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Applied and Environmental Microbiology, April 2008, p. 2144-2152, Vol. 74, No. 7
0099-2240/08/$08.00+0     doi:10.1128/AEM.02396-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Natural Populations of Saccharomyces kudriavzevii in Portugal Are Associated with Oak Bark and Are Sympatric with S. cerevisiae and S. paradoxus{triangledown}

José Paulo Sampaio* and Paula Gonçalves

Centro de Recursos Microbiológicos, Departmento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal

Received 24 October 2007/ Accepted 5 February 2008

Here we report the isolation of four Saccharomyces species (former Saccharomyces sensu stricto group) from tree bark. The employment of two temperatures (10°C in addition to the more commonly used 30°C) resulted in the isolation of S. kudriavzevii and S. uvarum, two species that grow at low temperatures, in addition to S. cerevisiae and S. paradoxus. A clear bias was found toward the bark of certain trees, particularly certain oak species. Very often, more than one Saccharomyces species was found in one locality and occasionally even in the same bark sample. Our evidence strongly suggests that (markedly) different growth temperature preferences play a fundamental role in the sympatric associations of Saccharomyces species uncovered in this survey. S. kudriavzevii was isolated at most of the sites sampled in Portugal, indicating that the geographic distribution of this species is wider than the distribution assumed thus far. However, the Portuguese S. kudriavzevii population exhibited important genetic differences compared to the type strain of the species that represents a Japanese population. In this study, S. kudriavzevii stands out as the species that copes better with low temperatures.

* Corresponding author. Mailing address: Centro de Recursos Microbiológicos, Departmento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal. Phone: 351 21 2948300. Fax: 351 21 2948530. E-mail: jss{at}fct.unl.pt

{triangledown} Published ahead of print on 15 February 2008.

Applied and Environmental Microbiology, April 2008, p. 2144-2152, Vol. 74, No. 7
0099-2240/08/$08.00+0     doi:10.1128/AEM.02396-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Belloch, C., Perez-Torrado, R., Gonzalez, S. S., Perez-Ortin, J. E., Garcia-Martinez, J., Querol, A., Barrio, E. (2009). Chimeric Genomes of Natural Hybrids of Saccharomyces cerevisiae and Saccharomyces kudriavzevii. Appl. Environ. Microbiol. 75: 2534-2544 [Abstract] [Full Text]  


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