Regulation of the Coral-Associated Bacteria and Symbiodiniaceae in Acropora valida Under Ocean Acidification
Ocean acidification is one of many stressors that coral reef ecosystems are currently contending with. Thus, understanding the response of key symbiotic microbes to ocean acidification is of great significance for understanding the adaptation mechanism and development trend of coral holobionts. Here...
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crfrontiers:10.3389/fmicb.2021.767174 2024-05-12T08:09:10+00:00 Regulation of the Coral-Associated Bacteria and Symbiodiniaceae in Acropora valida Under Ocean Acidification Ge, Ruiqi Liang, Jiayuan Yu, Kefu Chen, Biao Yu, Xiaopeng Deng, Chuanqi Chen, Jinni Xu, Yongqian Qin, Liangyun National Natural Science Foundation of China 2021 http://dx.doi.org/10.3389/fmicb.2021.767174 https://www.frontiersin.org/articles/10.3389/fmicb.2021.767174/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Microbiology volume 12 ISSN 1664-302X Microbiology (medical) Microbiology journal-article 2021 crfrontiers https://doi.org/10.3389/fmicb.2021.767174 2024-04-18T07:56:14Z Ocean acidification is one of many stressors that coral reef ecosystems are currently contending with. Thus, understanding the response of key symbiotic microbes to ocean acidification is of great significance for understanding the adaptation mechanism and development trend of coral holobionts. Here, high-throughput sequencing technology was employed to investigate the coral-associated bacteria and Symbiodiniaceae of the ecologically important coral Acropora valida exposed to different pH gradients. After 30 days of acclimatization, we set four acidification gradients (pH 8.2, 7.8, 7.4, and 7.2, respectively), and each pH condition was applied for 10 days, with the whole experiment lasting for 70 days. Although the Symbiodiniaceae density decreased significantly, the coral did not appear to be bleached, and the real-time photosynthetic rate did not change significantly, indicating that A. valida has strong tolerance to acidification. Moreover, the Symbiodiniaceae community composition was hardly affected by ocean acidification, with the C1 subclade ( Cladocopium goreaui ) being dominant among the Symbiodiniaceae dominant types. The relative abundance of the Symbiodiniaceae background types was significantly higher at pH 7.2, indicating that ocean acidification might increase the stability of the community composition by regulating the Symbiodiniaceae rare biosphere. Furthermore, the stable symbiosis between the C1 subclade and coral host may contribute to the stability of the real-time photosynthetic efficiency. Finally, concerning the coral-associated bacteria, the stable symbiosis between Endozoicomonas and coral host is likely to help them adapt to ocean acidification. The significant increase in the relative abundance of Cyanobacteria at pH 7.2 may also compensate for the photosynthesis efficiency of a coral holobiont. In summary, this study suggests that the combined response of key symbiotic microbes helps the whole coral host resist the threats of ocean acidification. Article in Journal/Newspaper Ocean acidification Frontiers (Publisher) Frontiers in Microbiology 12 |
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Microbiology (medical) Microbiology |
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Microbiology (medical) Microbiology Ge, Ruiqi Liang, Jiayuan Yu, Kefu Chen, Biao Yu, Xiaopeng Deng, Chuanqi Chen, Jinni Xu, Yongqian Qin, Liangyun Regulation of the Coral-Associated Bacteria and Symbiodiniaceae in Acropora valida Under Ocean Acidification |
topic_facet |
Microbiology (medical) Microbiology |
description |
Ocean acidification is one of many stressors that coral reef ecosystems are currently contending with. Thus, understanding the response of key symbiotic microbes to ocean acidification is of great significance for understanding the adaptation mechanism and development trend of coral holobionts. Here, high-throughput sequencing technology was employed to investigate the coral-associated bacteria and Symbiodiniaceae of the ecologically important coral Acropora valida exposed to different pH gradients. After 30 days of acclimatization, we set four acidification gradients (pH 8.2, 7.8, 7.4, and 7.2, respectively), and each pH condition was applied for 10 days, with the whole experiment lasting for 70 days. Although the Symbiodiniaceae density decreased significantly, the coral did not appear to be bleached, and the real-time photosynthetic rate did not change significantly, indicating that A. valida has strong tolerance to acidification. Moreover, the Symbiodiniaceae community composition was hardly affected by ocean acidification, with the C1 subclade ( Cladocopium goreaui ) being dominant among the Symbiodiniaceae dominant types. The relative abundance of the Symbiodiniaceae background types was significantly higher at pH 7.2, indicating that ocean acidification might increase the stability of the community composition by regulating the Symbiodiniaceae rare biosphere. Furthermore, the stable symbiosis between the C1 subclade and coral host may contribute to the stability of the real-time photosynthetic efficiency. Finally, concerning the coral-associated bacteria, the stable symbiosis between Endozoicomonas and coral host is likely to help them adapt to ocean acidification. The significant increase in the relative abundance of Cyanobacteria at pH 7.2 may also compensate for the photosynthesis efficiency of a coral holobiont. In summary, this study suggests that the combined response of key symbiotic microbes helps the whole coral host resist the threats of ocean acidification. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Ge, Ruiqi Liang, Jiayuan Yu, Kefu Chen, Biao Yu, Xiaopeng Deng, Chuanqi Chen, Jinni Xu, Yongqian Qin, Liangyun |
author_facet |
Ge, Ruiqi Liang, Jiayuan Yu, Kefu Chen, Biao Yu, Xiaopeng Deng, Chuanqi Chen, Jinni Xu, Yongqian Qin, Liangyun |
author_sort |
Ge, Ruiqi |
title |
Regulation of the Coral-Associated Bacteria and Symbiodiniaceae in Acropora valida Under Ocean Acidification |
title_short |
Regulation of the Coral-Associated Bacteria and Symbiodiniaceae in Acropora valida Under Ocean Acidification |
title_full |
Regulation of the Coral-Associated Bacteria and Symbiodiniaceae in Acropora valida Under Ocean Acidification |
title_fullStr |
Regulation of the Coral-Associated Bacteria and Symbiodiniaceae in Acropora valida Under Ocean Acidification |
title_full_unstemmed |
Regulation of the Coral-Associated Bacteria and Symbiodiniaceae in Acropora valida Under Ocean Acidification |
title_sort |
regulation of the coral-associated bacteria and symbiodiniaceae in acropora valida under ocean acidification |
publisher |
Frontiers Media SA |
publishDate |
2021 |
url |
http://dx.doi.org/10.3389/fmicb.2021.767174 https://www.frontiersin.org/articles/10.3389/fmicb.2021.767174/full |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Frontiers in Microbiology volume 12 ISSN 1664-302X |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmicb.2021.767174 |
container_title |
Frontiers in Microbiology |
container_volume |
12 |
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1798852352005898240 |