fmicb-10-01850 August 26, 2019 Time: 15:36 # 1 ORIGINAL RESEARCH published: 28 August 2019 doi: 10.3389/fmicb.2019.01850 Disease Specific Bacterial Communities in a Coralline Algae of the Northwestern Mediterranean Sea: A Combined Culture Dependent and -Independent Approach Gaëlle Quéré1,2*†, Laurent Intertaglia3, Claude Payri2 and Pierre E. Galand1 1 Sorbonne Université, CNRS, Laboratoire d’Ecogéochimie des Environnements Benthiques (LECOB), Observatoire Océanologique de Banyuls, Banyuls-sur-Mer, France, 2 UMR 9220 ENTROPIE, ‘Ecologie Marine Tropicale des Océans Pacifique et Indien’, IRD, CNRS, Université de La Réunion, Noumea, New Caledonia, 3 Plateforme Bio2Mar, CNRS, Edited by: Observatoire Océanologique de Banyuls, Sorbonne Université, Banyuls-sur-Mer, France Russell T. Hill, University of Maryland, Baltimore, United States Crustose coralline red algae (CCA) are important components of marine ecosystems Reviewed by: thriving from tropical waters and up to the poles. They fulfill important ecological Javier del Campo, University of Miami, United States services including framework building and induction of larval settlement. Like other Marco J. L. Coolen, marine organisms, CCAs have not been spared by the increase in marine disease Curtin University, Australia outbreaks. The white-band syndrome has been recently observed in corallines from *Correspondence: the Mediterranean Sea indicating that the disease threat has extended from tropical to Gaëlle Quéré
[email protected] temperate waters. Here, we examined the microbiome and the pathobiome of healthy †Present address: and diseased Neogoniolithon brassica-florida coralline algae in the Mediterranean Sea Gaëlle Quéré, by combining culture-dependent and -independent approaches. The coralline white- Molecular Invertebrate Systematics and Ecology Laboratory, Department band syndrome was associated with a distinct pathobiome compared to healthy tissues of Biology, Chemistry and Marine and showed similarities with the white-band syndrome described in the Caribbean Sea.