Transcriptomic changes in coral holobionts provide insights into physiological challenges of future climate and ocean change
Tropical reef-building coral stress levels will intensify with the predicted rising atmospheric CO2 resulting in ocean temperature and acidification increase. Most studies to date have focused on the destabilization of coral-dinoflagellate symbioses due to warming oceans, or declining calcification...
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ftunivqespace:oai:espace.library.uq.edu.au:UQ:374417 2023-05-15T17:50:13+02:00 Transcriptomic changes in coral holobionts provide insights into physiological challenges of future climate and ocean change Kaniewska, Paulina Chan, Chon-Kit Kenneth Kline, David Ling, Edmund Yew Siang Rosic, Nedeljka Edwards, David Hoegh-Guldberg, Ove Dove, Sophie Medina, Mónica 2015-10-28 https://espace.library.uq.edu.au/view/UQ:374417 eng eng Public Library of Science doi:10.1371/journal.pone.0139223 issn:1932-6203 orcid:0000-0001-7510-6713 orcid:0000-0003-1823-8634 Not set Multidisciplinary Sciences Science & Technology - Other Topics 1100 Agricultural and Biological Sciences 1300 Biochemistry Genetics and Molecular Biology Journal Article 2015 ftunivqespace https://doi.org/10.1371/journal.pone.0139223 2020-11-24T01:08:48Z Tropical reef-building coral stress levels will intensify with the predicted rising atmospheric CO2 resulting in ocean temperature and acidification increase. Most studies to date have focused on the destabilization of coral-dinoflagellate symbioses due to warming oceans, or declining calcification due to ocean acidification. In our study, pH and temperature conditions consistent with the end-of-century scenarios of the Intergovernmental Panel on Climate Change (IPCC) caused major changes in photosynthesis and respiration, in addition to decreased calcification rates in the coral Acropora millepora. Population density of symbiotic dinoflagellates (Symbiodinium) under high levels of ocean acidification and temperature (Representative Concentration Pathway, RCP8.5) decreased to half of that found under present day conditions, with photosynthetic and respiratory rates also being reduced by 40%. These physiological changes were accompanied by evidence for gene regulation of calcium and bicarbonate transporters along with components of the organic matrix. Meta-transcriptomic RNA-Seq data analyses showed an overall down regulation of metabolic transcripts, and an increased abundance of transcripts involved in circadian clock control, controlling the damage of oxidative stress, calcium signaling/homeostasis, cytoskeletal interactions, transcription regulation, DNA repair, Wnt signaling and apoptosis/immunity/toxins. We suggest that increased maintenance costs under ocean acidification and warming, and diversion of cellular ATP to pH homeostasis, oxidative stress response, UPR and DNA repair, along with metabolic suppression, may underpin why Acroporid species tend not to thrive under future environmental stress. Our study highlights the potential increased energy demand when the coral holobiont is exposed to high levels of ocean warming and acidification. Article in Journal/Newspaper Ocean acidification The University of Queensland: UQ eSpace PLOS ONE 10 10 e0139223 |
institution |
Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
English |
topic |
Multidisciplinary Sciences Science & Technology - Other Topics 1100 Agricultural and Biological Sciences 1300 Biochemistry Genetics and Molecular Biology |
spellingShingle |
Multidisciplinary Sciences Science & Technology - Other Topics 1100 Agricultural and Biological Sciences 1300 Biochemistry Genetics and Molecular Biology Kaniewska, Paulina Chan, Chon-Kit Kenneth Kline, David Ling, Edmund Yew Siang Rosic, Nedeljka Edwards, David Hoegh-Guldberg, Ove Dove, Sophie Transcriptomic changes in coral holobionts provide insights into physiological challenges of future climate and ocean change |
topic_facet |
Multidisciplinary Sciences Science & Technology - Other Topics 1100 Agricultural and Biological Sciences 1300 Biochemistry Genetics and Molecular Biology |
description |
Tropical reef-building coral stress levels will intensify with the predicted rising atmospheric CO2 resulting in ocean temperature and acidification increase. Most studies to date have focused on the destabilization of coral-dinoflagellate symbioses due to warming oceans, or declining calcification due to ocean acidification. In our study, pH and temperature conditions consistent with the end-of-century scenarios of the Intergovernmental Panel on Climate Change (IPCC) caused major changes in photosynthesis and respiration, in addition to decreased calcification rates in the coral Acropora millepora. Population density of symbiotic dinoflagellates (Symbiodinium) under high levels of ocean acidification and temperature (Representative Concentration Pathway, RCP8.5) decreased to half of that found under present day conditions, with photosynthetic and respiratory rates also being reduced by 40%. These physiological changes were accompanied by evidence for gene regulation of calcium and bicarbonate transporters along with components of the organic matrix. Meta-transcriptomic RNA-Seq data analyses showed an overall down regulation of metabolic transcripts, and an increased abundance of transcripts involved in circadian clock control, controlling the damage of oxidative stress, calcium signaling/homeostasis, cytoskeletal interactions, transcription regulation, DNA repair, Wnt signaling and apoptosis/immunity/toxins. We suggest that increased maintenance costs under ocean acidification and warming, and diversion of cellular ATP to pH homeostasis, oxidative stress response, UPR and DNA repair, along with metabolic suppression, may underpin why Acroporid species tend not to thrive under future environmental stress. Our study highlights the potential increased energy demand when the coral holobiont is exposed to high levels of ocean warming and acidification. |
author2 |
Medina, Mónica |
format |
Article in Journal/Newspaper |
author |
Kaniewska, Paulina Chan, Chon-Kit Kenneth Kline, David Ling, Edmund Yew Siang Rosic, Nedeljka Edwards, David Hoegh-Guldberg, Ove Dove, Sophie |
author_facet |
Kaniewska, Paulina Chan, Chon-Kit Kenneth Kline, David Ling, Edmund Yew Siang Rosic, Nedeljka Edwards, David Hoegh-Guldberg, Ove Dove, Sophie |
author_sort |
Kaniewska, Paulina |
title |
Transcriptomic changes in coral holobionts provide insights into physiological challenges of future climate and ocean change |
title_short |
Transcriptomic changes in coral holobionts provide insights into physiological challenges of future climate and ocean change |
title_full |
Transcriptomic changes in coral holobionts provide insights into physiological challenges of future climate and ocean change |
title_fullStr |
Transcriptomic changes in coral holobionts provide insights into physiological challenges of future climate and ocean change |
title_full_unstemmed |
Transcriptomic changes in coral holobionts provide insights into physiological challenges of future climate and ocean change |
title_sort |
transcriptomic changes in coral holobionts provide insights into physiological challenges of future climate and ocean change |
publisher |
Public Library of Science |
publishDate |
2015 |
url |
https://espace.library.uq.edu.au/view/UQ:374417 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
doi:10.1371/journal.pone.0139223 issn:1932-6203 orcid:0000-0001-7510-6713 orcid:0000-0003-1823-8634 Not set |
op_doi |
https://doi.org/10.1371/journal.pone.0139223 |
container_title |
PLOS ONE |
container_volume |
10 |
container_issue |
10 |
container_start_page |
e0139223 |
_version_ |
1766156875482529792 |