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Nutrient‐driven growth and microbiome shifts in the brown alga Sargassum fluitans III

2025-06-20Artigo científico Acesso aberto
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datacite.subject.sdg14:Proteger a Vida Marinha
datacite.subject.sdg13:Ação Climática
datacite.subject.sdg06:Água Potável e Saneamento
dc.contributor.authorTheirlynck, Tom
dc.contributor.authorStaat, Lotte
dc.contributor.authorServania, Dhaishendra
dc.contributor.authorEngelen, Aschwin
dc.contributor.authorTussenbroek, Brigitta I. van
dc.contributor.authorMuyzer, Gerard
dc.contributor.authorVisser, Petra M.
dc.contributor.authorAmaral‐Zettler, Linda
dc.date.accessioned2026-04-22T10:21:35Z
dc.date.available2026-04-22T10:21:35Z
dc.date.issued2025-06-20
dc.description.abstractSince 2011, holopelagic Sargassum has been accumulating in a region of the tropical Atlantic now referred to as the Great Atlantic Sargassum Belt (GASB). Among the hypothesized contributors to these accumulations are the increased inputs of nitrogen (N) and phosphorus (P) in the tropical Atlantic Ocean. Little is known about the effects of N and P additions on Sargassum physiology and its microbiome. We studied the effects of N, P, and NP additions on the growth, photosynthetic efficiency, and microbiome composition of Sargassum fluitans III in a six-day experiment on the Caribbean Island of Curaçao. Sargassum fluitans III took up most nitrate and phosphate within 3days with respective uptake rates of 0.343 and 0.0399μmol · g−1 DW · h−1. Fv/Fm decreased in the control after 6days but remained constant in nutrient treatments. Growth rates did not differ significantly among treatments, but a trend in higher growth rates in the NP treatment was discerned, suggesting a possible NP co-limitation. The relative abundance of epiphytic Cyanobacteria such as Schizothrix and bacteria such as Lentilitoribacter increased under N and P addition, while heterotrophic Rhodobacteraceae decreased in abundance. Microeukaryotic communities responded with varying changes in alpha diversity, possibly steered by increased photosynthesis and growth of S. fluitans III or bacterial interactions. The physiological response to N and P and rapid change of the microbiome demonstrates that the studied S. fluitans III can quickly benefit from increased nutrient concentrations, which might contribute to its growth success in the GASB.eng
dc.description.sponsorshipCEECINST/00114/2018
dc.identifier.doi10.1111/jpy.70045
dc.identifier.eissn1529-8817
dc.identifier.issn0022-3646
dc.identifier.urihttp://hdl.handle.net/10400.1/28739
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.relation.ispartofJournal of Phycology
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectBrown alga
dc.subjectGrowth
dc.subjectMicrobiome
dc.subjectNutrient limitation
dc.subjectPhotosynthesis
dc.titleNutrient‐driven growth and microbiome shifts in the brown alga Sargassum fluitans IIIeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberUIDB/04326/2020
oaire.awardNumberLA/P/0101/2020
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.citation.endPage950
oaire.citation.startPage933
oaire.citation.titleJournal of Phycology: An International Journal of Algal Research
oaire.citation.volume63
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameEngelen
person.givenNameAschwin
person.identifier.ciencia-id911A-9A0C-744D
person.identifier.orcid0000-0002-9579-9606
person.identifier.ridM-3432-2013
person.identifier.scopus-author-id6701622770
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublication33d5a223-f2c9-4c68-984f-9213f15a05b0
relation.isAuthorOfPublication.latestForDiscovery33d5a223-f2c9-4c68-984f-9213f15a05b0
relation.isProjectOfPublicationfafa76a6-2cd2-4a6d-a3c9-772f34d3b91f
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