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dc.contributor.authorAalto, Nerea Johanna
dc.contributor.authorGiæver, Ingeborg Hulda
dc.contributor.authorEriksen, Gunilla Kristina
dc.contributor.authorIsraelsen, Linn
dc.contributor.authorKrsmanovic, Stina
dc.contributor.authorPetters, Sebastian
dc.contributor.authorBernstein, Hans Christopher
dc.date.accessioned2024-11-01T15:11:27Z
dc.date.available2024-11-01T15:11:27Z
dc.date.issued2024-09-10
dc.description.abstractMarine microalgae are a promising innovation platform for carbon capture and utilization (CCU) biotechnologies to mitigate industrial greenhouse gas emissions. However, industrial-scale cultivation of algal mono-cultures is challenging and often unscalable. Non-axenic microalgae in large semi-open photobioreactors lead to the co-cultivation of diverse microbial communities. There is limited knowledge about the “bioreactor ecology” involving microalgae interacting with the microbiome and its subsequent impact on process stability and productivity. In this study, we describe the semi-continuous industrial mass cultivation of the cold-adapted marine diatom, Porosira glacialis UiT201, by investigating the prokaryotic and microeukaryotic (phytoplankton and heterotrophic protist) communities. Data were collected in two consecutive time series experiments, representing the initiation and operation of an industrial-scale CCU photobioreactor (300,000 L). The first experiment experienced a culture “crash” of the focal strain after 39 days, while the second culture remained stable and “healthy” for 60 days. The results highlight that this mass cultivation system represents a unique industrial marine microbial ecosystem. The succession of the prokaryotic community was primarily driven by species replacement, indicating turnover due to selective bioreactor conditions and/or biological interactions. Nonetheless, the bioreactor consistently harbors a recurring and abundant core microbiome, suggesting that the closely associated bacterial community is influenced by microalgae-specific properties and can endure a dynamic and variable environment. The observed culture collapse of P. glacialis coincided with changes in the core microbiome structure and different environmental growth conditions compared to the stable and “healthy” experiment. These findings imply that cohabiting microbial taxa within industrial microalgae cultivation likely play a critical role in stabilizing the conversion of industrial CO2 into marine biomass, and changes in community structure serve as an indicator of process stability.en_US
dc.identifier.citationAalto, Giæver, Eriksen, Israelsen, Krsmanovic, Petters, Bernstein. The microbiome of bioreactors containing mass-cultivated marine diatoms for industrial carbon capture and utilization. Algal Research. 2024;83en_US
dc.identifier.cristinIDFRIDAID 2304973
dc.identifier.doi10.1016/j.algal.2024.103701
dc.identifier.issn2211-9264
dc.identifier.urihttps://hdl.handle.net/10037/35407
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalAlgal Research
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2024 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleThe microbiome of bioreactors containing mass-cultivated marine diatoms for industrial carbon capture and utilizationen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Med mindre det står noe annet, er denne innførselens lisens beskrevet som Attribution 4.0 International (CC BY 4.0)