Defense Responses to Short-term Hypoxia and Seawater Acidification in the Thick Shell Mussel Mytilus coruscus
The rising anthropogenic atmospheric CO2 results in the reduction of seawater pH, namely ocean acidification (OA). In East China Sea, the largest coastal hypoxic zone was observed in the world. This region is also strongly impacted by ocean acidification as receiving much nutrient from Changjiang an...
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ftpubmed:oai:pubmedcentral.nih.gov:5343010 2023-05-15T17:50:38+02:00 Defense Responses to Short-term Hypoxia and Seawater Acidification in the Thick Shell Mussel Mytilus coruscus Sui, Yanming Liu, Yimeng Zhao, Xin Dupont, Sam Hu, Menghong Wu, Fangli Huang, Xizhi Li, Jiale Lu, Weiqun Wang, Youji 2017-03-09 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5343010/ https://doi.org/10.3389/fphys.2017.00145 en eng Frontiers Media S.A. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5343010/ http://dx.doi.org/10.3389/fphys.2017.00145 Copyright © 2017 Sui, Liu, Zhao, Dupont, Hu, Wu, Huang, Li, Lu and Wang. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. CC-BY Physiology Text 2017 ftpubmed https://doi.org/10.3389/fphys.2017.00145 2017-03-26T01:07:22Z The rising anthropogenic atmospheric CO2 results in the reduction of seawater pH, namely ocean acidification (OA). In East China Sea, the largest coastal hypoxic zone was observed in the world. This region is also strongly impacted by ocean acidification as receiving much nutrient from Changjiang and Qiantangjiang, and organisms can experience great short-term natural variability of DO and pH in this area. In order to evaluate the defense responses of marine mussels under this scenario, the thick shell mussel Mytilus coruscus were exposed to three pH/pCO2 levels (7.3/2800 μatm, 7.7/1020 μatm, 8.1/376 μatm) at two dissolved oxygen concentrations (DO, 2.0, 6.0 mg L−1) for 72 h. Results showed that byssus thread parameters, such as the number, diameter, attachment strength and plaque area were reduced by low DO, and shell-closing strength was significantly weaker under both hypoxia and low pH conditions. Expression patterns of genes related to mussel byssus protein (MBP) were affected by hypoxia. Generally, hypoxia reduced MBP1 and MBP7 expressions, but increased MBP13 expression. In conclusion, both hypoxia and low pH induced negative effects on mussel defense responses, with hypoxia being the main driver of change. In addition, significant interactive effects between pH and DO were observed on shell-closing strength. Therefore, the adverse effects induced by hypoxia on the defense of mussels may be aggravated by low pH in the natural environments. Text Ocean acidification PubMed Central (PMC) Frontiers in Physiology 8 |
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Physiology Sui, Yanming Liu, Yimeng Zhao, Xin Dupont, Sam Hu, Menghong Wu, Fangli Huang, Xizhi Li, Jiale Lu, Weiqun Wang, Youji Defense Responses to Short-term Hypoxia and Seawater Acidification in the Thick Shell Mussel Mytilus coruscus |
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Physiology |
description |
The rising anthropogenic atmospheric CO2 results in the reduction of seawater pH, namely ocean acidification (OA). In East China Sea, the largest coastal hypoxic zone was observed in the world. This region is also strongly impacted by ocean acidification as receiving much nutrient from Changjiang and Qiantangjiang, and organisms can experience great short-term natural variability of DO and pH in this area. In order to evaluate the defense responses of marine mussels under this scenario, the thick shell mussel Mytilus coruscus were exposed to three pH/pCO2 levels (7.3/2800 μatm, 7.7/1020 μatm, 8.1/376 μatm) at two dissolved oxygen concentrations (DO, 2.0, 6.0 mg L−1) for 72 h. Results showed that byssus thread parameters, such as the number, diameter, attachment strength and plaque area were reduced by low DO, and shell-closing strength was significantly weaker under both hypoxia and low pH conditions. Expression patterns of genes related to mussel byssus protein (MBP) were affected by hypoxia. Generally, hypoxia reduced MBP1 and MBP7 expressions, but increased MBP13 expression. In conclusion, both hypoxia and low pH induced negative effects on mussel defense responses, with hypoxia being the main driver of change. In addition, significant interactive effects between pH and DO were observed on shell-closing strength. Therefore, the adverse effects induced by hypoxia on the defense of mussels may be aggravated by low pH in the natural environments. |
format |
Text |
author |
Sui, Yanming Liu, Yimeng Zhao, Xin Dupont, Sam Hu, Menghong Wu, Fangli Huang, Xizhi Li, Jiale Lu, Weiqun Wang, Youji |
author_facet |
Sui, Yanming Liu, Yimeng Zhao, Xin Dupont, Sam Hu, Menghong Wu, Fangli Huang, Xizhi Li, Jiale Lu, Weiqun Wang, Youji |
author_sort |
Sui, Yanming |
title |
Defense Responses to Short-term Hypoxia and Seawater Acidification in the Thick Shell Mussel Mytilus coruscus |
title_short |
Defense Responses to Short-term Hypoxia and Seawater Acidification in the Thick Shell Mussel Mytilus coruscus |
title_full |
Defense Responses to Short-term Hypoxia and Seawater Acidification in the Thick Shell Mussel Mytilus coruscus |
title_fullStr |
Defense Responses to Short-term Hypoxia and Seawater Acidification in the Thick Shell Mussel Mytilus coruscus |
title_full_unstemmed |
Defense Responses to Short-term Hypoxia and Seawater Acidification in the Thick Shell Mussel Mytilus coruscus |
title_sort |
defense responses to short-term hypoxia and seawater acidification in the thick shell mussel mytilus coruscus |
publisher |
Frontiers Media S.A. |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5343010/ https://doi.org/10.3389/fphys.2017.00145 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5343010/ http://dx.doi.org/10.3389/fphys.2017.00145 |
op_rights |
Copyright © 2017 Sui, Liu, Zhao, Dupont, Hu, Wu, Huang, Li, Lu and Wang. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fphys.2017.00145 |
container_title |
Frontiers in Physiology |
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8 |
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1766157473169801216 |