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PeerJ. 2014 Jun 17;2:e419. doi: 10.7717/peerj.419. eCollection 2014.

Diversity and antimicrobial potential of culturable heterotrophic bacteria associated with the endemic marine sponge Arenosclera brasiliensis.

Author information

  • 1Instituto de Biologia, Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil.
  • 2Faculdade de Tecnologia e Ciências , Salvador, Bahia , Brazil.
  • 3Departamento de Biologia Celular, Universidade de Brasília , Brasília, DF , Brazil.
  • 4Instituto de Biologia, Universidade Federal Fluminense , Niterói, RJ , Brazil.
  • 5Instituto de Química de São Carlos, Universidade de São Paulo , São Carlos, SP , Brazil.
  • 6SAGE-COPPE Centro de Gestão Tecnológica, Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil.
  • 7Instituto de Biologia, Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil ; SAGE-COPPE Centro de Gestão Tecnológica, Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil.

Abstract

Marine sponges are the oldest Metazoa, very often presenting a complex microbial consortium. Such is the case of the marine sponge Arenosclera brasiliensis, endemic to Rio de Janeiro State, Brazil. In this investigation we characterized the diversity of some of the culturable heterotrophic bacteria living in association with A. brasiliensis and determined their antimicrobial activity. The genera Endozoicomonas (N = 32), Bacillus (N = 26), Shewanella (N = 17), Pseudovibrio (N = 12), and Ruegeria (N = 8) were dominant among the recovered isolates, corresponding to 97% of all isolates. Approximately one third of the isolates living in association with A. brasiliensis produced antibiotics that inhibited the growth of Bacillus subtilis, suggesting that bacteria associated with this sponge play a role in its health.

KEYWORDS:

Antimicrobial activity; Bacteria; Porifera; Symbiont

PMID:
25024903
[PubMed]
PMCID:
PMC4081303
Free PMC Article
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