Biogeosciences
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Articles | Volume 23, issue 3
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

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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.
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