Symbiodinium Functional Diversity in the Coral Siderastrea siderea Is Influenced by Thermal Stress and Reef Environment, but Not Ocean Acidification
Coral bleaching events are increasing in frequency, demanding examination of the physiological and molecular responses of scleractinian corals and their algal symbionts (Symbiodinium sp.) to stressors associated with bleaching. Here, we quantify the effects of long-term (95-day) thermal and CO2-acid...
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ftdoajarticles:oai:doaj.org/article:c5d067fc59a74740a3143e8aba946485 2023-05-15T17:51:45+02:00 Symbiodinium Functional Diversity in the Coral Siderastrea siderea Is Influenced by Thermal Stress and Reef Environment, but Not Ocean Acidification Sarah W. Davies Justin B. Ries Adrian Marchetti Karl D. Castillo 2018-04-01T00:00:00Z https://doi.org/10.3389/fmars.2018.00150 https://doaj.org/article/c5d067fc59a74740a3143e8aba946485 EN eng Frontiers Media S.A. http://journal.frontiersin.org/article/10.3389/fmars.2018.00150/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2018.00150 https://doaj.org/article/c5d067fc59a74740a3143e8aba946485 Frontiers in Marine Science, Vol 5 (2018) symbiodinium climate change transcriptomics coral thermal stress thermal tolerance Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2018 ftdoajarticles https://doi.org/10.3389/fmars.2018.00150 2022-12-31T03:07:24Z Coral bleaching events are increasing in frequency, demanding examination of the physiological and molecular responses of scleractinian corals and their algal symbionts (Symbiodinium sp.) to stressors associated with bleaching. Here, we quantify the effects of long-term (95-day) thermal and CO2-acidification stress on photochemical efficiency of in hospite Symbiodinium within the coral Siderastrea siderea, along with corresponding coral color intensity, for corals from two reef zones (forereef, nearshore) on the Mesoamerican Barrier Reef System. We then explore the molecular responses of in hospite Symbiodinium to these stressors via genome-wide gene expression profiling. Elevated temperatures reduced symbiont photochemical efficiencies and were highly correlated with coral color loss. However, photochemical efficiencies of forereef symbionts were more negatively affected by thermal stress than nearshore symbionts, suggesting greater thermal tolerance and/or reduced photodamage in nearshore corals. At control temperatures, CO2-acidification had little effect on symbiont physiology, although forereef symbionts exhibited constitutively higher photochemical efficiencies than nearshore symbionts. Gene expression profiling revealed that S. siderea were dominated by Symbiodinium goreaui (C1), except under thermal stress, which caused shifts to thermotolerant Symbiodinium trenchii (D1a). Comparative transcriptomics of conserved genes across the host and symbiont revealed few differentially expressed S. goreaui genes when compared to S. siderea, highlighting the host's role in the coral's response to environmental stress. Although S. goreaui transcriptomes did not vary in response to acidification stress, their gene expression was strongly dependent on reef zone, with forereef S. goreaui exhibiting enrichment of genes associated with photosynthesis. This finding, coupled with constitutively higher forereef S. goreaui photochemical efficiencies, suggests that functional differences in genes associated with primary ... Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Frontiers in Marine Science 5 |
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ftdoajarticles |
language |
English |
topic |
symbiodinium climate change transcriptomics coral thermal stress thermal tolerance Science Q General. Including nature conservation geographical distribution QH1-199.5 |
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symbiodinium climate change transcriptomics coral thermal stress thermal tolerance Science Q General. Including nature conservation geographical distribution QH1-199.5 Sarah W. Davies Justin B. Ries Adrian Marchetti Karl D. Castillo Symbiodinium Functional Diversity in the Coral Siderastrea siderea Is Influenced by Thermal Stress and Reef Environment, but Not Ocean Acidification |
topic_facet |
symbiodinium climate change transcriptomics coral thermal stress thermal tolerance Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
Coral bleaching events are increasing in frequency, demanding examination of the physiological and molecular responses of scleractinian corals and their algal symbionts (Symbiodinium sp.) to stressors associated with bleaching. Here, we quantify the effects of long-term (95-day) thermal and CO2-acidification stress on photochemical efficiency of in hospite Symbiodinium within the coral Siderastrea siderea, along with corresponding coral color intensity, for corals from two reef zones (forereef, nearshore) on the Mesoamerican Barrier Reef System. We then explore the molecular responses of in hospite Symbiodinium to these stressors via genome-wide gene expression profiling. Elevated temperatures reduced symbiont photochemical efficiencies and were highly correlated with coral color loss. However, photochemical efficiencies of forereef symbionts were more negatively affected by thermal stress than nearshore symbionts, suggesting greater thermal tolerance and/or reduced photodamage in nearshore corals. At control temperatures, CO2-acidification had little effect on symbiont physiology, although forereef symbionts exhibited constitutively higher photochemical efficiencies than nearshore symbionts. Gene expression profiling revealed that S. siderea were dominated by Symbiodinium goreaui (C1), except under thermal stress, which caused shifts to thermotolerant Symbiodinium trenchii (D1a). Comparative transcriptomics of conserved genes across the host and symbiont revealed few differentially expressed S. goreaui genes when compared to S. siderea, highlighting the host's role in the coral's response to environmental stress. Although S. goreaui transcriptomes did not vary in response to acidification stress, their gene expression was strongly dependent on reef zone, with forereef S. goreaui exhibiting enrichment of genes associated with photosynthesis. This finding, coupled with constitutively higher forereef S. goreaui photochemical efficiencies, suggests that functional differences in genes associated with primary ... |
format |
Article in Journal/Newspaper |
author |
Sarah W. Davies Justin B. Ries Adrian Marchetti Karl D. Castillo |
author_facet |
Sarah W. Davies Justin B. Ries Adrian Marchetti Karl D. Castillo |
author_sort |
Sarah W. Davies |
title |
Symbiodinium Functional Diversity in the Coral Siderastrea siderea Is Influenced by Thermal Stress and Reef Environment, but Not Ocean Acidification |
title_short |
Symbiodinium Functional Diversity in the Coral Siderastrea siderea Is Influenced by Thermal Stress and Reef Environment, but Not Ocean Acidification |
title_full |
Symbiodinium Functional Diversity in the Coral Siderastrea siderea Is Influenced by Thermal Stress and Reef Environment, but Not Ocean Acidification |
title_fullStr |
Symbiodinium Functional Diversity in the Coral Siderastrea siderea Is Influenced by Thermal Stress and Reef Environment, but Not Ocean Acidification |
title_full_unstemmed |
Symbiodinium Functional Diversity in the Coral Siderastrea siderea Is Influenced by Thermal Stress and Reef Environment, but Not Ocean Acidification |
title_sort |
symbiodinium functional diversity in the coral siderastrea siderea is influenced by thermal stress and reef environment, but not ocean acidification |
publisher |
Frontiers Media S.A. |
publishDate |
2018 |
url |
https://doi.org/10.3389/fmars.2018.00150 https://doaj.org/article/c5d067fc59a74740a3143e8aba946485 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Frontiers in Marine Science, Vol 5 (2018) |
op_relation |
http://journal.frontiersin.org/article/10.3389/fmars.2018.00150/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2018.00150 https://doaj.org/article/c5d067fc59a74740a3143e8aba946485 |
op_doi |
https://doi.org/10.3389/fmars.2018.00150 |
container_title |
Frontiers in Marine Science |
container_volume |
5 |
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1766158987425742848 |