Proteomic and biogeochemical perspectives on cyanobacteria nutrient acquisition – Part 1: Zonal gradients in phosphorus and nitrogen acquisition and stress revealed by metaproteomes of <i>Prochlorococcus</i> and <i>Synechococcus</i>

Mahaffey, Claire; Held, Noelle A.; Kunde, Korinne; Davis, Clare; Wyatt, Neil; McIlvin, E. Matthew R.; Woodward, E. Malcolm S.; Wrightson, Lewis; Tagliabue, Alessandro; Lohan, Maeve C.; Saito, Mak

doi:10.5194/bg-23-905-2026

Articles | Volume 23, issue 3

https://doi.org/10.5194/bg-23-905-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-23-905-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 3

Research article

|

02 Feb 2026

Research article |

| 02 Feb 2026

Proteomic and biogeochemical perspectives on cyanobacteria nutrient acquisition – Part 1: Zonal gradients in phosphorus and nitrogen acquisition and stress revealed by metaproteomes of Prochlorococcus and Synechococcus

Claire Mahaffey, Noelle A. Held, Korinne Kunde, Clare Davis, Neil Wyatt, E. Matthew R. McIlvin, E. Malcolm S. Woodward, Lewis Wrightson, Alessandro Tagliabue, Maeve C. Lohan, and Mak Saito

Supplement

https://doi.org/10.5194/bg-23-905-2026-supplement

Data sets

Size-fractionated iron measurements from surface sampling and depth profiles along 22N in the North Atlantic during summer 2017 on cruise JC150 Korinna Kunde et al. https://doi.org/10.5285/8a1800cc-b6a6-30ea-e053-6c86abc0c934

Temperature, salinity, alkaline phosphatase activity, phytoplankton abundance, chlorophyll a, inorganic nutrients, dissolved organic phosphorus, and dissolved zinc concentrations from towed fish surface samples in the subtropical North Atlantic during summer 2017 on cruise GApr08/JC150 Claire Mahaffey et al. https://doi.org/10.5285/284a411e-2639-93de-e063-7086abc0e9d8

Chlorophyll a and nutrient concentrations, Alkaline Phosphatase Activity, phytoplankton abundance, and nitrogen fixation rates from cruise JC150 incubation experiment D, July-August 2017 Claire Mahaffey et al. https://doi.org/10.5285/1e9c4caa-b936-fc7c-e063-7086abc06ff6

Proteomics LC-MS data (Divergence in resource acquisition strategies and drivers of Prochlorococcus and Synechococcus abundance in the subtropical North Atlantic Ocean) N. A. Held and M. A. Saito https://doi.org/10.6019/PXD054252

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Short summary

Primary production helps regulate climate and is governed by nutrient availability. We used biogeochemical states and rates with proteomics to study how resource availability shapes metabolism in Prochlorococcus and Synechococcus. Both picocyanobacteria were phosphorus stressed in the western Atlantic, but Prochlorococcus was nitrogen, iron, zinc and cobalamin stressed in the east. Our findings provide species and ecotype level insights into oceanic nutrient acquisition and metabolism.