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  • Rahlff, JaninaLinnéuniversitetet,Institutionen för biologi och miljö (BOM),Ctr Ecol & Evolut Microbial Model Syst EEMiS (author)

Ecogenomics and cultivation reveal distinctive viral-bacterial communities in the surface microlayer of a Baltic Sea slick

  • Article/chapterEnglish2023

Publisher, publication year, extent ...

  • Springer Nature,2023
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:lnu-125129
  • https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-125129URI
  • https://doi.org/10.1038/s43705-023-00307-8DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Visible surface films, termed slicks, can extensively cover freshwater and marine ecosystems, with coastal regions being particularly susceptible to their presence. The sea-surface microlayer (SML), the upper 1-mm at the air-water interface in slicks (herein slick SML) harbors a distinctive bacterial community, but generally little is known about SML viruses. Using flow cytometry, metagenomics, and cultivation, we characterized viruses and bacteria in a brackish slick SML in comparison to non-slick SML as well as seawater below slick and non-slick areas (subsurface water = SSW). Size-fractionated filtration of all samples distinguished viral attachment to hosts and particles. The slick SML contained higher abundances of virus-like particles, prokaryotic cells, and dissolved organic carbon compared to non-slick SML and SSW. The community of 428 viral operational taxonomic units (vOTUs), 426 predicted as lytic, distinctly differed across all size fractions in the slick SML compared to non-slick SML and SSW. Specific metabolic profiles of bacterial metagenome-assembled genomes and isolates in the slick SML included a prevalence of genes encoding motility and carbohydrate-active enzymes (CAZymes). Several vOTUs were enriched in slick SML, and many virus variants were associated with particles. Nine vOTUs were only found in slick SML, six of them being targeted by slick SML-specific clustered-regularly interspaced short palindromic repeats (CRISPR) spacers likely originating from Gammaproteobacteria. Moreover, isolation of three previously unknown lytic phages for Alishewanella sp. and Pseudoalteromonas tunicata, abundant and actively replicating slick SML bacteria, suggests that viral activity in slicks contributes to biogeochemical cycling in coastal ecosystems.

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  • Wietz, MatthiasAlfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Germany;Max Planck Institute for Marine Microbiology, Germany (author)
  • Giebel, Helge-AnsgarCarl von Ossietzky University of Oldenburg, Germany (author)
  • Bayfield, OliverUniversity of York, UK (author)
  • Nilsson, EmelieLinnéuniversitetet,Institutionen för biologi och miljö (BOM),Ctr Ecol & Evolut Microbial Model Syst EEMiS(Swepub:lnu)emniab (author)
  • Bergström, KristoferLinnéuniversitetet,Institutionen för biologi och miljö (BOM),Ctr Ecol & Evolut Microbial Model Syst EEMiS(Swepub:lnu)krbeaa (author)
  • Kieft, KristopherUniversity of Wisconsin-Madison, USA (author)
  • Anantharaman, KarthikUniversity of Wisconsin-Madison, USA (author)
  • Ribas-Ribas, MarianaCarl von Ossietzky University of Oldenburg, Germany (author)
  • Schweitzer, Hannah D.The Arctic University of Norway, Norway (author)
  • Wurl, OliverCarl von Ossietzky University of Oldenburg, Germany (author)
  • Hoetzinger, MatthiasLinnéuniversitetet,Institutionen för biologi och miljö (BOM),Ctr Ecol & Evolut Microbial Model Syst EEMiS (author)
  • Antson, AlfredUniversity of York, UK (author)
  • Holmfeldt, Karin,1980-Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Ctr Ecol & Evolut Microbial Model Syst EEMiS(Swepub:lnu)mhoka (author)
  • LinnéuniversitetetInstitutionen för biologi och miljö (BOM) (creator_code:org_t)

Related titles

  • In:ISME Communications: Springer Nature3:12730-6151

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