Photosynthate translocation increases in response to low seawater pH in a coral-dinoflagellate symbiosis
This study has examined the effect of low seawater pH values (induced by an increased CO2 partial pressure) on the rates of photosynthesis, as well as on the carbon budget and carbon translocation in the scleractinian coral species Stylophora pistillata, using a new model based on 13C labelling of t...
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Language: | English |
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PANGAEA
2013
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.831725 https://doi.org/10.1594/PANGAEA.831725 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.831725 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Alkalinity total Animalia Aragonite saturation state Benthic animals Benthos Bicarbonate ion Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon incorporated inorganic dissolved lost translocated Carbonate ion Carbonate system computation flag Carbon dioxide Cell density Chlorophyll a Chlorophyll c2 Cnidaria Coast and continental shelf Containers and aquaria (20-1000 L or < 1 m**2) Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gross photosynthesis rate Laboratory experiment OA-ICC Ocean Acidification International Coordination Centre Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Percentage pH Potentiometric Primary production/Photosynthesis Proteins Red Sea Respiration Respiration rate Salinity Sample ID Single species Species Stylophora pistillata Temperate |
spellingShingle |
Alkalinity total Animalia Aragonite saturation state Benthic animals Benthos Bicarbonate ion Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon incorporated inorganic dissolved lost translocated Carbonate ion Carbonate system computation flag Carbon dioxide Cell density Chlorophyll a Chlorophyll c2 Cnidaria Coast and continental shelf Containers and aquaria (20-1000 L or < 1 m**2) Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gross photosynthesis rate Laboratory experiment OA-ICC Ocean Acidification International Coordination Centre Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Percentage pH Potentiometric Primary production/Photosynthesis Proteins Red Sea Respiration Respiration rate Salinity Sample ID Single species Species Stylophora pistillata Temperate Tremblay, Pascale Fine, M Maguer, Jean-François Grover, Renaud Ferrier-Pagès, Christine Photosynthate translocation increases in response to low seawater pH in a coral-dinoflagellate symbiosis |
topic_facet |
Alkalinity total Animalia Aragonite saturation state Benthic animals Benthos Bicarbonate ion Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon incorporated inorganic dissolved lost translocated Carbonate ion Carbonate system computation flag Carbon dioxide Cell density Chlorophyll a Chlorophyll c2 Cnidaria Coast and continental shelf Containers and aquaria (20-1000 L or < 1 m**2) Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gross photosynthesis rate Laboratory experiment OA-ICC Ocean Acidification International Coordination Centre Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Percentage pH Potentiometric Primary production/Photosynthesis Proteins Red Sea Respiration Respiration rate Salinity Sample ID Single species Species Stylophora pistillata Temperate |
description |
This study has examined the effect of low seawater pH values (induced by an increased CO2 partial pressure) on the rates of photosynthesis, as well as on the carbon budget and carbon translocation in the scleractinian coral species Stylophora pistillata, using a new model based on 13C labelling of the photosynthetic products. Symbiont photosynthesis contributes to a large part of the carbon acquisition in tropical coral species, and it is thus important to know how environmental changes affect this carbon acquisition and allocation. For this purpose, nubbins of S. pistillata were maintained for six months at two pHTs (8.1 and 7.2, by bubbling seawater with CO2). The lowest pH value was used to tackle how seawater pH impacts the carbon budget of a scleractinian coral. Rates of photosynthesis and respiration of the symbiotic association and of isolated symbionts were assessed at each pH. The fate of 13C photosynthates was then followed in the symbionts and the coral host for 48 h. Nubbins maintained at pHT 7.2 presented a lower areal symbiont concentration, and lower areal rates of gross photosynthesis and carbon incorporation compared to nubbins maintained at pHT 8.1. The total carbon acquisition was thus lower under low pH. However, the total percentage of carbon translocated to the host as well as the amount of carbon translocated per symbiont cell were significantly higher under pHT 7.2 than under pHT 8.1 (70% at pHT 7.2 vs. 60% at pHT 8.1), such that the total amount of photosynthetic carbon received by the coral host was equivalent under both pHs (5.5 to 6.1 µg C/cm**2/h). Although the carbon budget of the host was unchanged, symbionts acquired less carbon for their own needs (0.6 compared to 1.8 µg C/cm**2/h), explaining the overall decrease in symbiont concentration at low pH. In the long term, such decrease in symbiont concentration might severely affect the carbon budget of the symbiotic association. |
format |
Dataset |
author |
Tremblay, Pascale Fine, M Maguer, Jean-François Grover, Renaud Ferrier-Pagès, Christine |
author_facet |
Tremblay, Pascale Fine, M Maguer, Jean-François Grover, Renaud Ferrier-Pagès, Christine |
author_sort |
Tremblay, Pascale |
title |
Photosynthate translocation increases in response to low seawater pH in a coral-dinoflagellate symbiosis |
title_short |
Photosynthate translocation increases in response to low seawater pH in a coral-dinoflagellate symbiosis |
title_full |
Photosynthate translocation increases in response to low seawater pH in a coral-dinoflagellate symbiosis |
title_fullStr |
Photosynthate translocation increases in response to low seawater pH in a coral-dinoflagellate symbiosis |
title_full_unstemmed |
Photosynthate translocation increases in response to low seawater pH in a coral-dinoflagellate symbiosis |
title_sort |
photosynthate translocation increases in response to low seawater ph in a coral-dinoflagellate symbiosis |
publisher |
PANGAEA |
publishDate |
2013 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.831725 https://doi.org/10.1594/PANGAEA.831725 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Supplement to: Tremblay, Pascale; Fine, M; Maguer, Jean-François; Grover, Renaud; Ferrier-Pagès, Christine (2013): Photosynthate translocation increases in response to low seawater pH in a coral–dinoflagellate symbiosis. Biogeosciences, 10(6), 3997-4007, https://doi.org/10.5194/bg-10-3997-2013 |
op_relation |
Lavigne, Héloïse; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4 [webpage]. https://cran.r-project.org/package=seacarb https://doi.pangaea.de/10.1594/PANGAEA.831725 https://doi.org/10.1594/PANGAEA.831725 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.83172510.5194/bg-10-3997-2013 |
_version_ |
1810469869957677056 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.831725 2024-09-15T18:28:30+00:00 Photosynthate translocation increases in response to low seawater pH in a coral-dinoflagellate symbiosis Tremblay, Pascale Fine, M Maguer, Jean-François Grover, Renaud Ferrier-Pagès, Christine 2013 text/tab-separated-values, 1033 data points https://doi.pangaea.de/10.1594/PANGAEA.831725 https://doi.org/10.1594/PANGAEA.831725 en eng PANGAEA Lavigne, Héloïse; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4 [webpage]. https://cran.r-project.org/package=seacarb https://doi.pangaea.de/10.1594/PANGAEA.831725 https://doi.org/10.1594/PANGAEA.831725 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Tremblay, Pascale; Fine, M; Maguer, Jean-François; Grover, Renaud; Ferrier-Pagès, Christine (2013): Photosynthate translocation increases in response to low seawater pH in a coral–dinoflagellate symbiosis. Biogeosciences, 10(6), 3997-4007, https://doi.org/10.5194/bg-10-3997-2013 Alkalinity total Animalia Aragonite saturation state Benthic animals Benthos Bicarbonate ion Calcite saturation state Calculated using CO2SYS Calculated using seacarb after Nisumaa et al. (2010) Carbon incorporated inorganic dissolved lost translocated Carbonate ion Carbonate system computation flag Carbon dioxide Cell density Chlorophyll a Chlorophyll c2 Cnidaria Coast and continental shelf Containers and aquaria (20-1000 L or < 1 m**2) Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gross photosynthesis rate Laboratory experiment OA-ICC Ocean Acidification International Coordination Centre Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Percentage pH Potentiometric Primary production/Photosynthesis Proteins Red Sea Respiration Respiration rate Salinity Sample ID Single species Species Stylophora pistillata Temperate dataset 2013 ftpangaea https://doi.org/10.1594/PANGAEA.83172510.5194/bg-10-3997-2013 2024-07-24T02:31:32Z This study has examined the effect of low seawater pH values (induced by an increased CO2 partial pressure) on the rates of photosynthesis, as well as on the carbon budget and carbon translocation in the scleractinian coral species Stylophora pistillata, using a new model based on 13C labelling of the photosynthetic products. Symbiont photosynthesis contributes to a large part of the carbon acquisition in tropical coral species, and it is thus important to know how environmental changes affect this carbon acquisition and allocation. For this purpose, nubbins of S. pistillata were maintained for six months at two pHTs (8.1 and 7.2, by bubbling seawater with CO2). The lowest pH value was used to tackle how seawater pH impacts the carbon budget of a scleractinian coral. Rates of photosynthesis and respiration of the symbiotic association and of isolated symbionts were assessed at each pH. The fate of 13C photosynthates was then followed in the symbionts and the coral host for 48 h. Nubbins maintained at pHT 7.2 presented a lower areal symbiont concentration, and lower areal rates of gross photosynthesis and carbon incorporation compared to nubbins maintained at pHT 8.1. The total carbon acquisition was thus lower under low pH. However, the total percentage of carbon translocated to the host as well as the amount of carbon translocated per symbiont cell were significantly higher under pHT 7.2 than under pHT 8.1 (70% at pHT 7.2 vs. 60% at pHT 8.1), such that the total amount of photosynthetic carbon received by the coral host was equivalent under both pHs (5.5 to 6.1 µg C/cm**2/h). Although the carbon budget of the host was unchanged, symbionts acquired less carbon for their own needs (0.6 compared to 1.8 µg C/cm**2/h), explaining the overall decrease in symbiont concentration at low pH. In the long term, such decrease in symbiont concentration might severely affect the carbon budget of the symbiotic association. Dataset Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science |