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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Online Access: | https://archimer.ifremer.fr/doc/00452/56323/72132.pdf https://archimer.ifremer.fr/doc/00452/56323/72133.pdf https://doi.org/10.1038/s41467-018-04463-7 https://archimer.ifremer.fr/doc/00452/56323/ |
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ftarchimer:oai:archimer.ifremer.fr:56323 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 application/pdf https://archimer.ifremer.fr/doc/00452/56323/72132.pdf https://archimer.ifremer.fr/doc/00452/56323/72133.pdf https://doi.org/10.1038/s41467-018-04463-7 https://archimer.ifremer.fr/doc/00452/56323/ eng eng Nature Publishing Group https://archimer.ifremer.fr/doc/00452/56323/72132.pdf https://archimer.ifremer.fr/doc/00452/56323/72133.pdf doi:10.1038/s41467-018-04463-7 https://archimer.ifremer.fr/doc/00452/56323/ info:eu-repo/semantics/openAccess restricted use Nature Communications (2041-1723) (Nature Publishing Group), 2018-07 , Vol. 9 , P. 2857 (12p.) text Publication info:eu-repo/semantics/article 2018 ftarchimer https://doi.org/10.1038/s41467-018-04463-7 2021-09-23T20:31:29Z 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 pCO(2)-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-pCO(2) conditions. Article in Journal/Newspaper Ocean acidification Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Nature Communications 9 1 |
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Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
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ftarchimer |
language |
English |
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 pCO(2)-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-pCO(2) conditions. |
format |
Article in Journal/Newspaper |
author |
Liu, Yi-wei Eagle, Robert A. Aciego, Sarah M. Gilmore, Rosaleen E. Ries, Justin B. |
spellingShingle |
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 |
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 |
publishDate |
2018 |
url |
https://archimer.ifremer.fr/doc/00452/56323/72132.pdf https://archimer.ifremer.fr/doc/00452/56323/72133.pdf https://doi.org/10.1038/s41467-018-04463-7 https://archimer.ifremer.fr/doc/00452/56323/ |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Nature Communications (2041-1723) (Nature Publishing Group), 2018-07 , Vol. 9 , P. 2857 (12p.) |
op_relation |
https://archimer.ifremer.fr/doc/00452/56323/72132.pdf https://archimer.ifremer.fr/doc/00452/56323/72133.pdf doi:10.1038/s41467-018-04463-7 https://archimer.ifremer.fr/doc/00452/56323/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1038/s41467-018-04463-7 |
container_title |
Nature Communications |
container_volume |
9 |
container_issue |
1 |
_version_ |
1766156965956812800 |