Stress biomarkers in the cold-water octocoral Dentomuricea aff. meteor during an ex-situ experiment in the Azores


We report the results of an aquaria-based experiment testing the effects of suspended particles generated during potential mining activities, on a common habitat-building coral species in the Azores, Dentomuricea aff. meteor. Coral fragments were maintained in 10-L aquaria and exposed to three experimental treatments for a period of four weeks at the DeepSeaLab aquaria facilities (Okeanos-University of the Azores): (1) control conditions (no added sediments); (2) suspended polymetallic sulphide (PMS) particles; (3) suspended quartz particles. Antioxidant stress related biomarkers (glutathione S−transferase, superoxide dismutase, catalase, malondialdehyde) in D. aff. meteor tissues were used to evaluate the degree of cellular stress induced by exposure to PMS and quartz particles at times 0 and 13 days in all treatments and from the control and quartz treatments also at time 27 days of the experiment.

Cellular stress biomarkers: Results of the enzymatic activities of antioxidant enzymes SOD, CAT, GST and concentration of MDA in D. meteor tissuesMDA: malondialdehyde (nmol/mg of protein,wet weight)SOD: superoxide dismutase (inhibition units/mg of protein, wet weight)CAT: catalase (µmol/min/mg of protein, wet weight).GST: Glutathione S-transferase (nmol/min/mg of protein, wet weight)

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Creator Carreiro-Silva, Marina ; Martins, Ines ; Raimundo, Joana ; Caetano, Miguel ; Bettencourt, Raul ; Cerqueira, Teresa; Colaço, Ana
Publisher PANGAEA
Publication Year 2022
Funding Reference Fundação para a Ciência e Tecnologia Crossref Funder ID Mining2/0005/2017 Mining Impact 2; Horizon 2020 Crossref Funder ID 678760 A Trans-Atlantic assessment and deep-water ecosystem-based spatial management plan for Europe; Horizon 2020 Crossref Funder ID 818123 Integrated Assessment of Atlantic Marine Ecosystems in Space and Time; Seventh Framework Programme Crossref Funder ID 603418 Managing Impacts of Deep-seA reSource exploitation
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 702 data points
Discipline Earth System Research
Spatial Coverage (-29.039 LON, 38.540 LAT); Condor Seamounts