title: Unravelling the microbiome of eggs of the endangered sea turtle Eretmochelys imbricata identifies bacteria with activity against the emerging pathogen Fusarium falciforme.
abstract: Habitat bioaugmentation and introduction of protective microbiota have been proposed as potential conservation strategies to rescue endangered mammals and amphibians from emerging diseases. For both strategies, insight into the microbiomes of the endangered species and their habitats is essential. Here, we sampled nests of the endangered sea turtle species Eretmochelys imbricata that were infected with the fungal pathogen Fusarium falciforme. Metagenomic analysis of the bacterial communities associated with the shells of the sea turtle eggs revealed approximately 16,664 operational taxonomic units, with Proteobacteria, Actinobacteria, Firmicutes and Bacteroidetes as the most dominant phyla. Subsequent isolation of Actinobacteria from the eggshells led to the identification of several genera (Streptomyces, Amycolaptosis, Micromomospora Plantactinospora and Solwaraspora) that inhibit hyphal growth of the pathogen F. falciforme. These bacterial genera constitute a first set of microbial indicators to evaluate the potential role of microbiota in conservation of endangered sea turtle species.
authors.affiliation: Departamento de Micología, Real Jardín Botánico-CSIC, Madrid, Spain.
authors.forename: Jullie M
authors.initials: JM
authors.lastname: Sarmiento-Ramírez
authors.affiliation: Laboratory of Phytopathology, Wageningen University, Wageningen, The Netherlands.
authors.forename: Menno
authors.initials: M
authors.lastname: van der Voort
authors.affiliation: Laboratory of Phytopathology, Wageningen University, Wageningen, The Netherlands; Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, The Netherlands.
authors.forename: Jos M
authors.initials: JM
authors.lastname: Raaijmakers
authors.affiliation: Departamento de Micología, Real Jardín Botánico-CSIC, Madrid, Spain.
authors.forename: Javier
authors.initials: J
authors.lastname: Diéguez-Uribeondo
mesh_terms: D000818:Animals; D001419:Bacteria; D056727:Endangered Species; D005670:Fusarium; D064307:Microbiota / Q000502:physiology*; D010063:Ovum; D014426:Turtles / Q000382:microbiology*
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