Microbiota Associated with Posidonia oceanica in Western Mediterranean Sea

Ester Marco-Noales*, Mónica Ordax, Armando Delgado, María M. López, María José Saavedra, Antonia Martínez-Murcia, Neus Garcias, Núria Marbà, Carlos M. Duarte

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

3 Scopus citations


Culturable microbiota associated with the seagrass Posidonia oceanica from the Western Mediterranean coast was identified and characterized, in order to determine if certain bacterial species can be related and/or contribute to health status of the meadows. The most abundant genera recovered from rhizome, roots and leaves, according to 16S rDNA sequencing, were Vibrio spp., Pseudoalteromonas spp., and Marinomonas spp. A preliminary screening of selected strains for a phytopathogenicity trait, the hypersensitive response on tobbaco leaves, was not successful. The most remarkable finding was that isolates of Pseudoalteromonas spp. were the most abundant ones in the meadows with the highest seagrass mortality rate, which suggests a putative contribution of these bacteria to the meadow decline.

Original languageEnglish (US)
Title of host publicationModern Multidisciplinary Applied Microbiology
Subtitle of host publicationExploiting Microbes and Their Interactions
PublisherJohn Wiley and Sons
Number of pages6
ISBN (Print)3527316116, 9783527316113
StatePublished - Feb 21 2008
Externally publishedYes


  • Microbiota
  • Posidonia oceanica meadows
  • Pseudoalteromonas spp. Vibrio spp. Marinomonas spp
  • Seagrass decline
  • Seagrass mortality rate

ASJC Scopus subject areas

  • General Immunology and Microbiology


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