Articles | Volume 17, issue 9
https://doi.org/10.5194/bg-17-2537-2020
https://doi.org/10.5194/bg-17-2537-2020
Research article
 | 
12 May 2020
Research article |  | 12 May 2020

Co-occurrence of Fe and P stress in natural populations of the marine diazotroph Trichodesmium

Noelle A. Held, Eric A. Webb, Matthew M. McIlvin, David A. Hutchins, Natalie R. Cohen, Dawn M. Moran, Korinna Kunde, Maeve C. Lohan, Claire Mahaffey, E. Malcolm S. Woodward, and Mak A. Saito

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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (16 Mar 2020) by Koji Suzuki
AR by Mak Saito on behalf of the Authors (16 Mar 2020)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (19 Mar 2020) by Koji Suzuki
RR by Anonymous Referee #1 (19 Mar 2020)
ED: Publish subject to technical corrections (30 Mar 2020) by Koji Suzuki
AR by Mak Saito on behalf of the Authors (02 Apr 2020)  Author's response   Manuscript 

Post-review adjustments

AA: Author's adjustment | EA: Editor approval
AA by Mak Saito on behalf of the Authors (08 May 2020)   Author's adjustment   Manuscript
EA: Adjustments approved (08 May 2020) by Koji Suzuki
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Short summary
Trichodesmium is a globally important marine nitrogen fixer that stimulates primary production in the surface ocean. We surveyed metaproteomes of Trichodesmium populations across the North Atlantic and other oceans, and we found that they experience simultaneous phosphate and iron stress because of the biophysical limits of nutrient uptake. Importantly, nitrogenase was most abundant during co-stress, indicating the potential importance of this phenotype to global nitrogen and carbon cycling.
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