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Diatom modulation of select bacteria through use of two unique secondary metabolites

Diatom modulation of select bacteria through use of two unique secondary metabolites

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SHIBL, Ahmed A, Ashley ISAAC, Michael A OCHSENKÜHN, Anny CARDENAS BARBOSA, Cong FEI, Gregory BEHRINGER, Marc ARNOUX, Nizar DROU, Miraflor P SANTOS, Kristin C GUNSALUS, Christian VOOLSTRA, Shady A AMIN, 2020. Diatom modulation of select bacteria through use of two unique secondary metabolites. In: Proceedings of the National Academy of Sciences of the United States of America. ISSN 0027-8424. eISSN 1091-6490. Available under: doi: 10.1073/pnas.2012088117

@article{Shibl2020-10-16Diato-51431, title={Diatom modulation of select bacteria through use of two unique secondary metabolites}, year={2020}, doi={10.1073/pnas.2012088117}, issn={0027-8424}, journal={Proceedings of the National Academy of Sciences of the United States of America}, author={Shibl, Ahmed A and Isaac, Ashley and Ochsenkühn, Michael A and Cardenas Barbosa, Anny and Fei, Cong and Behringer, Gregory and Arnoux, Marc and Drou, Nizar and Santos, Miraflor P and Gunsalus, Kristin C and Voolstra, Christian and Amin, Shady A} }

<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/51431"> <dc:contributor>Behringer, Gregory</dc:contributor> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:contributor>Fei, Cong</dc:contributor> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/28"/> <dc:contributor>Voolstra, Christian</dc:contributor> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/28"/> <dc:creator>Shibl, Ahmed A</dc:creator> <dc:creator>Isaac, Ashley</dc:creator> <dc:creator>Cardenas Barbosa, Anny</dc:creator> <dc:contributor>Ochsenkühn, Michael A</dc:contributor> <dc:contributor>Amin, Shady A</dc:contributor> <dc:contributor>Arnoux, Marc</dc:contributor> <dc:creator>Fei, Cong</dc:creator> <dc:contributor>Cardenas Barbosa, Anny</dc:contributor> <dc:creator>Gunsalus, Kristin C</dc:creator> <dc:creator>Behringer, Gregory</dc:creator> <dcterms:abstract xml:lang="eng">Unicellular eukaryotic phytoplankton, such as diatoms, rely on microbial communities for survival despite lacking specialized compartments to house microbiomes (e.g., animal gut). Microbial communities have been widely shown to benefit from diatom excretions that accumulate within the microenvironment surrounding phytoplankton cells, known as the phycosphere. However, mechanisms that enable diatoms and other unicellular eukaryotes to nurture specific microbiomes by fostering beneficial bacteria and repelling harmful ones are mostly unknown. We hypothesized that diatom exudates may tune microbial communities and employed an integrated multiomics approach using the ubiquitous diatom Asterionellopsis glacialis to reveal how it modulates its naturally associated bacteria. We show that A. glacialis reprograms its transcriptional and metabolic profiles in response to bacteria to secrete a suite of central metabolites and two unusual secondary metabolites, rosmarinic acid and azelaic acid. While central metabolites are utilized by potential bacterial symbionts and opportunists alike, rosmarinic acid promotes attachment of beneficial bacteria to the diatom and simultaneously suppresses the attachment of opportunists. Similarly, azelaic acid enhances growth of beneficial bacteria while simultaneously inhibiting growth of opportunistic ones. We further show that the bacterial response to azelaic acid is numerically rare but globally distributed in the world's oceans and taxonomically restricted to a handful of bacterial genera. Our results demonstrate the innate ability of an important unicellular eukaryotic group to modulate select bacteria in their microbial consortia, similar to higher eukaryotes, using unique secondary metabolites that regulate bacterial growth and behavior inversely across different bacterial populations.</dcterms:abstract> <dc:creator>Ochsenkühn, Michael A</dc:creator> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:creator>Santos, Miraflor P</dc:creator> <dc:contributor>Santos, Miraflor P</dc:contributor> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/51431"/> <dcterms:issued>2020-10-16</dcterms:issued> <dc:contributor>Drou, Nizar</dc:contributor> <dc:contributor>Shibl, Ahmed A</dc:contributor> <dc:language>eng</dc:language> <dcterms:rights rdf:resource="http://creativecommons.org/licenses/by-nc-nd/4.0/"/> <dc:contributor>Isaac, Ashley</dc:contributor> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-10-21T08:35:13Z</dc:date> <dcterms:title>Diatom modulation of select bacteria through use of two unique secondary metabolites</dcterms:title> <dc:creator>Arnoux, Marc</dc:creator> <dc:creator>Amin, Shady A</dc:creator> <dc:creator>Voolstra, Christian</dc:creator> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-10-21T08:35:13Z</dcterms:available> <dc:rights>Attribution-NonCommercial-NoDerivatives 4.0 International</dc:rights> <dc:contributor>Gunsalus, Kristin C</dc:contributor> <dc:creator>Drou, Nizar</dc:creator> </rdf:Description> </rdf:RDF>

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