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Article Dans Une Revue Scientific Reports Année : 2020

A unique approach to monitor stress in coral exposed to emerging pollutants

Résumé

Metabolomic profiling of the hexacoral Pocillopora damicornis exposed to solar filters revealed a metabolomic signature of stress in this coral. It was demonstrated that the concentration of the known steroid (3β, 5α, 8α) -5, 8-epidioxy- ergosta- 6, 24(28) - dien- 3- ol (14) increased in response to octocrylene (OC) and ethylhexyl salicylate (ES) at 50 µg/L. Based on the overall coral response, we hypothesize that steroid 14 mediates coral response to stress. OC also specifically altered mitochondrial function at this concentration and above, while ES triggered a stress/inflammatory response at 300 µg/L and above as witnessed by the significant increases in the concentrations of polyunsaturated fatty acids, lysophosphatidylcholines and lysophosphatidylethanolamines. Benzophenone-3 increased the concentration of compound 14 at 2 mg/L, while the concentration of stress marker remained unchanged upon exposition to the other solar filters tested. Also, our results seemed to refute earlier suggestions that platelet-activating factor is involved in the coral inflammatory response.
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Dates et versions

hal-02868494 , version 1 (15-06-2020)

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Didier Stien, Marcelino Suzuki, Alice M S Rodrigues, Marion Yvin, Fanny Clergeaud, et al.. A unique approach to monitor stress in coral exposed to emerging pollutants. Scientific Reports, 2020, 10, pp.9601. ⟨10.1038/s41598-020-66117-3⟩. ⟨hal-02868494⟩
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