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FEMS Microbiol Ecol. 2010 Jul 1;73(1):121-33. doi: 10.1111/j.1574-6941.2010.00881.x. Epub 2010 Apr 7.

Marine culturable yeasts in deep-sea hydrothermal vents: species richness and association with fauna.

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Laboratoire Universitaire de Biodiversité et Ecologie Microbienne (EA3882), IFR 148, Université Européenne de Bretagne, Université de Brest, ESMISAB, Technopole Brest-Iroise, Plouzané, France.


Investigations of the diversity of culturable yeasts at deep-sea hydrothermal sites have suggested possible interactions with endemic fauna. Samples were collected during various oceanographic cruises at the Mid-Atlantic Ridge, South Pacific Basins and East Pacific Rise. Cultures of 32 isolates, mostly associated with animals, were collected. Phylogenetic analyses of 26S rRNA gene sequences revealed that the yeasts belonged to Ascomycota and Basidiomycota phyla, with the identification of several genera: Rhodotorula, Rhodosporidium, Candida, Debaryomyces and Cryptococcus. Those genera are usually isolated from deep-sea environments. To our knowledge, this is the first report of yeasts associated with deep-sea hydrothermal animals.

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