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dc.contributor.authorSvenning, Jon Brage
dc.contributor.authorVasskog, Terje
dc.contributor.authorCampbell, Karley Lynn
dc.contributor.authorBæverud, Agnethe Hansen
dc.contributor.authorMyhre, Torbjørn Norberg
dc.contributor.authorDalheim, Lars
dc.contributor.authorForgereau, Zoé Lulu
dc.contributor.authorOsanen, Janina Emilia
dc.contributor.authorHansen, Espen Holst
dc.contributor.authorBernstein, Hans Christopher
dc.date.accessioned2024-09-13T11:17:50Z
dc.date.available2024-09-13T11:17:50Z
dc.date.issued2024-01-27
dc.description.abstractThe diatom lipidome actively regulates photosynthesis and displays a high degree of plasticity in response to a light environment, either directly as structural modifications of thylakoid membranes and protein–pigment complexes, or indirectly via photoprotection mechanisms that dissipate excess light energy. This acclimation is crucial to maintaining primary production in marine systems, particularly in polar environments, due to the large temporal variations in both the intensity and wavelength distributions of downwelling solar irradiance. This study investigated the hypothesis that Arctic marine diatoms uniquely modify their lipidome, including their concentration and type of pigments, in response to wavelength-specific light quality in their environment. We postulate that Arctic-adapted diatoms can adapt to regulate their lipidome to maintain growth in response to the extreme variability in photosynthetically active radiation. This was tested by comparing the untargeted lipidomic profiles, pigmentation, specific growth rates and carbon assimilation of the Arctic diatom Porosira glacialis vs. the temperate species Coscinodiscus radiatus during exponential growth under red, blue and white light. Here, we found that the chromatic wavelength influenced lipidome remodeling and growth in each strain, with P. glacialis showing effective utilization of red light coupled with increased inclusion of primary light-harvesting pigments and polar lipid classes. These results indicate a unique photoadaptation strategy that enables Arctic diatoms like P. glacialis to capitalize on a wide chromatic growth range and demonstrates the importance of active lipid regulation in the Arctic light environment.en_US
dc.identifier.citationSvenning, Vasskog, Campbell, Bæverud, Myhre, Dalheim, Forgereau, Osanen, Hansen, Bernstein. Lipidome Plasticity Enables Unusual Photosynthetic Flexibility in Arctic vs. Temperate Diatoms. Marine Drugs. 2024;22(2)en_US
dc.identifier.cristinIDFRIDAID 2261256
dc.identifier.doi10.3390/md22020067
dc.identifier.issn1660-3397
dc.identifier.urihttps://hdl.handle.net/10037/34713
dc.language.isoengen_US
dc.publisherMDPIen_US
dc.relation.journalMarine Drugs
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.titleLipidome Plasticity Enables Unusual Photosynthetic Flexibility in Arctic vs. Temperate Diatomsen_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)
Except where otherwise noted, this item's license is described as Attribution 4.0 International (CC BY 4.0)