Data_Sheet_1_Effects of Ocean Acidification on Carbon and Nitrogen Fixation in the Hermatypic Coral Galaxea fascicularis.docx
The supply of metabolites from symbionts to scleractinian corals is crucial to coral health. Members of the Symbiodiniaceae can enhance coral calcification by providing photosynthetically fixed carbon (PFC) and energy, whereas dinitrogen (N 2 )-fixing bacteria can provide additional nutrients such a...
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ftsmithonian:oai:figshare.com:article/14463492 2023-05-15T17:50:12+02:00 Data_Sheet_1_Effects of Ocean Acidification on Carbon and Nitrogen Fixation in the Hermatypic Coral Galaxea fascicularis.docx Xinqing Zheng (9448779) Chenying Wang (843455) Huaxia Sheng (10683891) Gaofeng Niu (10683894) Xu Dong (366886) Lingling Yuan (2870396) Tuo Shi (3137919) 2021-04-22T04:42:32Z https://doi.org/10.3389/fmars.2021.644965.s001 unknown https://figshare.com/articles/dataset/Data_Sheet_1_Effects_of_Ocean_Acidification_on_Carbon_and_Nitrogen_Fixation_in_the_Hermatypic_Coral_Galaxea_fascicularis_docx/14463492 doi:10.3389/fmars.2021.644965.s001 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering ocean acidification coral calcification carbon fixation nitrogen fixation symbiosis photosynthesis Dataset 2021 ftsmithonian https://doi.org/10.3389/fmars.2021.644965.s001 2021-05-05T17:48:20Z The supply of metabolites from symbionts to scleractinian corals is crucial to coral health. Members of the Symbiodiniaceae can enhance coral calcification by providing photosynthetically fixed carbon (PFC) and energy, whereas dinitrogen (N 2 )-fixing bacteria can provide additional nutrients such as diazotrophically-derived nitrogen (DDN) that sustain coral productivity especially when alternative external nitrogen sources are scarce. How these mutualistic associations benefit corals in the future acidifying ocean is not well understood. In this study, we investigated the possible effects of ocean acidification (OA; pHs 7.7 and 7.4 vs. 8.1) on calcification in the hermatypic coral Galaxea fascicularis with respect to PFC and DDN assimilation. Our measurements based on isotopic tracing showed no significant differences in the assimilation of PFC among different pH treatments, but the assimilation of DDN decreased significantly after 28 days of stress at pH 7.4. The decreased DDN assimilation suggests a nitrogenous nutrient deficiency in the coral holotiont, potentially leading to reduced coral calcification and resilience to bleaching and other stressful events. This contrasting impact of OA on carbon and N flux demonstrates the flexibility of G. fascicularis in coping with OA, apparently by sustaining a largely undamaged photosystem at the expense of N 2 fixation machinery, which competes with coral calcification for energy from photosynthesis. These findings shed new light on the critically important but more vulnerable N cycling in hospite, and on the trade-off between coral hosts and symbionts in response to future climate change. Dataset Ocean acidification Unknown |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftsmithonian |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering ocean acidification coral calcification carbon fixation nitrogen fixation symbiosis photosynthesis |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering ocean acidification coral calcification carbon fixation nitrogen fixation symbiosis photosynthesis Xinqing Zheng (9448779) Chenying Wang (843455) Huaxia Sheng (10683891) Gaofeng Niu (10683894) Xu Dong (366886) Lingling Yuan (2870396) Tuo Shi (3137919) Data_Sheet_1_Effects of Ocean Acidification on Carbon and Nitrogen Fixation in the Hermatypic Coral Galaxea fascicularis.docx |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering ocean acidification coral calcification carbon fixation nitrogen fixation symbiosis photosynthesis |
description |
The supply of metabolites from symbionts to scleractinian corals is crucial to coral health. Members of the Symbiodiniaceae can enhance coral calcification by providing photosynthetically fixed carbon (PFC) and energy, whereas dinitrogen (N 2 )-fixing bacteria can provide additional nutrients such as diazotrophically-derived nitrogen (DDN) that sustain coral productivity especially when alternative external nitrogen sources are scarce. How these mutualistic associations benefit corals in the future acidifying ocean is not well understood. In this study, we investigated the possible effects of ocean acidification (OA; pHs 7.7 and 7.4 vs. 8.1) on calcification in the hermatypic coral Galaxea fascicularis with respect to PFC and DDN assimilation. Our measurements based on isotopic tracing showed no significant differences in the assimilation of PFC among different pH treatments, but the assimilation of DDN decreased significantly after 28 days of stress at pH 7.4. The decreased DDN assimilation suggests a nitrogenous nutrient deficiency in the coral holotiont, potentially leading to reduced coral calcification and resilience to bleaching and other stressful events. This contrasting impact of OA on carbon and N flux demonstrates the flexibility of G. fascicularis in coping with OA, apparently by sustaining a largely undamaged photosystem at the expense of N 2 fixation machinery, which competes with coral calcification for energy from photosynthesis. These findings shed new light on the critically important but more vulnerable N cycling in hospite, and on the trade-off between coral hosts and symbionts in response to future climate change. |
format |
Dataset |
author |
Xinqing Zheng (9448779) Chenying Wang (843455) Huaxia Sheng (10683891) Gaofeng Niu (10683894) Xu Dong (366886) Lingling Yuan (2870396) Tuo Shi (3137919) |
author_facet |
Xinqing Zheng (9448779) Chenying Wang (843455) Huaxia Sheng (10683891) Gaofeng Niu (10683894) Xu Dong (366886) Lingling Yuan (2870396) Tuo Shi (3137919) |
author_sort |
Xinqing Zheng (9448779) |
title |
Data_Sheet_1_Effects of Ocean Acidification on Carbon and Nitrogen Fixation in the Hermatypic Coral Galaxea fascicularis.docx |
title_short |
Data_Sheet_1_Effects of Ocean Acidification on Carbon and Nitrogen Fixation in the Hermatypic Coral Galaxea fascicularis.docx |
title_full |
Data_Sheet_1_Effects of Ocean Acidification on Carbon and Nitrogen Fixation in the Hermatypic Coral Galaxea fascicularis.docx |
title_fullStr |
Data_Sheet_1_Effects of Ocean Acidification on Carbon and Nitrogen Fixation in the Hermatypic Coral Galaxea fascicularis.docx |
title_full_unstemmed |
Data_Sheet_1_Effects of Ocean Acidification on Carbon and Nitrogen Fixation in the Hermatypic Coral Galaxea fascicularis.docx |
title_sort |
data_sheet_1_effects of ocean acidification on carbon and nitrogen fixation in the hermatypic coral galaxea fascicularis.docx |
publishDate |
2021 |
url |
https://doi.org/10.3389/fmars.2021.644965.s001 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://figshare.com/articles/dataset/Data_Sheet_1_Effects_of_Ocean_Acidification_on_Carbon_and_Nitrogen_Fixation_in_the_Hermatypic_Coral_Galaxea_fascicularis_docx/14463492 doi:10.3389/fmars.2021.644965.s001 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2021.644965.s001 |
_version_ |
1766156861821681664 |