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...
Published in: | Frontiers in Microbiology |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Frontiers Media S.A.
2021
|
Subjects: | |
Online Access: | https://doi.org/10.3389/fmicb.2021.767174 https://doaj.org/article/70daf5649b324d9c8725370750ff4fa3 |
id |
ftdoajarticles:oai:doaj.org/article:70daf5649b324d9c8725370750ff4fa3 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:70daf5649b324d9c8725370750ff4fa3 2023-05-15T17:48:58+02:00 Regulation of the Coral-Associated Bacteria and Symbiodiniaceae in Acropora valida Under Ocean Acidification Ruiqi Ge Jiayuan Liang Kefu Yu Biao Chen Xiaopeng Yu Chuanqi Deng Jinni Chen Yongqian Xu Liangyun Qin 2021-12-01T00:00:00Z https://doi.org/10.3389/fmicb.2021.767174 https://doaj.org/article/70daf5649b324d9c8725370750ff4fa3 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmicb.2021.767174/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2021.767174 https://doaj.org/article/70daf5649b324d9c8725370750ff4fa3 Frontiers in Microbiology, Vol 12 (2021) Symbiodiniaceae coral-associated bacteria coral holobiont ocean acidification photosynthetic efficiency Microbiology QR1-502 article 2021 ftdoajarticles https://doi.org/10.3389/fmicb.2021.767174 2022-12-31T11:30:55Z 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 Directory of Open Access Journals: DOAJ Articles Frontiers in Microbiology 12 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Symbiodiniaceae coral-associated bacteria coral holobiont ocean acidification photosynthetic efficiency Microbiology QR1-502 |
spellingShingle |
Symbiodiniaceae coral-associated bacteria coral holobiont ocean acidification photosynthetic efficiency Microbiology QR1-502 Ruiqi Ge Jiayuan Liang Kefu Yu Biao Chen Xiaopeng Yu Chuanqi Deng Jinni Chen Yongqian Xu Liangyun Qin Regulation of the Coral-Associated Bacteria and Symbiodiniaceae in Acropora valida Under Ocean Acidification |
topic_facet |
Symbiodiniaceae coral-associated bacteria coral holobiont ocean acidification photosynthetic efficiency Microbiology QR1-502 |
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. |
format |
Article in Journal/Newspaper |
author |
Ruiqi Ge Jiayuan Liang Kefu Yu Biao Chen Xiaopeng Yu Chuanqi Deng Jinni Chen Yongqian Xu Liangyun Qin |
author_facet |
Ruiqi Ge Jiayuan Liang Kefu Yu Biao Chen Xiaopeng Yu Chuanqi Deng Jinni Chen Yongqian Xu Liangyun Qin |
author_sort |
Ruiqi Ge |
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 S.A. |
publishDate |
2021 |
url |
https://doi.org/10.3389/fmicb.2021.767174 https://doaj.org/article/70daf5649b324d9c8725370750ff4fa3 |
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.2021.767174/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2021.767174 https://doaj.org/article/70daf5649b324d9c8725370750ff4fa3 |
op_doi |
https://doi.org/10.3389/fmicb.2021.767174 |
container_title |
Frontiers in Microbiology |
container_volume |
12 |
_version_ |
1766155149889241088 |