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ma=86400 The microbial phosphorus cycle in aquatic ecosystems | Nature Reviews Microbiology
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The microbial phosphorus cycle in aquatic ecosystems

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Abstract

Phosphorus is an essential element for life, and phosphorus cycling is crucial to planetary habitability. In aquatic environments, microorganisms are a major component of phosphorus cycling and rapidly transform the diverse chemical forms of phosphorus through various uptake, assimilation and release pathways. Recent discoveries have revealed a more dynamic and complex aquatic microbial phosphorus cycle than previously understood. Some microorganisms have been shown to use and produce new phosphorus compounds, including those in reduced forms. New findings have also raised numerous unanswered questions that warrant further investigation. There is an expanding influence of human activity on aquatic ecosystems. Advancements in understanding the phosphorus biogeochemistry of evolving aquatic environments offer a unique opportunity to comprehend, anticipate and mitigate the effect of human activities. In this Review, I discuss the wealth of new aquatic phosphorus cycle research, spanning disciplines from omics and physiology to global biogeochemical modelling, with a focus on the current comprehension of how aquatic microorganisms sense, transport, assimilate, store, produce and release phosphorus. Of note, I delve into cellular phosphorus allocation, an underexplored topic with wide-ranging implications for energy and element flux in aquatic ecosystems.

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Fig. 1: The global phosphorus cycle.
Fig. 2: The microbial aquatic phosphorus cycle.
Fig. 3: Cellular acquisition of various phosphorus species.
Fig. 4: Phosphorus allocation in microbial cells.
Fig. 5: Anthropogenic effects on the aquatic phosphorus cycle.

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Acknowledgements

The author thanks J. Diaz for providing invaluable feedback on an earlier version of this Review, and C.W. Hamilton for assistance with Figs. 1 and 5. The author's work was supported by the National Science Foundation (2245249).

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Duhamel, S. The microbial phosphorus cycle in aquatic ecosystems. Nat Rev Microbiol (2024). https://doi.org/10.1038/s41579-024-01119-w

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