contributor> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2016-06-15T12:06:22Z</dc:date> <dc:creator>Loy, Alexander</dc:creator> <dc:creator>Tringe, Susannah G.</dc:creator> </rdf:Description> </rdf:RDF>

Dateiabrufe seit 15.06.2016 (Informationen über die Zugriffsstatistik)

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