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Distributions of particulate Heme b in the Atlantic and Southern Oceans— Implications for electron transport in phytoplankton
Gledhill, M.; Achterberg, E.P.; Honey, D.J.; Nielsdottir, M.C.; Rijkenberg, M.J.A. (2013). Distributions of particulate Heme b in the Atlantic and Southern Oceans— Implications for electron transport in phytoplankton. Global Biogeochem. Cycles 27(4): 1072–1082. hdl.handle.net/10.1002/2013GB004639
In: Global Biogeochemical Cycles. American Geophysical Union: Washington, DC. ISSN 0886-6236; e-ISSN 1944-9224, meer
Peer reviewed article  

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Author keywords
    iron; phytoplankton; physiology; nutrients; biogenic particulate material; Atlantic Ocean

Auteurs  Top 
  • Gledhill, M.
  • Achterberg, E.P.
  • Honey, D.J.
  • Nielsdottir, M.C.
  • Rijkenberg, M.J.A., meer

Abstract
    Concentrations of heme b, the iron-containing component of b-type hemoproteins, ranged from? 500). High chl a:heme b ratios resulted from relative decreases in heme b, suggesting proteins such as cytochrome b6f, the core complex of photosystem II, and eukaryotic nitrate reductase were depleted relative to proteins containing chlorophyll such as the eukaryotic light-harvesting antenna. Relative variations in heme b, particulate organic carbon, and chl a can thus be indicative of a physiological response of the phytoplankton community to the prevailing growth conditions, within the context of large-scale changes in phytoplankton community composition.

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