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Diatom derived polyunsaturated aldehydes do not structure the planktonic microbial community in a mesocosm study
Department for Bioorganic Analytics, Friedrich Schiller University Jena, 07743 Jena, Germany.
Department of Biology, Division of Genetics and Physiology, University of Turku, Finland.
Umeå Marine Sciences Centre, Umeå University, 91020 Hörnefors, Sweden / Department of Ecology and Environmental Sciences, Umeå University, 901 87 Umeå, Sweden. (MPEA)
Department of Biological and Environmental Sciences, University of Gothenburg, Sweden.
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2012 (English)In: Marine Drugs, ISSN 1660-3397, E-ISSN 1660-3397, Vol. 10, 775-792 p.Article in journal (Refereed) Published
Abstract [en]

Several marine and freshwater diatoms produce polyunsaturated aldehydes (PUA) in wound-activated processes. These metabolites are also released by intact diatom cells during algal blooms. Due to their activity in laboratory experiments, PUA are considered as potential mediators of diatom-bacteria interactions. Here, we tested the hypothesis that PUA mediate such processes in a close-to-field mesocosm experiment. Natural plankton communities enriched with Skeletonema marinoi strains that differ in their PUA production, a plankton control, and a plankton control supplemented with PUA at natural and elevated concentrations were observed. We monitored bacterial and viral abundance as well as bacterial community composition and did not observe any influence of PUA on these parameters even at elevated concentrations. We rather detected an alternation of the bacterial diversity over time and differences between the two S. marinoi strains, indicating unique dynamic bacterial communities in these algal blooms. These results suggest that factors other than PUA are of significance for interactions between diatoms and bacteria. 

Place, publisher, year, edition, pages
2012. Vol. 10, 775-792 p.
Keyword [en]
mesocosm; plankton interactions; aldehydes; oxylipins
National Category
Microbiology
Research subject
Natural Science, Aquatic Ecology
Identifiers
URN: urn:nbn:se:lnu:diva-30381DOI: 10.3390/md10040775OAI: oai:DiVA.org:lnu-30381DiVA: diva2:663746
Available from: 2013-11-12 Created: 2013-11-12 Last updated: 2017-12-06Bibliographically approved

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Lindehoff, Elin

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CiteExportLink to record
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