A new Thraustochytrid, strain Fng1, isolated from the surface mucus of the hermatypic coral Fungia granulosa

Moshe Harel, Eitan Ben-Dov, Diana Rasoulouniriana, Nachshon Siboni, Esti Kramarsky-Winter, Yossi Loya, Ze'Ev Barak, Zeev Wiesman, Ariel Kushmaro*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Recent evidence suggests that there is a dynamic microbial biota living on the surface and in the mucus layer of many hermatypic coral species that plays an essential role in coral well-being. Most of the studies published to date emphasize the importance of prokaryotic communities associated with the coral mucus in coral health and disease. In this study, we report the presence of a protist (Fng1) in the mucus of the hermatypic coral Fungia granulosa from the Gulf of Eilat. This protist was identified morphologically and molecularly as belonging to the family Thraustochytridae (phylum Stramenopile, order Labyrinthulida), a group of heterotrophs widely distributed in the marine environment. Morphological examination of this strain revealed a nonmotile organism c. 35 μm in diameter, which is able to thrive on carbon-deprived media, and whose growth and morphology are inoculum dependent. Its fatty acid production profile revealed an array of polyunsaturated fatty acids. A similar protist was also isolated from the mucus of the coral Favia sp. In light of these findings, its possible contribution to the coral holobiont is discussed.

Original languageEnglish
Pages (from-to)378-387
Number of pages10
JournalFEMS Microbiology Ecology
Volume64
Issue number3
DOIs
StatePublished - Jun 2008

Keywords

  • Coral-eukaryotic association
  • Fungia granulosa
  • Labyrinthulida
  • PUFA
  • Stramenopiles
  • Thraustochytridae

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