Microbial organic matter degradation potential in Baltic sea sediments is influenced by depositional conditions and in situ geochemistry

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dc.contributor.authorZinke, Laura A.
dc.contributor.authorGlombitza, Clemens
dc.contributor.authorBird, Jordan T.
dc.contributor.authorRøy, Hans
dc.contributor.authorJorgensen, Bo Barker
dc.contributor.authorLloyd, Karen
dc.contributor.authorAmend, Jan P.
dc.creator.orcidhttps://orcid.org/0000-0003-3021-1098en_US
dc.creator.orcidhttps://orcid.org/0000-0002-0938-2952en_US
dc.creator.orcidhttps://orcid.org/0000-0002-6477-3091en_US
dc.creator.orcidhttps://orcid.org/0000-0001-9398-8027en_US
dc.creator.orcidhttps://orcid.org/0000-0003-0914-6375en_US
dc.creator.orcidhttps://orcid.org/0000-0003-3021-1098
dc.creator.orcidhttps://orcid.org/0000-0002-0938-2952
dc.creator.orcidhttps://orcid.org/0000-0002-6477-3091
dc.creator.orcidhttps://orcid.org/0000-0001-9398-8027
dc.creator.orcidhttps://orcid.org/0000-0003-0914-6375
dc.date.accessioned2022-03-25T21:27:32Z
dc.date.available2022-03-25T21:27:32Z
dc.date.issued2019-02-06
dc.description.abstractGlobally, marine sediments are a vast repository of organic matter, which is degraded through various microbial pathways, including polymer hydrolysis and monomer fermentation. The sources, abundances, and quality (i.e., labile or recalcitrant) of the organic matter and the composition of the microbial assemblages vary between sediments. Here, we examine new and previously published sediment metagenomes from the Baltic Sea and the nearby Kattegat region to determine connections between geochemistry and the community potential to degrade organic carbon. Diverse organic matter hydrolysis encoding genes were present in sediments between 0.25 and 67 meters below seafloor and were in higher relative abundances in those sediments that contained more organic matter. New analysis of previously published metatranscriptomes demonstrated that many of these genes were transcribed in two organic-rich Holocene sediments. Some of the variation in deduced pathways in the metagenomes correlated with carbon content and depositional conditions. Fermentation-related genes were found in all samples and encoded multiple fermentation pathways. Notably, genes involved in alcohol metabolism were amongst the most abundant of these genes, indicating that this is an important but underappreciated aspect of sediment carbon cycling. This study is a step towards a more complete understanding of microbial food webs and the impacts of depositional facies on present sedimentary microbial communities.en_US
dc.identifier.citationZinke, L.A., Glombitza, C., Bird, J.T., Røy, H., Jørgensen, B.B., Lloyd, K.G., Amend, J.P. and Reese, B.K., 2019. Microbial organic matter degradation potential in Baltic Sea sediments is influenced by depositional conditions and in situ geochemistry. Applied and environmental microbiology, 85(4), pp.e02164-18.en_US
dc.identifier.doihttps://doi.org/10.1128/AEM.02164-18
dc.identifier.urihttps://hdl.handle.net/1969.6/90327
dc.language.isoen_USen_US
dc.publisherAmerican Society of Microbiologyen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectmicrobialen_US
dc.subjectgeochemistryen_US
dc.subjectbaltic seaen_US
dc.subjectheterotrophyen_US
dc.subjectmicrobial ecologyen_US
dc.subjectsedimentsen_US
dc.titleMicrobial organic matter degradation potential in Baltic sea sediments is influenced by depositional conditions and in situ geochemistryen_US
dc.typeArticleen_US

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