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Diurnally Fluctuating pCO(2) Modifies the Physiological Responses of Coral Recruits Under Ocean Acidification
Jiang, Lei3; Quo, Ya-Juan; Zhang, Fang3; Zhang, Yu-Yang; McCook, Laurence John4; Yuan, Xiang-Cheng; Lei, Xin-Ming; Zhou, Guo-Wei; Guo, Ming-Lan; Cai, Lin; Lian, Jian-Sheng; Qian, Pei-Yuan; Huang, Hui1,2
2019
Source PublicationFRONTIERS IN PHYSIOLOGY
ISSN1664-042X
Volume9Pages:1952
AbstractDiurnal pCO(2) fluctuations have the potential to modulate the biological impact of ocean acidification (OA) on reef calcifiers, yet little is known about the physiological and biochemical responses of scleractinian corals to fluctuating carbonate chemistry under OA. Here, we exposed newly settled Pocillopora damicornis for 7 days to ambient pCO(2), steady and elevated pCO(2) (stable OA) and diurnally fluctuating pCO(2) under future OA scenario (fluctuating OA). We measured the photo-physiology, growth (lateral growth, budding and calcification), oxidative stress and activities of carbonic anhydrase (CA), Ca-ATPase and Mg-ATPase. Results showed that while OA enhanced the photochemical performance of in hospite symbionts, it also increased catalase activity and lipid peroxidation. Furthermore, both OA treatments altered the activities of host and symbiont CA, suggesting functional changes in the uptake of dissolved inorganic carbon (DIC) for photosynthesis and calcification. Most importantly, only the fluctuating OA treatment resulted in a slight drop in calcification with concurrent upregulation of Ca-ATPase and Mg-ATPase, implying increased energy expenditure on calcification. Consequently, asexual budding rates decreased by 50% under fluctuating OA. These results suggest that diel pCO(2) oscillations could modify the physiological responses and potentially alter the energy budget of coral recruits under future OA, and that fluctuating OA is more energetically expensive for the maintenance of coral recruits than stable OA.
DepartmentLMB
Keywordocean acidification diurnal pCO(2) fluctuations coral calcification carbonic anhydrase proton pump trade-off
DOI10.3389/fphys.2018.01952
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17918
Collection中科院海洋生物资源可持续利用重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Trop Marine Bioresources & Ecol, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China
2.Chinese Acad Sci, Guangdong Prov Key Lab Appl Marine Biol, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China
3.Chinese Acad Sci, Hainan Trop Marine Biol Res Stn, Sanya, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
5.James Cook Univ, ARC Ctr Excellence Coral Reef Studies, Townsville, Qld, Australia
6.Hong Kong Univ Sci & Technol, Shenzhen Res Inst, Hong Kong, Peoples R China
7.Hong Kong Univ Sci & Technol, Dept Ocean Sci, Hong Kong, Peoples R China
Recommended Citation
GB/T 7714
Jiang, Lei,Quo, Ya-Juan,Zhang, Fang,et al. Diurnally Fluctuating pCO(2) Modifies the Physiological Responses of Coral Recruits Under Ocean Acidification[J]. FRONTIERS IN PHYSIOLOGY,2019,9:1952.
APA Jiang, Lei.,Quo, Ya-Juan.,Zhang, Fang.,Zhang, Yu-Yang.,McCook, Laurence John.,...&Huang, Hui.(2019).Diurnally Fluctuating pCO(2) Modifies the Physiological Responses of Coral Recruits Under Ocean Acidification.FRONTIERS IN PHYSIOLOGY,9,1952.
MLA Jiang, Lei,et al."Diurnally Fluctuating pCO(2) Modifies the Physiological Responses of Coral Recruits Under Ocean Acidification".FRONTIERS IN PHYSIOLOGY 9(2019):1952.
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