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UV radiation limited the expansion of cyanobacteria in early marine photic environments

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  • Aleksandra M. Mloszewska

    (University of Toronto
    University of Tübingen
    University of Alberta)

  • Devon B. Cole

    (Yale University)

  • Noah J. Planavsky

    (Yale University)

  • Andreas Kappler

    (University of Tübingen)

  • Denise S. Whitford

    (University of Alberta)

  • George W. Owttrim

    (University of Alberta)

  • Kurt. O Konhauser

    (University of Alberta)

Abstract

Prior to atmospheric oxygenation, ecosystems were exposed to higher UV radiation fluxes relative to modern surface environments. Iron–silica mineral coatings have been evoked as effective UV radiation shields in early terrestrial settings. Here we test whether similar protection applied to planktonic cyanobacteria within the Archean water column. Based on experiments done under Archean seawater conditions, we report that Fe(III)–Si-rich precipitates absorb up to 70% of incoming UV-C radiation, with a reduction of

Suggested Citation

  • Aleksandra M. Mloszewska & Devon B. Cole & Noah J. Planavsky & Andreas Kappler & Denise S. Whitford & George W. Owttrim & Kurt. O Konhauser, 2018. "UV radiation limited the expansion of cyanobacteria in early marine photic environments," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05520-x
    DOI: 10.1038/s41467-018-05520-x
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