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Single-cell measurements and modelling reveal substantial organic carbon acquisition by Prochlorococcus
Marine phytoplankton are responsible for about half of the photosynthesis on Earth. Many are mixotrophs, combining photosynthesis with heterotrophic assimilation of organic carbon, but the relative contribution of these two lifestyles is unclear. Here single-cell measurements reveal that Prochloroco...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9712107/ https://www.ncbi.nlm.nih.gov/pubmed/36329198 http://dx.doi.org/10.1038/s41564-022-01250-5 |
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author | Wu, Zhen Aharonovich, Dikla Roth-Rosenberg, Dalit Weissberg, Osnat Luzzatto-Knaan, Tal Vogts, Angela Zoccarato, Luca Eigemann, Falk Grossart, Hans-Peter Voss, Maren Follows, Michael J. Sher, Daniel |
author_facet | Wu, Zhen Aharonovich, Dikla Roth-Rosenberg, Dalit Weissberg, Osnat Luzzatto-Knaan, Tal Vogts, Angela Zoccarato, Luca Eigemann, Falk Grossart, Hans-Peter Voss, Maren Follows, Michael J. Sher, Daniel |
author_sort | Wu, Zhen |
collection | PubMed |
description | Marine phytoplankton are responsible for about half of the photosynthesis on Earth. Many are mixotrophs, combining photosynthesis with heterotrophic assimilation of organic carbon, but the relative contribution of these two lifestyles is unclear. Here single-cell measurements reveal that Prochlorococcus at the base of the photic zone in the Eastern Mediterranean Sea obtain only ~20% of carbon required for growth by photosynthesis. This is supported by laboratory-calibrated calculations based on photo-physiology parameters and compared with in situ growth rates. Agent-based simulations show that mixotrophic cells could grow tens of metres deeper than obligate photo-autotrophs, deepening the nutricline by ~20 m. Time series from the North Atlantic and North Pacific indicate that, during thermal stratification, on average 8–10% of the Prochlorococcus cells live without enough light to sustain obligate photo-autotrophic populations. Together, these results suggest that mixotrophy underpins the ecological success of a large fraction of the global Prochlorococcus population and its collective genetic diversity. |
format | Online Article Text |
id | pubmed-9712107 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-97121072022-12-02 Single-cell measurements and modelling reveal substantial organic carbon acquisition by Prochlorococcus Wu, Zhen Aharonovich, Dikla Roth-Rosenberg, Dalit Weissberg, Osnat Luzzatto-Knaan, Tal Vogts, Angela Zoccarato, Luca Eigemann, Falk Grossart, Hans-Peter Voss, Maren Follows, Michael J. Sher, Daniel Nat Microbiol Article Marine phytoplankton are responsible for about half of the photosynthesis on Earth. Many are mixotrophs, combining photosynthesis with heterotrophic assimilation of organic carbon, but the relative contribution of these two lifestyles is unclear. Here single-cell measurements reveal that Prochlorococcus at the base of the photic zone in the Eastern Mediterranean Sea obtain only ~20% of carbon required for growth by photosynthesis. This is supported by laboratory-calibrated calculations based on photo-physiology parameters and compared with in situ growth rates. Agent-based simulations show that mixotrophic cells could grow tens of metres deeper than obligate photo-autotrophs, deepening the nutricline by ~20 m. Time series from the North Atlantic and North Pacific indicate that, during thermal stratification, on average 8–10% of the Prochlorococcus cells live without enough light to sustain obligate photo-autotrophic populations. Together, these results suggest that mixotrophy underpins the ecological success of a large fraction of the global Prochlorococcus population and its collective genetic diversity. Nature Publishing Group UK 2022-11-03 2022 /pmc/articles/PMC9712107/ /pubmed/36329198 http://dx.doi.org/10.1038/s41564-022-01250-5 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Wu, Zhen Aharonovich, Dikla Roth-Rosenberg, Dalit Weissberg, Osnat Luzzatto-Knaan, Tal Vogts, Angela Zoccarato, Luca Eigemann, Falk Grossart, Hans-Peter Voss, Maren Follows, Michael J. Sher, Daniel Single-cell measurements and modelling reveal substantial organic carbon acquisition by Prochlorococcus |
title | Single-cell measurements and modelling reveal substantial organic carbon acquisition by Prochlorococcus |
title_full | Single-cell measurements and modelling reveal substantial organic carbon acquisition by Prochlorococcus |
title_fullStr | Single-cell measurements and modelling reveal substantial organic carbon acquisition by Prochlorococcus |
title_full_unstemmed | Single-cell measurements and modelling reveal substantial organic carbon acquisition by Prochlorococcus |
title_short | Single-cell measurements and modelling reveal substantial organic carbon acquisition by Prochlorococcus |
title_sort | single-cell measurements and modelling reveal substantial organic carbon acquisition by prochlorococcus |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9712107/ https://www.ncbi.nlm.nih.gov/pubmed/36329198 http://dx.doi.org/10.1038/s41564-022-01250-5 |
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