Effects of high temperature and CO₂ on intracellular DMSP in the cold-water coral Lophelia pertusa

Significant warming and acidification of the oceans is projected to occur by the end of the century. CO₂ vents, areas of upwelling and downwelling, and potential leaks from carbon capture and storage facilities may also cause localised environmental changes, enhancing or depressing the effect of glo...

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Published in:	Marine biology Vol. 161; no. 7; pp. 1499 - 1506
Main Authors:	Burdett, H. L, Carruthers, M, Donohue, P. J. C, Wicks, L. C, Hennige, S. J, Roberts, J. M, Kamenos, N. A
Format:	Journal Article
Language:	English
Published:	Berlin/Heidelberg Springer-Verlag 2014 Springer Berlin Heidelberg Springer Springer Nature B.V
Subjects:	Acidification Animal and plant ecology Animal, plant and microbial ecology antioxidants Biogeochemistry Biological and medical sciences Biomedical and Life Sciences carbon Carbon dioxide Carbon sequestration Climate change Cnidaria. Ctenaria Coral reefs corals Deep sea ecosystems Environmental changes Environmental conditions environmental factors foods Freshwater & Marine Ecology Fundamental and applied biological sciences. Psychology Global climate High temperature Invertebrates Life Sciences Marine & Freshwater Sciences Marine biology Microbiology Oceanography Oceans Original Paper Sea water ecosystems sulfur Synecology temperature Upwelling Water column Zoology Scotland DMSP Concentration Carbonate Chemistry Ocean Acidification Coral Coloni Remotely Operate Vehicle Coelenterata Temperature Cold water Cold Cnidaria Carbon dioxide Environmental factor Coral reef Intracellular Invertebrata
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Summary:	Significant warming and acidification of the oceans is projected to occur by the end of the century. CO₂ vents, areas of upwelling and downwelling, and potential leaks from carbon capture and storage facilities may also cause localised environmental changes, enhancing or depressing the effect of global climate change. Cold-water coral ecosystems are threatened by future changes in carbonate chemistry, yet our knowledge of the response of these corals to high temperature and high CO₂ conditions is limited. Dimethylsulphoniopropionate (DMSP), and its breakdown product dimethylsulphide (DMS), are putative antioxidants that may be accumulated by invertebrates via their food or symbionts, although recent research suggests that some invertebrates may also be able to synthesise DMSP. This study provides the first information on the impact of high temperature (12 °C) and high CO₂ (817 ppm) on intracellular DMSP in the cold-water coral Lophelia pertusa from the Mingulay Reef Complex, Scotland (56°49′N, 07°23′W), where in situ environmental conditions are meditated by tidally induced downwellings. An increase in intracellular DMSP under high CO₂ conditions was observed, whilst water column particulate DMS + DMSP was reduced. In both high temperature treatments, intracellular DMSP was similar to the control treatment, whilst dissolved DMSP + DMS was not significantly different between any of the treatments. These results suggest that L. pertusa accumulates DMSP from the surrounding water column; uptake may be up-regulated under high CO₂ conditions, but mediated by high temperature. These results provide new insight into the biotic control of deep-sea biogeochemistry and may impact our understanding of the global sulphur cycle, and the survival of cold-water corals under projected global change.
Bibliography:	http://dx.doi.org/10.1007/s00227-014-2435-5
ISSN:	0025-3162 1432-1793 1432-1793
DOI:	10.1007/s00227-014-2435-5