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Dinoflagellates alter their carbon and nutrient metabolic strategies across environmental gradients in the central Pacific Ocean.
Cohen, Natalie R; McIlvin, Matthew R; Moran, Dawn M; Held, Noelle A; Saunders, Jaclyn K; Hawco, Nicholas J; Brosnahan, Michael; DiTullio, Giacomo R; Lamborg, Carl; McCrow, John P; Dupont, Chris L; Allen, Andrew E; Saito, Mak A.
Afiliación
  • Cohen NR; Marine Chemistry and Geochemistry Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA. ncohen@whoi.edu.
  • McIlvin MR; Marine Chemistry and Geochemistry Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA.
  • Moran DM; Marine Chemistry and Geochemistry Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA.
  • Held NA; Marine Chemistry and Geochemistry Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA.
  • Saunders JK; Marine Chemistry and Geochemistry Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA.
  • Hawco NJ; Department of Earth Science, University of Southern California, Los Angeles, CA, USA.
  • Brosnahan M; Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA.
  • DiTullio GR; Department of Biology, College of Charleston, Charleston, SC, USA.
  • Lamborg C; Ocean Sciences Department, University of California, Santa Cruz, Santa Cruz, CA, USA.
  • McCrow JP; Microbial & Environmental Genomics, J. Craig Venter Institute, La Jolla, CA, USA.
  • Dupont CL; Microbial & Environmental Genomics, J. Craig Venter Institute, La Jolla, CA, USA.
  • Allen AE; Microbial & Environmental Genomics, J. Craig Venter Institute, La Jolla, CA, USA. aallen@jcvi.org.
  • Saito MA; Scripps Institution of Oceanography, Integrative Oceanography Division, University of California, San Diego, La Jolla, CA, USA. aallen@jcvi.org.
Nat Microbiol ; 6(2): 173-186, 2021 02.
Article en En | MEDLINE | ID: mdl-33398100
Marine microeukaryotes play a fundamental role in biogeochemical cycling through the transfer of energy to higher trophic levels and vertical carbon transport. Despite their global importance, microeukaryote physiology, nutrient metabolism and contributions to carbon cycling across offshore ecosystems are poorly characterized. Here, we observed the prevalence of dinoflagellates along a 4,600-km meridional transect extending across the central Pacific Ocean, where oligotrophic gyres meet equatorial upwelling waters rich in macronutrients yet low in dissolved iron. A combined multi-omics and geochemical analysis provided a window into dinoflagellate metabolism across the transect, indicating a continuous taxonomic dinoflagellate community that shifted its functional transcriptome and proteome as it extended from the euphotic to the mesopelagic zone. In euphotic waters, multi-omics data suggested that a combination of trophic modes were utilized, while mesopelagic metabolism was marked by cytoskeletal investments and nutrient recycling. Rearrangement in nutrient metabolism was evident in response to variable nitrogen and iron regimes across the gradient, with no associated change in community assemblage. Total dinoflagellate proteins scaled with particulate carbon export, with both elevated in equatorial waters, suggesting a link between dinoflagellate abundance and total carbon flux. Dinoflagellates employ numerous metabolic strategies that enable broad occupation of central Pacific ecosystems and play a dual role in carbon transformation through both photosynthetic fixation in the euphotic zone and remineralization in the mesopelagic zone.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Agua de Mar / Dinoflagelados / Ciclo del Carbono Tipo de estudio: Risk_factors_studies Idioma: En Revista: Nat Microbiol Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Agua de Mar / Dinoflagelados / Ciclo del Carbono Tipo de estudio: Risk_factors_studies Idioma: En Revista: Nat Microbiol Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido