Ocean acidification elicits differential bleaching and gene expression patterns in larval reef coral Pocillopora damicornis under heat stress
The successful dispersal of coral larvae is vital to the population replenishment and reef recovery and resilience. Despite that this critical early stage is susceptible to ocean warming and acidification, little is known about the responses of coral larvae to warming and acidification across differ...
id |
ftunivsthongkong:oai:repository.hkust.edu.hk:1783.1-118721 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
The Hong Kong University of Science and Technology: HKUST Institutional Repository |
op_collection_id |
ftunivsthongkong |
language |
English |
topic |
Cellular enzyme Climate change Coral larvae Thermal bleaching Transcriptome |
spellingShingle |
Cellular enzyme Climate change Coral larvae Thermal bleaching Transcriptome Jiang, Lei Sun, You-Fang Zhou, Guo-Wei Tong, Hao-Ya Huang, Lin-Tao Yu, Xiao-Lei Liu, Cheng-Yue Zhang, Yu-Yang Yuan, Xiang-Cheng Qian, Peiyuan Huang, Hui Ocean acidification elicits differential bleaching and gene expression patterns in larval reef coral Pocillopora damicornis under heat stress |
topic_facet |
Cellular enzyme Climate change Coral larvae Thermal bleaching Transcriptome |
description |
The successful dispersal of coral larvae is vital to the population replenishment and reef recovery and resilience. Despite that this critical early stage is susceptible to ocean warming and acidification, little is known about the responses of coral larvae to warming and acidification across different biological scales. This study explored the influences of elevated temperature (29 °C versus 33 °C) and pCO2 (500 μatm versus 1000 μatm) on brooded larvae of Pocillopora damicornis at the organismal, cellular and gene expression levels. Heat stress caused bleaching, depressed light-enhanced dark respiration, photosynthesis and autotrophy, whereas high pCO2 stimulated photosynthesis. Although survival was unaffected, larvae at 33 °C were ten-times more likely to settle than those at 29 °C, suggesting reduced capacity to disperse and differentiate suitable substrate. Remarkably, heat stress induced greater symbiont loss at ambient pCO2 than at high pCO2, while cell-specific pigment concentrations of symbionts at 33 °C increased twofold under ambient pCO2 relative to high pCO2, suggesting pCO2-dependent bleaching patterns. Considerable increases in activities of host antioxidants superoxide dismutase (SOD) and catalase (CAT) at 33 °C indicated oxidative stress, whereas lipid peroxidation and caspase activities were contained, thereby restraining larval mortality at 33 °C. Furthermore, the coral host mounted stronger transcriptional responses than symbionts. High pCO2 stimulated host metabolic pathways, possibly because of the boosted algal productivity. In contrast, host metabolic processes and symbiont photosystem genes were downregulated at 33 °C. Interestingly, the upregulation of extracellular matrix genes and glycosaminoglycan degradation pathway at 33 °C was more evident under ambient pCO2 than high pCO2, suggesting compromised host tissue integrity that could have facilitated symbiont expulsion and bleaching. Our results provide insights into how coral larvae respond to warming and acidification at different ... |
format |
Article in Journal/Newspaper |
author |
Jiang, Lei Sun, You-Fang Zhou, Guo-Wei Tong, Hao-Ya Huang, Lin-Tao Yu, Xiao-Lei Liu, Cheng-Yue Zhang, Yu-Yang Yuan, Xiang-Cheng Qian, Peiyuan Huang, Hui |
author_facet |
Jiang, Lei Sun, You-Fang Zhou, Guo-Wei Tong, Hao-Ya Huang, Lin-Tao Yu, Xiao-Lei Liu, Cheng-Yue Zhang, Yu-Yang Yuan, Xiang-Cheng Qian, Peiyuan Huang, Hui |
author_sort |
Jiang, Lei |
title |
Ocean acidification elicits differential bleaching and gene expression patterns in larval reef coral Pocillopora damicornis under heat stress |
title_short |
Ocean acidification elicits differential bleaching and gene expression patterns in larval reef coral Pocillopora damicornis under heat stress |
title_full |
Ocean acidification elicits differential bleaching and gene expression patterns in larval reef coral Pocillopora damicornis under heat stress |
title_fullStr |
Ocean acidification elicits differential bleaching and gene expression patterns in larval reef coral Pocillopora damicornis under heat stress |
title_full_unstemmed |
Ocean acidification elicits differential bleaching and gene expression patterns in larval reef coral Pocillopora damicornis under heat stress |
title_sort |
ocean acidification elicits differential bleaching and gene expression patterns in larval reef coral pocillopora damicornis under heat stress |
publisher |
Elsevier B.V. |
publishDate |
2022 |
url |
https://repository.hkust.edu.hk/ir/Record/1783.1-118721 https://doi.org/10.1016/j.scitotenv.2022.156851 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0048-9697&rft.volume=&rft.issue=&rft.date=2022&rft.spage=&rft.aulast=Jiang&rft.aufirst=&rft.atitle=Ocean+acidification+elicits+differential+bleaching+and+gene+expression+patterns+in+larval+reef+coral+Pocillopora+damicornis+under+heat+stress&rft.title=Science+of+the+Total+Environment http://www.scopus.com/record/display.url?eid=2-s2.0-85133689548&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000829486500008 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://repository.hkust.edu.hk/ir/Record/1783.1-118721 Science of the Total Environment, v. 842, 10 October 2022, article number 156851 0048-9697 1879-1026 https://doi.org/10.1016/j.scitotenv.2022.156851 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0048-9697&rft.volume=&rft.issue=&rft.date=2022&rft.spage=&rft.aulast=Jiang&rft.aufirst=&rft.atitle=Ocean+acidification+elicits+differential+bleaching+and+gene+expression+patterns+in+larval+reef+coral+Pocillopora+damicornis+under+heat+stress&rft.title=Science+of+the+Total+Environment http://www.scopus.com/record/display.url?eid=2-s2.0-85133689548&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000829486500008 |
op_doi |
https://doi.org/10.1016/j.scitotenv.2022.156851 |
container_title |
Science of The Total Environment |
container_volume |
842 |
container_start_page |
156851 |
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1776202810879115264 |
spelling |
ftunivsthongkong:oai:repository.hkust.edu.hk:1783.1-118721 2023-09-05T13:22:17+02:00 Ocean acidification elicits differential bleaching and gene expression patterns in larval reef coral Pocillopora damicornis under heat stress Jiang, Lei Sun, You-Fang Zhou, Guo-Wei Tong, Hao-Ya Huang, Lin-Tao Yu, Xiao-Lei Liu, Cheng-Yue Zhang, Yu-Yang Yuan, Xiang-Cheng Qian, Peiyuan Huang, Hui 2022 https://repository.hkust.edu.hk/ir/Record/1783.1-118721 https://doi.org/10.1016/j.scitotenv.2022.156851 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0048-9697&rft.volume=&rft.issue=&rft.date=2022&rft.spage=&rft.aulast=Jiang&rft.aufirst=&rft.atitle=Ocean+acidification+elicits+differential+bleaching+and+gene+expression+patterns+in+larval+reef+coral+Pocillopora+damicornis+under+heat+stress&rft.title=Science+of+the+Total+Environment http://www.scopus.com/record/display.url?eid=2-s2.0-85133689548&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000829486500008 English eng Elsevier B.V. https://repository.hkust.edu.hk/ir/Record/1783.1-118721 Science of the Total Environment, v. 842, 10 October 2022, article number 156851 0048-9697 1879-1026 https://doi.org/10.1016/j.scitotenv.2022.156851 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0048-9697&rft.volume=&rft.issue=&rft.date=2022&rft.spage=&rft.aulast=Jiang&rft.aufirst=&rft.atitle=Ocean+acidification+elicits+differential+bleaching+and+gene+expression+patterns+in+larval+reef+coral+Pocillopora+damicornis+under+heat+stress&rft.title=Science+of+the+Total+Environment http://www.scopus.com/record/display.url?eid=2-s2.0-85133689548&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000829486500008 Cellular enzyme Climate change Coral larvae Thermal bleaching Transcriptome Article 2022 ftunivsthongkong https://doi.org/10.1016/j.scitotenv.2022.156851 2023-08-11T00:12:58Z The successful dispersal of coral larvae is vital to the population replenishment and reef recovery and resilience. Despite that this critical early stage is susceptible to ocean warming and acidification, little is known about the responses of coral larvae to warming and acidification across different biological scales. This study explored the influences of elevated temperature (29 °C versus 33 °C) and pCO2 (500 μatm versus 1000 μatm) on brooded larvae of Pocillopora damicornis at the organismal, cellular and gene expression levels. Heat stress caused bleaching, depressed light-enhanced dark respiration, photosynthesis and autotrophy, whereas high pCO2 stimulated photosynthesis. Although survival was unaffected, larvae at 33 °C were ten-times more likely to settle than those at 29 °C, suggesting reduced capacity to disperse and differentiate suitable substrate. Remarkably, heat stress induced greater symbiont loss at ambient pCO2 than at high pCO2, while cell-specific pigment concentrations of symbionts at 33 °C increased twofold under ambient pCO2 relative to high pCO2, suggesting pCO2-dependent bleaching patterns. Considerable increases in activities of host antioxidants superoxide dismutase (SOD) and catalase (CAT) at 33 °C indicated oxidative stress, whereas lipid peroxidation and caspase activities were contained, thereby restraining larval mortality at 33 °C. Furthermore, the coral host mounted stronger transcriptional responses than symbionts. High pCO2 stimulated host metabolic pathways, possibly because of the boosted algal productivity. In contrast, host metabolic processes and symbiont photosystem genes were downregulated at 33 °C. Interestingly, the upregulation of extracellular matrix genes and glycosaminoglycan degradation pathway at 33 °C was more evident under ambient pCO2 than high pCO2, suggesting compromised host tissue integrity that could have facilitated symbiont expulsion and bleaching. Our results provide insights into how coral larvae respond to warming and acidification at different ... Article in Journal/Newspaper Ocean acidification The Hong Kong University of Science and Technology: HKUST Institutional Repository Science of The Total Environment 842 156851 |