Phosphorus Limitation Enhances Diazotroph Zinc Quotas
Trichodesmium spp. is a colonial diazotrophic cyanobacterium found in the oligotrophic (sub)tropical oceans, where dissolved inorganic phosphorus (DIP) can be depleted. To cope with low P concentrations, P can be scavenged from the dissolved organic P (DOP) pool. This requires the deployment of mult...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-04-01
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| Series: | Frontiers in Microbiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmicb.2022.853519/full |
| _version_ | 1818023533405536256 |
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| author | Xuechao Wang Thomas J. Browning Eric P. Achterberg Martha Gledhill |
| author_facet | Xuechao Wang Thomas J. Browning Eric P. Achterberg Martha Gledhill |
| author_sort | Xuechao Wang |
| collection | DOAJ |
| description | Trichodesmium spp. is a colonial diazotrophic cyanobacterium found in the oligotrophic (sub)tropical oceans, where dissolved inorganic phosphorus (DIP) can be depleted. To cope with low P concentrations, P can be scavenged from the dissolved organic P (DOP) pool. This requires the deployment of multiple enzymes activated by trace metals, potentially enhancing metal requirements under stronger P limitations. To test this, we grew Trichodesmium under trace-metal-controlled conditions, where P was supplied as either DIP or DOP (methylphosphonic acid). Mean steady-state biomass under the DOP treatment was only 40% of that grown under equivalent DIP supply, carbon normalized alkaline phosphorus activity was elevated 4-fold, and the zinc (Zn)–carbon ratio was elevated 3.5-fold. Our finding matches the known, dominant Zn requirement across a diversity of enzymes involved in P stress responses and supports an important interaction in the oceanic cycles of these two nutrients. |
| first_indexed | 2024-12-10T03:45:50Z |
| format | Article |
| id | doaj.art-c630e03d70774231be89fad87b9ffd86 |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-12-10T03:45:50Z |
| publishDate | 2022-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-c630e03d70774231be89fad87b9ffd862022-12-22T02:03:25ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2022-04-011310.3389/fmicb.2022.853519853519Phosphorus Limitation Enhances Diazotroph Zinc QuotasXuechao WangThomas J. BrowningEric P. AchterbergMartha GledhillTrichodesmium spp. is a colonial diazotrophic cyanobacterium found in the oligotrophic (sub)tropical oceans, where dissolved inorganic phosphorus (DIP) can be depleted. To cope with low P concentrations, P can be scavenged from the dissolved organic P (DOP) pool. This requires the deployment of multiple enzymes activated by trace metals, potentially enhancing metal requirements under stronger P limitations. To test this, we grew Trichodesmium under trace-metal-controlled conditions, where P was supplied as either DIP or DOP (methylphosphonic acid). Mean steady-state biomass under the DOP treatment was only 40% of that grown under equivalent DIP supply, carbon normalized alkaline phosphorus activity was elevated 4-fold, and the zinc (Zn)–carbon ratio was elevated 3.5-fold. Our finding matches the known, dominant Zn requirement across a diversity of enzymes involved in P stress responses and supports an important interaction in the oceanic cycles of these two nutrients.https://www.frontiersin.org/articles/10.3389/fmicb.2022.853519/fullTrichodesmiumdissolved organic phosphorusalkaline phosphatasezincironnitrogen fixation |
| spellingShingle | Xuechao Wang Thomas J. Browning Eric P. Achterberg Martha Gledhill Phosphorus Limitation Enhances Diazotroph Zinc Quotas Frontiers in Microbiology Trichodesmium dissolved organic phosphorus alkaline phosphatase zinc iron nitrogen fixation |
| title | Phosphorus Limitation Enhances Diazotroph Zinc Quotas |
| title_full | Phosphorus Limitation Enhances Diazotroph Zinc Quotas |
| title_fullStr | Phosphorus Limitation Enhances Diazotroph Zinc Quotas |
| title_full_unstemmed | Phosphorus Limitation Enhances Diazotroph Zinc Quotas |
| title_short | Phosphorus Limitation Enhances Diazotroph Zinc Quotas |
| title_sort | phosphorus limitation enhances diazotroph zinc quotas |
| topic | Trichodesmium dissolved organic phosphorus alkaline phosphatase zinc iron nitrogen fixation |
| url | https://www.frontiersin.org/articles/10.3389/fmicb.2022.853519/full |
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