Flavodoxin as an in situ marker for iron stress in phytoplankton

  title={Flavodoxin as an in situ marker for iron stress in phytoplankton},
  author={Julie La Roche and Philip W Boyd and Robert Michael L. McKay and Richard J Geider},
A fundamental issue in marine science is the identification of the factors controlling biological uptake of CO2, in high-nitrate, low-chlorophyll regions1–10. A recent in situ iron fertilization experiment demonstrated that iron limitation is responsible for low phytoplankton stocks in the equatorial Pacific4. Here we show that flavodoxin, a biochemical marker of iron limitation, can be used to map the degree of iron stress in natural populations. Flavodoxin assays along a 900-km east-west… CONTINUE READING

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