Synthetic and biological surfactant effects on freshwater biofilm community composition and metabolic activity

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dc.contributor.authorGill, Stephanie P.
dc.contributor.authorHunter, Billy
dc.contributor.authorCoulson, Laura E.
dc.contributor.authorBanat, Ibrahim M.
dc.contributor.authorSchelker, Jakob
dc.date.accessioned2022-09-30T13:53:11Z
dc.date.available2022-09-30T13:53:11Z
dc.date.issued2022-09-19
dc.descriptionPublication history: Accepted - 8 September 2022; Published - 19 September 2022.en_US
dc.description.abstractSurfactants are used to control microbial biofilms in industrial and medical settings. Their known toxicity on aquatic biota, and their longevity in the environment, has encouraged research on biodegradable alternatives such as rhamnolipids. While previous research has investigated the effects of biological surfactants on single species biofilms, there remains a lack of information regarding the effects of synthetic and biological surfactants in freshwater ecosystems. We conducted a mesocosm experiment to test how the surfactant sodium dodecyl sulfate (SDS) and the biological surfactant rhamnolipid altered community composition and metabolic activity of freshwater biofilms. Biofilms were cultured in the flumes using lake water from Lake Lunz in Austria, under high (300 ppm) and low (150 ppm) concentrations of either surfactant over a four-week period. Our results show that both surfactants significantly affected microbial diversity. Up to 36% of microbial operational taxonomic units were lost after surfactant exposure. Rhamnolipid exposure also increased the production of the extracellular enzymes, leucine aminopeptidase, and glucosidase, while SDS exposure reduced leucine aminopeptidase and glucosidase. This study demonstrates that exposure of freshwater biofilms to chemical and biological surfactants caused a reduction of microbial diversity and changes in biofilm metabolism, exemplified by shifts in extracellular enzyme activities.en_US
dc.description.sponsorshipSG is funded by an Ulster University Vice Chancellors Doctoral Research Fellowship, and received additional support through an Ulster University Broadening Horizons Travel Bursary. Analytical costs were partly supported by the HYDRO-DIVERSITY project funded by the Environmental Systems Sciences Program of the Austrian Academy of Sciences (ÖAW) to JS, and core funding of the AFBI Aquatic Chemistry Laboratory (WH).en_US
dc.identifierhttp://hdl.handle.net/20.500.12518/485
dc.identifier.citationGill, S.P., Hunter, W.R., Coulson, L.E., Banat, I.M. and Schelker, J. (2022) ‘Synthetic and biological surfactant effects on freshwater biofilm community composition and metabolic activity’, Applied Microbiology and Biotechnology. Springer Science and Business Media LLC. Available at: https://doi.org/10.1007/s00253-022-12179-4.en_US
dc.identifier.issn0175-7598
dc.identifier.issn1432-0614 (electronic)
dc.identifier.urihttps://doi.org/10.1007/s00253-022-12179-4
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.rightsThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http:// creat iveco mmons. org/ licen ses/ by/4. 0/.en_US
dc.subjectBiofilmen_US
dc.subjectSurfactantsen_US
dc.subjectFreshwateren_US
dc.subjectMetabolicen_US
dc.subjectSequencingen_US
dc.subjectMetagenomicsen_US
dc.titleSynthetic and biological surfactant effects on freshwater biofilm community composition and metabolic activityen_US
dc.typeArticleen_US
dcterms.dateAccepted2022-09-08
dcterms.dateSubmitted2022-07-27

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