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September 27, 2025Frontiers in Marine ScienceOpen Access

Biogeochemistry of phytoplankton RuBisCO in the ocean

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Authors

DTDaniel C. O. Thornton

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Overview

This research highlights differences in resource requirements and elemental composition of RuBisCO in phytoplankton, suggesting implications for carbon fixation.

Key Points

  • RuBisCO is the primary enzyme for carbon fixation in the ocean, playing a vital role in marine ecosystems.
  • The annual productivity of RuBisCO in the ocean is estimated between 0.725 and 0.890 Pg C yr -1, contributing significantly to global nitrogen cycling.
  • Rapid turnover of RuBisCO occurs every 6.6 to 8.2 days, indicating its dynamic role in oceanic carbon and nitrogen flux.
  • The dominance of eukaryotic phytoplankton during the Neoproterozoic led to increased resource requirements for RuBisCO synthesis.

Cite This Study

Daniel C. O. Thornton (2025) studied this question.

synapsesocial.com/papers/68d7be6ceebfec0fc5237ffehttps://doi.org/10.3389/fmars.2025.1653421
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Ancestral structure prediction reveals the conformational impact of the RuBisCO small subunit across time2024 · 2 citations
  2. 2Coevolution of RuBisCO in bryophytes: Insights into structural adaptation and terrestrial transition2025
  3. 3Abundant and metabolically flexible lineages within the SAR324 and gammaproteobacteria dominate the potential for rubisco-mediated carbon fixation in the dark ocean2024 · 2 citations
  4. 4Diversity in Rubisco Kinetics and CO2-Concentrating Mechanisms in Cyanobacteria.2026 · 3 citations
  5. 5RuBisCO activity assays: a simplified biochemical redox approach for in vitro quantification and an RNA sensor approach for in vivo monitoring2024 · 3 citations