A coastal coccolithophore maintains pH homeostasis and switches carbon sources in response to ocean acidification
Ocean acidification will potentially inhibit calcification by marine organisms; however, the response of the most prolific ocean calcifiers, coccolithophores, to this perturbation remains under characterized. Here we report novel chemical constraints on the response of the widespread coccolithophore...
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ftpubmed:oai:pubmedcentral.nih.gov:6054640 2023-05-15T17:50:16+02:00 A coastal coccolithophore maintains pH homeostasis and switches carbon sources in response to ocean acidification Liu, Yi-Wei Eagle, Robert A. Aciego, Sarah M. Gilmore, Rosaleen E. Ries, Justin B. 2018-07-20 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6054640/ http://www.ncbi.nlm.nih.gov/pubmed/30030435 https://doi.org/10.1038/s41467-018-04463-7 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6054640/ http://www.ncbi.nlm.nih.gov/pubmed/30030435 http://dx.doi.org/10.1038/s41467-018-04463-7 © The Author(s) 2018 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/. CC-BY Article Text 2018 ftpubmed https://doi.org/10.1038/s41467-018-04463-7 2018-07-29T00:28:25Z Ocean acidification will potentially inhibit calcification by marine organisms; however, the response of the most prolific ocean calcifiers, coccolithophores, to this perturbation remains under characterized. Here we report novel chemical constraints on the response of the widespread coccolithophore species Ochrosphaera neapolitana (O. neapolitana) to changing-CO2 conditions. We cultured this algae under three pCO2-controlled seawater pH conditions (8.05, 8.22, and 8.33). Boron isotopes within the algae’s extracellular calcite plates show that this species maintains a constant pH at the calcification site, regardless of CO2-induced changes in pH of the surrounding seawater. Carbon and oxygen isotopes in the algae’s calcite plates and carbon isotopes in the algae’s organic matter suggest that O. neapolitana utilize carbon from a single internal dissolved inorganic carbon (DIC) pool for both calcification and photosynthesis, and that a greater proportion of dissolved CO2 relative to HCO3− enters the internal DIC pool under acidified conditions. These two observations may explain how O. neapolitana continues calcifying and photosynthesizing at a constant rate under different atmospheric-pCO2 conditions. Text Ocean acidification PubMed Central (PMC) Nature Communications 9 1 |
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Article Liu, Yi-Wei Eagle, Robert A. Aciego, Sarah M. Gilmore, Rosaleen E. Ries, Justin B. A coastal coccolithophore maintains pH homeostasis and switches carbon sources in response to ocean acidification |
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Article |
description |
Ocean acidification will potentially inhibit calcification by marine organisms; however, the response of the most prolific ocean calcifiers, coccolithophores, to this perturbation remains under characterized. Here we report novel chemical constraints on the response of the widespread coccolithophore species Ochrosphaera neapolitana (O. neapolitana) to changing-CO2 conditions. We cultured this algae under three pCO2-controlled seawater pH conditions (8.05, 8.22, and 8.33). Boron isotopes within the algae’s extracellular calcite plates show that this species maintains a constant pH at the calcification site, regardless of CO2-induced changes in pH of the surrounding seawater. Carbon and oxygen isotopes in the algae’s calcite plates and carbon isotopes in the algae’s organic matter suggest that O. neapolitana utilize carbon from a single internal dissolved inorganic carbon (DIC) pool for both calcification and photosynthesis, and that a greater proportion of dissolved CO2 relative to HCO3− enters the internal DIC pool under acidified conditions. These two observations may explain how O. neapolitana continues calcifying and photosynthesizing at a constant rate under different atmospheric-pCO2 conditions. |
format |
Text |
author |
Liu, Yi-Wei Eagle, Robert A. Aciego, Sarah M. Gilmore, Rosaleen E. Ries, Justin B. |
author_facet |
Liu, Yi-Wei Eagle, Robert A. Aciego, Sarah M. Gilmore, Rosaleen E. Ries, Justin B. |
author_sort |
Liu, Yi-Wei |
title |
A coastal coccolithophore maintains pH homeostasis and switches carbon sources in response to ocean acidification |
title_short |
A coastal coccolithophore maintains pH homeostasis and switches carbon sources in response to ocean acidification |
title_full |
A coastal coccolithophore maintains pH homeostasis and switches carbon sources in response to ocean acidification |
title_fullStr |
A coastal coccolithophore maintains pH homeostasis and switches carbon sources in response to ocean acidification |
title_full_unstemmed |
A coastal coccolithophore maintains pH homeostasis and switches carbon sources in response to ocean acidification |
title_sort |
coastal coccolithophore maintains ph homeostasis and switches carbon sources in response to ocean acidification |
publisher |
Nature Publishing Group UK |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6054640/ http://www.ncbi.nlm.nih.gov/pubmed/30030435 https://doi.org/10.1038/s41467-018-04463-7 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6054640/ http://www.ncbi.nlm.nih.gov/pubmed/30030435 http://dx.doi.org/10.1038/s41467-018-04463-7 |
op_rights |
© The Author(s) 2018 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/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-018-04463-7 |
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Nature Communications |
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9 |
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1 |
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1766156950840541184 |