Tuesday, October 31, 2017

Scientific Publication in Marine Biology - Ecophysiology Team

Bacterial communities associated with Mediterranean gorgonians are stable over time

A recent publication of the Ecophysiology team has shown that bacteria living in the tissue and mucus of Mediterranean gorgonians, and which largely contribute to their health, form very stable associations with gorgonians on temporal scales. For this purpose, samples of the red coral, Corallium rubrum, who is largely used in jewellery, as well as gorgonians, which are important habitat providers for fish and invertebrates, have been taken at each season in Cassis, France, et La Spezia, Italie. The study confirmed earlier results from CSM scientists that each species possesses a different  microbiome, but that the bacterial community of the red coral is rather unique, consisting of mostly Spirochaetes, Oceanospirillales and Parcubacteria (Scientific Reports), while all soft gorgonians are in symbiosis with Endozoicomonas and Cellvibrionales (Microbial Ecology). This study also validated the finding that the bacterial community on gorgonians is different between relatively undisturbed (Cassis) and polluted (La Spezia) locations. Interestingly, however, it appeared that the gorgonian microbiome was adjusted to cope with the pollution stress and not negatively impacted. Overall, the temporal and geographical stability of the gorgonian-bacterial associations suggests that these associations are spécific and play an important role in the host metabolism, but their functions remains to be investigated.

This work was funded by the Paul Hamel Foundation.

© E. Béraud (CSM)
Deep rock exploration, Cassis

van de Water, J. A., Voolstra, C. R., Rottier, C., Cocito, S., Peirano, A., Allemand, D., & Ferrier-Pagès, C. (2017). Seasonal Stability in the Microbiomes of Temperate Gorgonians and the Red Coral Corallium rubrum Across the Mediterranean Sea. Microbial Ecology, 1-15.

 


 For more information, see www.centrescientifique.mc or contact :

- Dr Christine Ferrier-Pagès, Research Director, in charge of the Ecophysiology team of the Marine Biology Department, Scientific Centre of Monaco (ferrier@centrescientifique.mc)

- Dr Jeroen van de Water, Post-doctoral scientist in the Ecophysiology team of the Marine Biology Department, Scientific Centre of Monaco (jvdewater@centrescientifique.mc)

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