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Salinity and host drive Ulva‐associated bacterial communities across the Atlantic–Baltic Sea gradient

2022Journal article Open access
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dc.contributor.authorVan der Loos, Luna M.
dc.contributor.authorD’hondt, Sofie
dc.contributor.authorEngelen, Aschwin
dc.contributor.authorPavia, Henrik
dc.contributor.authorToth, Gunilla B.
dc.contributor.authorWillems, Anne
dc.contributor.authorWeinberger, Florian
dc.contributor.authorDe Clerck, Olivier
dc.contributor.authorSteinhagen, Sophie
dc.date.accessioned2022-09-23T13:05:11Z
dc.date.available2022-09-23T13:05:11Z
dc.date.issued2022
dc.description.abstractThe green seaweed Ulva is a model system to study seaweed-bacteria interactions, but the impact of environmental drivers on the dynamics of these interactions is little understood. In this study, we investigated the stability and variability of the seaweed-associated bacteria across the Atlantic-Baltic Sea salinity gradient. We characterized the bacterial communities of 15 Ulva sensu lato species along 2,000 km of coastline in a total of 481 samples. Our results demonstrate that the Ulva-associated bacterial composition was strongly structured by both salinity and host species (together explaining between 34% and 91% of the variation in the abundance of the different bacterial genera). The largest shift in the bacterial consortia coincided with the horohalinicum (5-8 PSU, known as the transition zone from freshwater to marine conditions). Low-salinity communities especially contained high relative abundances of Luteolibacter, Cyanobium, Pirellula, Lacihabitans and an uncultured Spirosomaceae, whereas high-salinity communities were predominantly enriched in Litorimonas, Leucothrix, Sulfurovum, Algibacter and Dokdonia. We identified a small taxonomic core community (consisting of Paracoccus, Sulfitobacter and an uncultured Rhodobacteraceae), which together contributed to 14% of the reads per sample, on average. Additional core taxa followed a gradient model, as more core taxa were shared between neighbouring salinity ranges than between ranges at opposite ends of the Atlantic-Baltic Sea gradient. Our results contradict earlier statements that Ulva-associated bacterial communities are taxonomically highly variable across individuals and largely stochastically defined. Characteristic bacterial communities associated with distinct salinity regions may therefore facilitate the host's adaptation across the environmental gradient.pt_PT
dc.description.sponsorshipEMBRC Belgium—FWO project I001621N; Formas national research programme for food (grant no. 2020-03119)
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1111/mec.16462pt_PT
dc.identifier.issn0962-1083
dc.identifier.urihttp://hdl.handle.net/10400.1/18292
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.relationAlgarve Centre for Marine Sciences
dc.relationNot Available
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBacterial communitiespt_PT
dc.subjectBaltic Seapt_PT
dc.subjectMicrobiomept_PT
dc.subjectSalinity gradientpt_PT
dc.subjectUlvapt_PT
dc.titleSalinity and host drive Ulva‐associated bacterial communities across the Atlantic–Baltic Sea gradientpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleNot Available
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC INST 2018/CEECINST%2F00114%2F2018%2FCP1492%2FCT0001/PT
oaire.citation.titleMolecular Ecologypt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamCEEC INST 2018
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
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication33d5a223-f2c9-4c68-984f-9213f15a05b0
relation.isAuthorOfPublication.latestForDiscovery33d5a223-f2c9-4c68-984f-9213f15a05b0
relation.isProjectOfPublicationfafa76a6-2cd2-4a6d-a3c9-772f34d3b91f
relation.isProjectOfPublication76271df2-c19d-4371-b9d3-06afe444e875
relation.isProjectOfPublication.latestForDiscoveryfafa76a6-2cd2-4a6d-a3c9-772f34d3b91f

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