The effect of light stress on the release of volatile iodocarbons by three species of marine microalgae

  • Hughes C
  • Malin G
  • Nightingale P
 et al. 
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Abstract

We investigated the influence of high light stress on iodocarbon release by three species of marine phytoplankton from different algal classes: the prymnesiophyte Emiliania huxleyi, the prasinophyte Tetraselmis sp., and the diatom Thalassiosira pseudonana. Despite a pronounced decrease in the fluorescence-based maximum quantum yield for photosystem II (Fv/Fm), increased iodocarbon release relative to lower light controls was not observed in any of the experiments performed. These findings do not support the hypothesis that upper-ocean iodocarbon concentrations are influenced by light-induced algal stress.

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Authors

  • Claire Hughes

  • Gill Malin

  • Philip D. Nightingale

  • Peter S. Lisa

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