New Insights From Transcriptomic Data Reveal Differential Effects of CO2 Acidification Stress on Photosynthesis of an Endosymbiotic Dinoflagellate in hospite
Ocean acidification (OA) has both detrimental as well as beneficial effects on marine life; it negatively affects calcifiers while enhancing the productivity of photosynthetic organisms. To date, many studies have focused on the impacts of OA on calcification in reef-building corals, a process parti...
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ftdoajarticles:oai:doaj.org/article:6c494cb43e364ca5bcdaf9a7fabbd014 2023-05-15T17:50:14+02:00 New Insights From Transcriptomic Data Reveal Differential Effects of CO2 Acidification Stress on Photosynthesis of an Endosymbiotic Dinoflagellate in hospite Marcela Herrera Yi Jin Liew Alexander Venn Eric Tambutté Didier Zoccola Sylvie Tambutté Guoxin Cui Manuel Aranda 2021-07-01T00:00:00Z https://doi.org/10.3389/fmicb.2021.666510 https://doaj.org/article/6c494cb43e364ca5bcdaf9a7fabbd014 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmicb.2021.666510/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2021.666510 https://doaj.org/article/6c494cb43e364ca5bcdaf9a7fabbd014 Frontiers in Microbiology, Vol 12 (2021) carbon-concentrating mechanism coral-dinoflagellate symbiosis ocean acidification Symbiodiniaceae F’/Fm’ pCO2 Microbiology QR1-502 article 2021 ftdoajarticles https://doi.org/10.3389/fmicb.2021.666510 2022-12-31T13:22:36Z Ocean acidification (OA) has both detrimental as well as beneficial effects on marine life; it negatively affects calcifiers while enhancing the productivity of photosynthetic organisms. To date, many studies have focused on the impacts of OA on calcification in reef-building corals, a process particularly susceptible to acidification. However, little is known about the effects of OA on their photosynthetic algal partners, with some studies suggesting potential benefits for symbiont productivity. Here, we investigated the transcriptomic response of the endosymbiont Symbiodinium microadriaticum (CCMP2467) in the Red Sea coral Stylophora pistillata subjected to different long-term (2 years) OA treatments (pH 8.0, 7.8, 7.4, 7.2). Transcriptomic analyses revealed that symbionts from corals under lower pH treatments responded to acidification by increasing the expression of genes related to photosynthesis and carbon-concentrating mechanisms. These processes were mostly up-regulated and associated metabolic pathways were significantly enriched, suggesting an overall positive effect of OA on the expression of photosynthesis-related genes. To test this conclusion on a physiological level, we analyzed the symbiont’s photochemical performance across treatments. However, in contrast to the beneficial effects suggested by the observed gene expression changes, we found significant impairment of photosynthesis with increasing pCO2. Collectively, our data suggest that over-expression of photosynthesis-related genes is not a beneficial effect of OA but rather an acclimation response of the holobiont to different water chemistries. Our study highlights the complex effects of ocean acidification on these symbiotic organisms and the role of the host in determining symbiont productivity and performance. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Frontiers in Microbiology 12 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
carbon-concentrating mechanism coral-dinoflagellate symbiosis ocean acidification Symbiodiniaceae F’/Fm’ pCO2 Microbiology QR1-502 |
spellingShingle |
carbon-concentrating mechanism coral-dinoflagellate symbiosis ocean acidification Symbiodiniaceae F’/Fm’ pCO2 Microbiology QR1-502 Marcela Herrera Yi Jin Liew Alexander Venn Eric Tambutté Didier Zoccola Sylvie Tambutté Guoxin Cui Manuel Aranda New Insights From Transcriptomic Data Reveal Differential Effects of CO2 Acidification Stress on Photosynthesis of an Endosymbiotic Dinoflagellate in hospite |
topic_facet |
carbon-concentrating mechanism coral-dinoflagellate symbiosis ocean acidification Symbiodiniaceae F’/Fm’ pCO2 Microbiology QR1-502 |
description |
Ocean acidification (OA) has both detrimental as well as beneficial effects on marine life; it negatively affects calcifiers while enhancing the productivity of photosynthetic organisms. To date, many studies have focused on the impacts of OA on calcification in reef-building corals, a process particularly susceptible to acidification. However, little is known about the effects of OA on their photosynthetic algal partners, with some studies suggesting potential benefits for symbiont productivity. Here, we investigated the transcriptomic response of the endosymbiont Symbiodinium microadriaticum (CCMP2467) in the Red Sea coral Stylophora pistillata subjected to different long-term (2 years) OA treatments (pH 8.0, 7.8, 7.4, 7.2). Transcriptomic analyses revealed that symbionts from corals under lower pH treatments responded to acidification by increasing the expression of genes related to photosynthesis and carbon-concentrating mechanisms. These processes were mostly up-regulated and associated metabolic pathways were significantly enriched, suggesting an overall positive effect of OA on the expression of photosynthesis-related genes. To test this conclusion on a physiological level, we analyzed the symbiont’s photochemical performance across treatments. However, in contrast to the beneficial effects suggested by the observed gene expression changes, we found significant impairment of photosynthesis with increasing pCO2. Collectively, our data suggest that over-expression of photosynthesis-related genes is not a beneficial effect of OA but rather an acclimation response of the holobiont to different water chemistries. Our study highlights the complex effects of ocean acidification on these symbiotic organisms and the role of the host in determining symbiont productivity and performance. |
format |
Article in Journal/Newspaper |
author |
Marcela Herrera Yi Jin Liew Alexander Venn Eric Tambutté Didier Zoccola Sylvie Tambutté Guoxin Cui Manuel Aranda |
author_facet |
Marcela Herrera Yi Jin Liew Alexander Venn Eric Tambutté Didier Zoccola Sylvie Tambutté Guoxin Cui Manuel Aranda |
author_sort |
Marcela Herrera |
title |
New Insights From Transcriptomic Data Reveal Differential Effects of CO2 Acidification Stress on Photosynthesis of an Endosymbiotic Dinoflagellate in hospite |
title_short |
New Insights From Transcriptomic Data Reveal Differential Effects of CO2 Acidification Stress on Photosynthesis of an Endosymbiotic Dinoflagellate in hospite |
title_full |
New Insights From Transcriptomic Data Reveal Differential Effects of CO2 Acidification Stress on Photosynthesis of an Endosymbiotic Dinoflagellate in hospite |
title_fullStr |
New Insights From Transcriptomic Data Reveal Differential Effects of CO2 Acidification Stress on Photosynthesis of an Endosymbiotic Dinoflagellate in hospite |
title_full_unstemmed |
New Insights From Transcriptomic Data Reveal Differential Effects of CO2 Acidification Stress on Photosynthesis of an Endosymbiotic Dinoflagellate in hospite |
title_sort |
new insights from transcriptomic data reveal differential effects of co2 acidification stress on photosynthesis of an endosymbiotic dinoflagellate in hospite |
publisher |
Frontiers Media S.A. |
publishDate |
2021 |
url |
https://doi.org/10.3389/fmicb.2021.666510 https://doaj.org/article/6c494cb43e364ca5bcdaf9a7fabbd014 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Frontiers in Microbiology, Vol 12 (2021) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmicb.2021.666510/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2021.666510 https://doaj.org/article/6c494cb43e364ca5bcdaf9a7fabbd014 |
op_doi |
https://doi.org/10.3389/fmicb.2021.666510 |
container_title |
Frontiers in Microbiology |
container_volume |
12 |
_version_ |
1766156905881796608 |