Title: Assessing genetic diversity in Brettanomyces yeasts using DNA fingerprinting and whole genome sequencing
Authors: Crauwels, Sam
Zhu, Bo
Steensels, Jan
Busschaert, Pieter
De Samblanx, Gorik
Marchal, Kathleen
Willems, Kris
Verstrepen, Kevin #
Lievens, Bart # ×
Issue Date: Jul-2014
Publisher: American Society for Microbiology (ASM)
Series Title: Applied and Environmental Microbiology vol:80 pages:4398-4413
Abstract: Brettanomyces yeasts, with the species Brettanomyces (Dekkera) bruxellensis being the most important one, are generally reported to be spoilage yeasts in the beer and wine industry due to the production of phenolic off flavors. However, B. bruxellensis is also known to be a beneficial contributor in certain fermentation processes, such as the production of certain specialty beers. Nevertheless, despite its economic importance, Brettanomyces yeasts remain poorly understood at the genetic and genomic levels. In this study, the genetic relationship between more than 50 Brettanomyces strains from all presently known species and from several sources was studied using a combination of DNA fingerprinting techniques. This revealed an intriguing correlation between the B. bruxellensis fingerprints and the respective isolation source. To further explore this relationship, we sequenced a (beneficial) beer isolate of B. bruxellensis (VIB X9085; ST05.12/22) and compared its genome sequence with the genome sequences of two wine spoilage strains (AWRI 1499 and CBS 2499). ST05.12/22 was found to be substantially different from both wine strains, especially at the level of single nucleotide polymorphisms (SNPs). In addition, there were major differences in the genome structures between the strains investigated, including the presence of large duplications and deletions. Gene content analysis revealed the presence of 20 genes which were present in both wine strains but absent in the beer strain, including many genes involved in carbon and nitrogen metabolism, and vice versa, no genes that were missing in both AWRI 1499 and CBS 2499 were found in ST05.12/22. Together, this study provides tools to discriminate Brettanomyces strains and provides a first glimpse at the genetic diversity and genome plasticity of B. bruxellensis.
ISSN: 0099-2240
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Bioengineering Technology TC, Technology Campus De Nayer Sint-Katelijne-Waver
Centre of Microbial and Plant Genetics
Gynaecological Oncology
Electrical Engineering (ESAT) TC, Technology Campus De Nayer Sint-Katelijne-Waver
Technologiecluster ESAT Elektrotechnische Engineering
Technologiecluster Bioengineering Technologie
× corresponding author
# (joint) last author

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