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Differences in the sensitivity to Cu and ligand production of coastal vs offshore strains of Emiliania huxleyi.

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Title: Differences in the sensitivity to Cu and ligand production of coastal vs offshore strains of Emiliania huxleyi.
Authors: Echeveste, Pedro1,2,3 pedro.echeveste@uantof.cl, Croot, Peter4, von Dassow, Peter1,2
Source: Science of the Total Environment. Jun2018, Vol. 625, p1673-1680. 8p.
Subjects: Phytoplankton, Copper, Coccolithus huxleyi, Ligands (Chemistry), Atmospheric deposition, Voltammetry, Trace metals
Abstract: Copper is an essential trace metal for different physiological processes in phytoplankton, being either a limiting or toxic element depending on its bioavailability, which may induce local physiological adaptations. Atmospheric Cu deposition to the oceans can negatively impact phytoplankton growth, with the most Cu-sensitive phytoplankton exhibiting differences based on coastal vs oceanic origin. The goal of this work was to analyze sensitivity to Cu toxicity of the cosmopolitan marine calcifying phytoplankton, Emiliania huxleyi , exploring what factors determine intraspecific variability in sensitivity. We compared 17 strains isolated from coastal and open ocean waters of the Eastern South Pacific (ESP), the Mediterranean Sea, and the Tasman Sea. Offshore strains were as sensitive to Cu than coastal strains. Sensitivity to Cu was explained well by predicted depositional inputs of atmospheric Cu in the ESP both for coastal and offshore strains, but not when considered globally. The variability in Cu-sensitivity was also due to the production of organic Cu-ligands (CL), being the most productive strains the most tolerant to Cu at constitutive levels. When exposed to 100 nM Cu, E. huxleyi produced significantly higher amounts of CL, especially coastal strains, but CL production did not correlate to observed EC50s. [ABSTRACT FROM AUTHOR]
Copyright of Science of the Total Environment is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 128164650
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Differences in the sensitivity to Cu and ligand production of coastal vs offshore strains of Emiliania huxleyi.
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  Data: <searchLink fieldCode="JN" term="%22Science+of+the+Total+Environment%22">Science of the Total Environment</searchLink>. Jun2018, Vol. 625, p1673-1680. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Phytoplankton%22">Phytoplankton</searchLink><br /><searchLink fieldCode="DE" term="%22Copper%22">Copper</searchLink><br /><searchLink fieldCode="DE" term="%22Coccolithus+huxleyi%22">Coccolithus huxleyi</searchLink><br /><searchLink fieldCode="DE" term="%22Ligands+%28Chemistry%29%22">Ligands (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+deposition%22">Atmospheric deposition</searchLink><br /><searchLink fieldCode="DE" term="%22Voltammetry%22">Voltammetry</searchLink><br /><searchLink fieldCode="DE" term="%22Trace+metals%22">Trace metals</searchLink>
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  Label: Abstract
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  Data: Copper is an essential trace metal for different physiological processes in phytoplankton, being either a limiting or toxic element depending on its bioavailability, which may induce local physiological adaptations. Atmospheric Cu deposition to the oceans can negatively impact phytoplankton growth, with the most Cu-sensitive phytoplankton exhibiting differences based on coastal vs oceanic origin. The goal of this work was to analyze sensitivity to Cu toxicity of the cosmopolitan marine calcifying phytoplankton, Emiliania huxleyi , exploring what factors determine intraspecific variability in sensitivity. We compared 17 strains isolated from coastal and open ocean waters of the Eastern South Pacific (ESP), the Mediterranean Sea, and the Tasman Sea. Offshore strains were as sensitive to Cu than coastal strains. Sensitivity to Cu was explained well by predicted depositional inputs of atmospheric Cu in the ESP both for coastal and offshore strains, but not when considered globally. The variability in Cu-sensitivity was also due to the production of organic Cu-ligands (CL), being the most productive strains the most tolerant to Cu at constitutive levels. When exposed to 100 nM Cu, E. huxleyi produced significantly higher amounts of CL, especially coastal strains, but CL production did not correlate to observed EC50s. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Science of the Total Environment is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.scitotenv.2017.10.050
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      – Code: eng
        Text: English
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        PageCount: 8
        StartPage: 1673
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      – SubjectFull: Phytoplankton
        Type: general
      – SubjectFull: Copper
        Type: general
      – SubjectFull: Coccolithus huxleyi
        Type: general
      – SubjectFull: Ligands (Chemistry)
        Type: general
      – SubjectFull: Atmospheric deposition
        Type: general
      – SubjectFull: Voltammetry
        Type: general
      – SubjectFull: Trace metals
        Type: general
    Titles:
      – TitleFull: Differences in the sensitivity to Cu and ligand production of coastal vs offshore strains of Emiliania huxleyi.
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            NameFull: Echeveste, Pedro
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            NameFull: Croot, Peter
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            NameFull: von Dassow, Peter
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            – D: 01
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              Text: Jun2018
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              Y: 2018
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              Value: 625
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