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Int J Syst Evol Microbiol 58 (2008), 2955-2961; DOI  10.1099/ijs.0.2008/001198-0
© 2008 International Union of Microbiological Societies

Metschnikowia cubensis sp. nov., a yeast species isolated from flowers in Cuba

Abel Fidalgo-Jiménez1,2, Heide-Marie Daniel2, Pierre Evrard2, Cony Decock2 and Marc-André Lachance3

1 Instituto de Ecología y Sistemática (IES), Carretera de Varona, km 31/2 Capdevila, Boyeros, AP 8029, CP 10800, Ciudad de la Habana, Cuba
2 Mycothèque de l'Université catholique de Louvain (MUCL), Member of the Belgian Coordinated Collection of Microorganisms (BCCM), Croix du Sud 3, bte 6, 1348 Louvain-la-Neuve, Belgium
3 Department of Biology, University of Western Ontario, London, ON N6A 5B7, Canada

Correspondence
Heide-Marie Daniel
heide-marie.daniel{at}uclouvain.be

A novel yeast species is described from 19 strains isolated from flowers and insects in three provinces of Cuba. The species is so far known only from Cuba. Characteristic asci and ascospores as well as phylogenetic analysis of the rDNA sequence place the novel species in the genus Metschnikowia. The novel species belongs to the New World subclade of large-spored species of Metschnikowia. Mating tests with other members of the subclade resulted in the formation of sterile asci without ascospores, showing that the Cuban strains represent a distinct biological species. Intraspecies matings lead to the production of fertile asci containing large needle-shaped ascospores. The novel species was further distinguished from its close relatives by rDNA sequences and PCR fingerprinting using primers derived from mini- and microsatellites. We propose the name Metschnikowia cubensis sp. nov. and designate MUCL 45753T (=CRGF 279T =CBS 10832T, h+) as the type strain and MUCL 45751 (=CRGF 278 =CBS 10833, h–) as the allotype.

The GenBank/EMBL/DDBJ accession number for the large-subunit rDNA sequence of strain MUCL 45753T is EU143316.

Further details on strain collection and results of mating tests are available as supplementary material with the online version of this paper.






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