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dc.contributor.authorTernon, Eva
dc.contributor.authorZarate, Lina
dc.contributor.authorChenesseau, Sandrine
dc.contributor.authorCroué, Julie
dc.contributor.authorDumollard, Rémi
dc.contributor.authorSuzuki, Marcelino T.
dc.contributor.authorThomas, Olivier P.
dc.identifier.citationTernon, Eva, Zarate, Lina, Chenesseau, Sandrine, Croué, Julie, Dumollard, Rémi, Suzuki, Marcelino T., & Thomas, Olivier P. (2016). Spherulization as a process for the exudation of chemical cues by the encrusting sponge C. crambe. Scientific Reports, 6, 29474. doi: 10.1038/srep29474en_IE
dc.description.abstractEcological interactions in the marine environment are now recognized to be partly held by chemical cues produced by marine organisms. In particular, sponges are sessile animals thought to rely on the bioactive substances they synthesize to ensure their development and defense. However, the mechanisms leading the sponges to use their specialized metabolites as chemical cues remain unknown. Here we report the constant release of bioactive polycyclic guanidinic alkaloids by the Mediterranean sponge Crambe crambe into the dissolved and the particulate phases using a targeted metabolomics study. These compounds were proven to be stored into already described specialized (spherulous) sponge cells and dispersed into the water column after release through the sponge exhaling channels (oscula), leading to a chemical shield surrounding the sponge. Low concentrations of these compounds were demonstrated to have teratogenic effects on embryos of a common sea squirt (ascidian). This mechanism of action called spherulization may therefore contribute to the ecological success of encrusting sponges that need to extend their substrate cover to expand.en_IE
dc.description.sponsorshipPart of this work was funded by the region PACA (Plateau MALLABAR), the ECOS Nord project C15U01 by the EMR, a partnership between the UPMC, the Laboratoires Pierre Fabre and CNRS.en_IE
dc.publisherNature Publishing Groupen_IE
dc.relation.ispartofScientific Reportsen
dc.subjectChemical Ecologyen_IE
dc.titleSpherulization as a process for the exudation of chemical cues by the encrusting sponge C. crambeen_IE
dc.local.contactOlivier Thomas. Email:

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