A hidden sedimentary phosphate pool inside benthic foraminifera from the Peruvian upwelling region might nucleate phosphogenesis.

Glock, Nicolaas, Romero, D., Roy, A. S., Woehle, C., Dale, Andrew W. , Schönfeld, Joachim, Wein, T., Weissenbach, J. and Dagan, T. (2020) A hidden sedimentary phosphate pool inside benthic foraminifera from the Peruvian upwelling region might nucleate phosphogenesis. Open Access Geochimica et Cosmochimica Acta, 289 . pp. 14-32. DOI 10.1016/j.gca.2020.08.002.

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Supplementary data:


Phosphorus is essential for all living organisms, being a component of DNA and RNA and the energy carrier ATP. Phosphogenesis is a main sink of reactive phosphorus in the oceans. The present study reports the presence of intracellular dissolved inorganic phosphate (DIP) in benthic foraminifera from the Peruvian oxygen minimum zone (OMZ). The mean intracellular DIP concentration was 28 ± 3 mM; two to three orders-of-magnitude higher than in the ambient pore waters. The biological implications of the high intracellular phosphate enrichment may be related to the synthesis of polyphosphates or phospholipids for cell-membranes. The comparative genomics analysis of multiple species of foraminifera from different environments reveals that foraminifers encode the genes required for both phospholipid and polyphosphate metabolism. Rapid phosphogenesis and phosphorite formation associated with foraminiferal tests is hypothesized due to the pre-concentration of intracellular phosphate in these organisms. The results indicate that foraminifera may play a key and previously overlooked role in the global phosphorus cycle.

Document Type: Article
Keywords: Benthic foraminifera, P-Cycling, Phosphorites, Phosphate, Oxygen Minimum Zone, Peru
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-MG Marine Geosystems
OceanRep > SFB 754
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
OceanRep > SFB 754 > B7
OceanRep > SFB 754 > B1
Kiel University
Refereed: Yes
Open Access Journal?: No
Publisher: Elsevier
Projects: SFB754
Date Deposited: 14 Sep 2020 07:46
Last Modified: 08 Feb 2023 09:40
URI: https://oceanrep.geomar.de/id/eprint/50474

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