Current Microbiology

, Volume 75, Issue 3, pp 359–367 | Cite as

Phylogeny and Antagonistic Activities of Culturable Bacteria Associated with the Gut Microbiota of the Sea Urchin (Paracentrotus lividus)

  • Marinella Silva LaportEmail author
  • Mathieu Bauwens
  • Marie Collard
  • Isabelle George


In this study, we have investigated the phylogeny and the antagonistic interactions of culturable bacteria isolated from the sea urchin Paracentrotus lividus collected from Aber and Morgat, both located in Crozon peninsula, France. Bacteria were isolated from the gastrointestinal tracts of ten specimens by using conventional culture-dependent method and then investigated by using phylogenetic analysis based on 16S rRNA gene sequence comparisons. Assays for antagonistic interactions among the bacterial strains were performed; bacteria (including at least one strain representative of each OTU identified) were screened for antimicrobial substance production. So, 367 bacterial strains were isolated on marine-agar. On the basis of morphological characteristics, 180 strains were sequenced and 94 OTUs were classified. The dominant phyla were Proteobacteria, Firmicutes and Actinobacteria, with a high abundance of the strains belonging to the genus Psychrobacter. From the antagonistic interactions assays, it could be determined that 22.7% strains were positive for at least one antagonism interaction, 18.3% of them isolated from the sea urchins collected in Morgat. We hypothesize that the bacteria isolated in this study may represent the transitory microbiota of the gastrointestinal tract of P. lividus, and that this microbiota may be related to the diet of this marine invertebrate. Furthermore, our results suggest that chemical antagonism could play a significant role in shaping the bacterial communities within gastrointestinal tract of the sea urchins. In addition, most isolated bacteria may have promising biotechnology applications.


Antimicrobials Biotechnology Culture-dependent approach Gut microbiome Paracentrotus lividus Psychrobacter 



This work was supported by the National Council for Scientific and Technological Development (CNPq), the National Council for the Improvement of Higher Education (CAPES), the Carlos Chagas Filho Foundation for Research Support of Rio de Janeiro State (FAPERJ) to Laport, MS and by a “Crédit de Recherches” grant from the Fonds de la Recherche Scientifique (FRS-FNRS) to George, I. We are also grateful to Science Without Borders, a CNPq Program for the post doctorate scholarship to Laport, MS; and to Prof. Philippe Dubois and Prof. Chantal de Ridder for accepting her in the “Laboratoire de Biologie Marine”, at “Université Libre de Bruxelles”, Belgium.

Compliance with Ethical Standards

Conflict of interest

No conflict of interest is declared.

Supplementary material

284_2017_1389_MOESM1_ESM.xlsx (31 kb)
Supplementary material 1—Culturable bacteria associated with the gut microbiota of the sea urchin (Paracentrotus lividus): Distribution, 16S rRNA gene sequence affiliation, accession numbers of the sequence data deposited in the GenBank database, abundance and taxonomic assignment of bacterial OTUs (XLSX 30 KB)
284_2017_1389_MOESM2_ESM.xlsx (45 kb)
Supplementary material 2—Distribution, abundance and taxonomic assignment of bacterial OTUs with just one sequence, Distribution, abundance and taxonomic assignment of bacterial OTUs with two or more sequences (XLSX 44 KB)
284_2017_1389_MOESM3_ESM.xlsx (11 kb)
Supplementary material 3—Antagonistic interactions among bacteria isolated from the gastrointestinal tract (stomach and intestine) of the sea urchins collected in Aber (XLSX 10 KB)
284_2017_1389_MOESM4_ESM.xlsx (13 kb)
Supplementary material 4—Antagonistic interactions among bacteria isolated from the gastrointestinal tract (stomach and intestine) of the sea urchins collected in Morgat (XLSX 13 KB)


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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  • Marinella Silva Laport
    • 1
    • 2
    Email author
  • Mathieu Bauwens
    • 2
  • Marie Collard
    • 2
  • Isabelle George
    • 2
  1. 1.Laboratório de Bacteriologia Molecular e Marinha, Instituto de Microbiologia Paulo de GóesUniversidade Federal do Rio de Janeiro (UFRJ)Rio de JaneiroBrazil
  2. 2.Laboratoire de Biologie MarineUniversité Libre de Bruxelles (ULB)BrusselsBelgium

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