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Manganese and iron deficiency in Southern Ocean Phaeocystis antarctica populations revealed through taxon-specific protein indicators.
Wu, Miao; McCain, J Scott P; Rowland, Elden; Middag, Rob; Sandgren, Mats; Allen, Andrew E; Bertrand, Erin M.
Afiliación
  • Wu M; Department of Biology, Dalhousie University, 1355 Oxford Street PO Box 15000, Halifax, B3H 4R2, NS, Canada.
  • McCain JSP; Department of Molecular Sciences, Swedish University of Agricultural Sciences, Box 7015, 750 07, Uppsala, Sweden.
  • Rowland E; Department of Biology, Dalhousie University, 1355 Oxford Street PO Box 15000, Halifax, B3H 4R2, NS, Canada.
  • Middag R; Department of Biology, Dalhousie University, 1355 Oxford Street PO Box 15000, Halifax, B3H 4R2, NS, Canada.
  • Sandgren M; Department of Ocean Systems, NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University, P.O. Box 59, Den Burg, Texel, 1790 AB, Netherlands.
  • Allen AE; Department of Molecular Sciences, Swedish University of Agricultural Sciences, Box 7015, 750 07, Uppsala, Sweden.
  • Bertrand EM; Microbial and Environmental Genomics, J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA.
Nat Commun ; 10(1): 3582, 2019 08 08.
Article en En | MEDLINE | ID: mdl-31395884
Iron and light are recognized as limiting factors controlling Southern Ocean phytoplankton growth. Recent field-based evidence suggests, however, that manganese availability may also play a role. Here we examine the influence of iron and manganese on protein expression and physiology in Phaeocystis antarctica, a key Antarctic primary producer. We provide taxon-specific proteomic evidence to show that in-situ Southern Ocean Phaeocystis populations regularly experience stress due to combined low manganese and iron availability. In culture, combined low iron and manganese induce large-scale changes in the Phaeocystis proteome and result in reorganization of the photosynthetic apparatus. Natural Phaeocystis populations produce protein signatures indicating late-season manganese and iron stress, consistent with concurrently observed stimulation of chlorophyll production upon additions of manganese or iron. These results implicate manganese as an important driver of Southern Ocean productivity and demonstrate the utility of peptide mass spectrometry for identifying drivers of incomplete macronutrient consumption.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fitoplancton / Agua de Mar / Nutrientes / Haptophyta Tipo de estudio: Prognostic_studies Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2019 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Reino Unido
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fitoplancton / Agua de Mar / Nutrientes / Haptophyta Tipo de estudio: Prognostic_studies Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2019 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Reino Unido