Diurnally Fluctuating pCO2 Modifies the Physiological Responses of Coral Recruits Under Ocean Acidification
Diurnal pCO2 fluctuations have the potential to modulate the biological impact of ocean acidification (OA) on reef calcifiers, yet little is known about the physiological and biochemical responses of scleractinian corals to fluctuating carbonate chemistry under OA. Here, we exposed newly settled Poc...
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ftpubmed:oai:pubmedcentral.nih.gov:6340097 2023-05-15T17:50:33+02:00 Diurnally Fluctuating pCO2 Modifies the Physiological Responses of Coral Recruits Under Ocean Acidification Jiang, Lei Guo, Ya-Juan Zhang, Fang Zhang, Yu-Yang McCook, Laurence John Yuan, Xiang-Cheng Lei, Xin-Ming Zhou, Guo-Wei Guo, Ming-Lan Cai, Lin Lian, Jian-Sheng Qian, Pei-Yuan Huang, Hui 2019-01-11 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6340097/ http://www.ncbi.nlm.nih.gov/pubmed/30692940 https://doi.org/10.3389/fphys.2018.01952 en eng Frontiers Media S.A. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6340097/ http://www.ncbi.nlm.nih.gov/pubmed/30692940 http://dx.doi.org/10.3389/fphys.2018.01952 Copyright © 2019 Jiang, Guo, Zhang, Zhang, McCook, Yuan, Lei, Zhou, Guo, Cai, Lian, Qian and Huang. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. CC-BY Physiology Text 2019 ftpubmed https://doi.org/10.3389/fphys.2018.01952 2019-02-03T01:31:02Z Diurnal pCO2 fluctuations have the potential to modulate the biological impact of ocean acidification (OA) on reef calcifiers, yet little is known about the physiological and biochemical responses of scleractinian corals to fluctuating carbonate chemistry under OA. Here, we exposed newly settled Pocillopora damicornis for 7 days to ambient pCO2, steady and elevated pCO2 (stable OA) and diurnally fluctuating pCO2 under future OA scenario (fluctuating OA). We measured the photo-physiology, growth (lateral growth, budding and calcification), oxidative stress and activities of carbonic anhydrase (CA), Ca-ATPase and Mg-ATPase. Results showed that while OA enhanced the photochemical performance of in hospite symbionts, it also increased catalase activity and lipid peroxidation. Furthermore, both OA treatments altered the activities of host and symbiont CA, suggesting functional changes in the uptake of dissolved inorganic carbon (DIC) for photosynthesis and calcification. Most importantly, only the fluctuating OA treatment resulted in a slight drop in calcification with concurrent up-regulation of Ca-ATPase and Mg-ATPase, implying increased energy expenditure on calcification. Consequently, asexual budding rates decreased by 50% under fluctuating OA. These results suggest that diel pCO2 oscillations could modify the physiological responses and potentially alter the energy budget of coral recruits under future OA, and that fluctuating OA is more energetically expensive for the maintenance of coral recruits than stable OA. Text Ocean acidification PubMed Central (PMC) Frontiers in Physiology 9 |
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Physiology |
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Physiology Jiang, Lei Guo, Ya-Juan Zhang, Fang Zhang, Yu-Yang McCook, Laurence John Yuan, Xiang-Cheng Lei, Xin-Ming Zhou, Guo-Wei Guo, Ming-Lan Cai, Lin Lian, Jian-Sheng Qian, Pei-Yuan Huang, Hui Diurnally Fluctuating pCO2 Modifies the Physiological Responses of Coral Recruits Under Ocean Acidification |
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Physiology |
description |
Diurnal pCO2 fluctuations have the potential to modulate the biological impact of ocean acidification (OA) on reef calcifiers, yet little is known about the physiological and biochemical responses of scleractinian corals to fluctuating carbonate chemistry under OA. Here, we exposed newly settled Pocillopora damicornis for 7 days to ambient pCO2, steady and elevated pCO2 (stable OA) and diurnally fluctuating pCO2 under future OA scenario (fluctuating OA). We measured the photo-physiology, growth (lateral growth, budding and calcification), oxidative stress and activities of carbonic anhydrase (CA), Ca-ATPase and Mg-ATPase. Results showed that while OA enhanced the photochemical performance of in hospite symbionts, it also increased catalase activity and lipid peroxidation. Furthermore, both OA treatments altered the activities of host and symbiont CA, suggesting functional changes in the uptake of dissolved inorganic carbon (DIC) for photosynthesis and calcification. Most importantly, only the fluctuating OA treatment resulted in a slight drop in calcification with concurrent up-regulation of Ca-ATPase and Mg-ATPase, implying increased energy expenditure on calcification. Consequently, asexual budding rates decreased by 50% under fluctuating OA. These results suggest that diel pCO2 oscillations could modify the physiological responses and potentially alter the energy budget of coral recruits under future OA, and that fluctuating OA is more energetically expensive for the maintenance of coral recruits than stable OA. |
format |
Text |
author |
Jiang, Lei Guo, Ya-Juan Zhang, Fang Zhang, Yu-Yang McCook, Laurence John Yuan, Xiang-Cheng Lei, Xin-Ming Zhou, Guo-Wei Guo, Ming-Lan Cai, Lin Lian, Jian-Sheng Qian, Pei-Yuan Huang, Hui |
author_facet |
Jiang, Lei Guo, Ya-Juan Zhang, Fang Zhang, Yu-Yang McCook, Laurence John Yuan, Xiang-Cheng Lei, Xin-Ming Zhou, Guo-Wei Guo, Ming-Lan Cai, Lin Lian, Jian-Sheng Qian, Pei-Yuan Huang, Hui |
author_sort |
Jiang, Lei |
title |
Diurnally Fluctuating pCO2 Modifies the Physiological Responses of Coral Recruits Under Ocean Acidification |
title_short |
Diurnally Fluctuating pCO2 Modifies the Physiological Responses of Coral Recruits Under Ocean Acidification |
title_full |
Diurnally Fluctuating pCO2 Modifies the Physiological Responses of Coral Recruits Under Ocean Acidification |
title_fullStr |
Diurnally Fluctuating pCO2 Modifies the Physiological Responses of Coral Recruits Under Ocean Acidification |
title_full_unstemmed |
Diurnally Fluctuating pCO2 Modifies the Physiological Responses of Coral Recruits Under Ocean Acidification |
title_sort |
diurnally fluctuating pco2 modifies the physiological responses of coral recruits under ocean acidification |
publisher |
Frontiers Media S.A. |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6340097/ http://www.ncbi.nlm.nih.gov/pubmed/30692940 https://doi.org/10.3389/fphys.2018.01952 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6340097/ http://www.ncbi.nlm.nih.gov/pubmed/30692940 http://dx.doi.org/10.3389/fphys.2018.01952 |
op_rights |
Copyright © 2019 Jiang, Guo, Zhang, Zhang, McCook, Yuan, Lei, Zhou, Guo, Cai, Lian, Qian and Huang. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fphys.2018.01952 |
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Frontiers in Physiology |
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9 |
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1766157351547568128 |