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Seasonal stability in the microbiomes of temperate gorgonians and the red coral Corallium rubrum across the Mediterranean Sea
van de Water, J.A.J.M.; Voolstra, C.R.; Rottier, C.; Cocito, S.; Peirano, A.; Allemand, D.; Ferrier-Pagès, C. (2018). Seasonal stability in the microbiomes of temperate gorgonians and the red coral Corallium rubrum across the Mediterranean Sea. Microb. Ecol. 75(1): 274-288. https://dx.doi.org/10.1007/s00248-017-1006-y
In: Microbial Ecology. Springer: New York,. ISSN 0095-3628; e-ISSN 1432-184X
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| Trefwoorden |
Alcyonacea [WoRMS]; Corallium rubrum (Linnaeus, 1758) [WoRMS]; Spirochaetes [WoRMS]
Marien/Kust |
| Author keywords |
Endozoicomonas; Spirochaetes; Red coral; Gorgonian; 16S rRNA gene;Bacterial community; Holobiont; Evolution; Microbiome; Symbiosis |
| Auteurs | | Top |
- van de Water, J.A.J.M.
- Voolstra, C.R.
- Rottier, C.
- Cocito, S.
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- Peirano, A.
- Allemand, D.
- Ferrier-Pagès, C.
|
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| Abstract |
Populations of key benthic habitat-forming octocoral species have declined significantly in the Mediterranean Sea due to mass mortality events caused by microbial disease outbreaks linked to high summer seawater temperatures. Recently, we showed that the microbial communities of these octocorals are relatively structured; however, our knowledge on the seasonal dynamics of these microbiomes is still limited. To investigate their seasonal stability, we collected four soft gorgonian species (Eunicella singularis, Eunicella cavolini, Eunicella verrucosa and Leptogorgia sarmentosa) and the precious red coral (Corallium rubrum) from two coastal locations with different terrestrial impact levels in the Mediterranean Sea, and used next-generation amplicon sequencing of the 16S rRNA gene. The microbiomes of all soft gorgonian species were dominated by the same ‘core microbiome’ bacteria belonging to the Endozoicomonas and the Cellvibrionales clade BD1-7, whereas the red coral microbiome was primarily composed of ‘core’ Spirochaetes, Oceanospirillales ME2 and Parcubacteria. The associations with these bacterial taxa were relatively consistent over time at each location for each octocoral species. However, differences in microbiome composition and seasonal dynamics were observed between locations and could primarily be attributed to locally variant bacteria. Overall, our data provide further evidence of the intricate symbiotic relationships that exist between Mediterranean octocorals and their associated microbes, which are ancient and highly conserved over both space and time, and suggest regulation of the microbiome composition by the host, depending on local conditions. |
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