Rapid acclimation of juvenile corals to CO2-mediated acidification by upregulation of heat shock protein and Bcl-2 genes
Corals play a key role in ocean ecosystems and carbonate balance, but their molecular response to ocean acidification remains unclear. The only previous whole-transcriptome study (Moya et al. Molecular Ecology, 2012; 21, 2440) documented extensive disruption of gene expression, particularly of genes...
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ftanucanberra:oai:digitalcollections.anu.edu.au:1885/14926 2023-05-15T17:51:16+02:00 Rapid acclimation of juvenile corals to CO2-mediated acidification by upregulation of heat shock protein and Bcl-2 genes Moya, A. Huisman, L. Forêt, S. Gattuso, J.-P. Hayward, David C. Ball, E. E. Miller, D. J. 2015-08-26T01:26:18Z pages http://hdl.handle.net/1885/14926 unknown Wiley http://purl.org/au-research/grants/arc/DP1095343 0962-1083 http://hdl.handle.net/1885/14926 © 2014 John Wiley & Sons Ltd Molecular Ecology acropora millepora bcl-2 caspases climate change corals heat shock proteins acclimatization animals anthozoa carbon dioxide gene expression profiling heat-shock proteins high-throughput nucleotide sequencing hydrogen-ion concentration multigene family oxidative stress queensland sequence analysis rna transcriptome up-regulation genes Journal article 2015 ftanucanberra 2015-08-31T22:17:40Z Corals play a key role in ocean ecosystems and carbonate balance, but their molecular response to ocean acidification remains unclear. The only previous whole-transcriptome study (Moya et al. Molecular Ecology, 2012; 21, 2440) documented extensive disruption of gene expression, particularly of genes encoding skeletal organic matrix proteins, in juvenile corals (Acropora millepora) after short-term (3 d) exposure to elevated pCO2 . In this study, whole-transcriptome analysis was used to compare the effects of such 'acute' (3 d) exposure to elevated pCO2 with a longer ('prolonged'; 9 d) period of exposure beginning immediately post-fertilization. Far fewer genes were differentially expressed under the 9-d treatment, and although the transcriptome data implied wholesale disruption of metabolism and calcification genes in the acute treatment experiment, expression of most genes was at control levels after prolonged treatment. There was little overlap between the genes responding to the acute and prolonged treatments, but heat shock proteins (HSPs) and heat shock factors (HSFs) were over-represented amongst the genes responding to both treatments. Amongst these was an HSP70 gene previously shown to be involved in acclimation to thermal stress in a field population of another acroporid coral. The most obvious feature of the molecular response in the 9-d treatment experiment was the upregulation of five distinct Bcl-2 family members, the majority predicted to be anti-apoptotic. This suggests that an important component of the longer term response to elevated CO2 is suppression of apoptosis. It therefore appears that juvenile A. millepora have the capacity to rapidly acclimate to elevated pCO2 , a process mediated by upregulation of specific HSPs and a suite of Bcl-2 family members. This research was supported by the Australian Research Council through Discovery Grant DP1095343 to D.J.M., E.E.B. and S.F., and via the Centre of Excellence for Coral Reef Studies, and by a Marie Curie International Outgoing Fellowship (grant agreement # PIOF-GA-2008-235142 project title AMICAL) to A.M. This work is a contribution to the ‘European Project on Ocean Acidification’ (EPOCA), which received funding from the European Community's Seventh Framework Program (FP7/2007–2013) under grant agreement # 211384. Article in Journal/Newspaper Ocean acidification Australian National University: ANU Digital Collections Queensland |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
acropora millepora bcl-2 caspases climate change corals heat shock proteins acclimatization animals anthozoa carbon dioxide gene expression profiling heat-shock proteins high-throughput nucleotide sequencing hydrogen-ion concentration multigene family oxidative stress queensland sequence analysis rna transcriptome up-regulation genes |
spellingShingle |
acropora millepora bcl-2 caspases climate change corals heat shock proteins acclimatization animals anthozoa carbon dioxide gene expression profiling heat-shock proteins high-throughput nucleotide sequencing hydrogen-ion concentration multigene family oxidative stress queensland sequence analysis rna transcriptome up-regulation genes Moya, A. Huisman, L. Forêt, S. Gattuso, J.-P. Hayward, David C. Ball, E. E. Miller, D. J. Rapid acclimation of juvenile corals to CO2-mediated acidification by upregulation of heat shock protein and Bcl-2 genes |
topic_facet |
acropora millepora bcl-2 caspases climate change corals heat shock proteins acclimatization animals anthozoa carbon dioxide gene expression profiling heat-shock proteins high-throughput nucleotide sequencing hydrogen-ion concentration multigene family oxidative stress queensland sequence analysis rna transcriptome up-regulation genes |
description |
Corals play a key role in ocean ecosystems and carbonate balance, but their molecular response to ocean acidification remains unclear. The only previous whole-transcriptome study (Moya et al. Molecular Ecology, 2012; 21, 2440) documented extensive disruption of gene expression, particularly of genes encoding skeletal organic matrix proteins, in juvenile corals (Acropora millepora) after short-term (3 d) exposure to elevated pCO2 . In this study, whole-transcriptome analysis was used to compare the effects of such 'acute' (3 d) exposure to elevated pCO2 with a longer ('prolonged'; 9 d) period of exposure beginning immediately post-fertilization. Far fewer genes were differentially expressed under the 9-d treatment, and although the transcriptome data implied wholesale disruption of metabolism and calcification genes in the acute treatment experiment, expression of most genes was at control levels after prolonged treatment. There was little overlap between the genes responding to the acute and prolonged treatments, but heat shock proteins (HSPs) and heat shock factors (HSFs) were over-represented amongst the genes responding to both treatments. Amongst these was an HSP70 gene previously shown to be involved in acclimation to thermal stress in a field population of another acroporid coral. The most obvious feature of the molecular response in the 9-d treatment experiment was the upregulation of five distinct Bcl-2 family members, the majority predicted to be anti-apoptotic. This suggests that an important component of the longer term response to elevated CO2 is suppression of apoptosis. It therefore appears that juvenile A. millepora have the capacity to rapidly acclimate to elevated pCO2 , a process mediated by upregulation of specific HSPs and a suite of Bcl-2 family members. This research was supported by the Australian Research Council through Discovery Grant DP1095343 to D.J.M., E.E.B. and S.F., and via the Centre of Excellence for Coral Reef Studies, and by a Marie Curie International Outgoing Fellowship (grant agreement # PIOF-GA-2008-235142 project title AMICAL) to A.M. This work is a contribution to the ‘European Project on Ocean Acidification’ (EPOCA), which received funding from the European Community's Seventh Framework Program (FP7/2007–2013) under grant agreement # 211384. |
format |
Article in Journal/Newspaper |
author |
Moya, A. Huisman, L. Forêt, S. Gattuso, J.-P. Hayward, David C. Ball, E. E. Miller, D. J. |
author_facet |
Moya, A. Huisman, L. Forêt, S. Gattuso, J.-P. Hayward, David C. Ball, E. E. Miller, D. J. |
author_sort |
Moya, A. |
title |
Rapid acclimation of juvenile corals to CO2-mediated acidification by upregulation of heat shock protein and Bcl-2 genes |
title_short |
Rapid acclimation of juvenile corals to CO2-mediated acidification by upregulation of heat shock protein and Bcl-2 genes |
title_full |
Rapid acclimation of juvenile corals to CO2-mediated acidification by upregulation of heat shock protein and Bcl-2 genes |
title_fullStr |
Rapid acclimation of juvenile corals to CO2-mediated acidification by upregulation of heat shock protein and Bcl-2 genes |
title_full_unstemmed |
Rapid acclimation of juvenile corals to CO2-mediated acidification by upregulation of heat shock protein and Bcl-2 genes |
title_sort |
rapid acclimation of juvenile corals to co2-mediated acidification by upregulation of heat shock protein and bcl-2 genes |
publisher |
Wiley |
publishDate |
2015 |
url |
http://hdl.handle.net/1885/14926 |
geographic |
Queensland |
geographic_facet |
Queensland |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Molecular Ecology |
op_relation |
http://purl.org/au-research/grants/arc/DP1095343 0962-1083 http://hdl.handle.net/1885/14926 |
op_rights |
© 2014 John Wiley & Sons Ltd |
_version_ |
1766158377651535872 |