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Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic

Author

Listed:
  • T. J. Browning

    (GEOMAR Helmholtz Centre for Ocean Research)

  • E. P. Achterberg

    (GEOMAR Helmholtz Centre for Ocean Research)

  • J. C. Yong

    (GEOMAR Helmholtz Centre for Ocean Research)

  • I. Rapp

    (GEOMAR Helmholtz Centre for Ocean Research)

  • C. Utermann

    (Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research)

  • A. Engel

    (GEOMAR Helmholtz Centre for Ocean Research)

  • C. M. Moore

    (Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton)

Abstract

In certain regions of the predominantly nitrogen limited ocean, microbes can become co-limited by phosphorus. Within such regions, a proportion of the dissolved organic phosphorus pool can be accessed by microbes employing a variety of alkaline phosphatase (APase) enzymes. In contrast to the PhoA family of APases that utilize zinc as a cofactor, the recent discovery of iron as a cofactor in the more widespread PhoX and PhoD implies the potential for a biochemically dependant interplay between oceanic zinc, iron and phosphorus cycles. Here we demonstrate enhanced natural community APase activity following iron amendment within the low zinc and moderately low iron Western North Atlantic. In contrast we find no evidence for trace metal limitation of APase activity beneath the Saharan dust plume in the Eastern Atlantic. Such intermittent iron limitation of microbial phosphorus acquisition provides an additional facet in the argument for iron controlling the coupling between oceanic nitrogen and phosphorus cycles.

Suggested Citation

  • T. J. Browning & E. P. Achterberg & J. C. Yong & I. Rapp & C. Utermann & A. Engel & C. M. Moore, 2017. "Iron limitation of microbial phosphorus acquisition in the tropical North Atlantic," Nature Communications, Nature, vol. 8(1), pages 1-7, August.
  • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15465
    DOI: 10.1038/ncomms15465
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    Cited by:

    1. Guo-Wei Qiu & Wen-Can Zheng & Hao-Ming Yang & Yu-Ying Wang & Xing Qi & Da Huang & Guo-Zheng Dai & Huazhong Shi & Neil M. Price & Bao-Sheng Qiu, 2024. "Phosphorus deficiency alleviates iron limitation in Synechocystis cyanobacteria through direct PhoB-mediated gene regulation," Nature Communications, Nature, vol. 15(1), pages 1-14, December.
    2. Nils Giordano & Marinna Gaudin & Camille Trottier & Erwan Delage & Charlotte Nef & Chris Bowler & Samuel Chaffron, 2024. "Genome-scale community modelling reveals conserved metabolic cross-feedings in epipelagic bacterioplankton communities," Nature Communications, Nature, vol. 15(1), pages 1-15, December.
    3. Haoyu Jin & Chao Zhang & Siyu Meng & Qin Wang & Xiaokun Ding & Ling Meng & Yunyun Zhuang & Xiaohong Yao & Yang Gao & Feng Shi & Thomas Mock & Huiwang Gao, 2024. "Atmospheric deposition and river runoff stimulate the utilization of dissolved organic phosphorus in coastal seas," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    4. Thomas J. Browning & C. Mark Moore, 2023. "Global analysis of ocean phytoplankton nutrient limitation reveals high prevalence of co-limitation," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    5. Natalie R. Cohen & Arianna I. Krinos & Riss M. Kell & Rebecca J. Chmiel & Dawn M. Moran & Matthew R. McIlvin & Paloma Z. Lopez & Alexander J. Barth & Joshua P. Stone & Brianna A. Alanis & Eric W. Chan, 2024. "Microeukaryote metabolism across the western North Atlantic Ocean revealed through autonomous underwater profiling," Nature Communications, Nature, vol. 15(1), pages 1-19, December.

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