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Comparing the transcriptomes of wine yeast strains: toward understanding the interaction between environment and
Debra Rossouw1, Florian F Bauer
1Department of Viticulture and Oenology, Institute for Wine Biotechnology, University of Stellenbosch, 7600 Stellenbosch, South Africa. debra@sun.ac.za
Applied Microbiology and Biotechnology
|August 28, 2009
Summary
Comparing wine yeast strains Saccharomyces cerevisiae in different media reveals core gene expression changes. This helps understand yeast responses to fermentation and media composition.
Area of Science:
- Microbiology
- Molecular Biology
- Biotechnology
Background:
- Omics approaches are increasingly used for industrial Saccharomyces cerevisiae strains.
- Previous studies often used single strains and media, limiting insights into general vs. specific responses.
- Understanding industrial yeast phenotypes requires analyzing diverse strains and conditions.
Purpose of the Study:
- To analyze transcriptomes of two distinct wine yeast strains.
- To compare gene expression in synthetic (MS300) and real grape must.
- To identify core molecular responses during wine fermentation.
Main Methods:
- Transcriptome analysis of two wine yeast strains.
- Fermentation in synthetic MS300 and real grape must.
- Sampling at three distinct wine fermentation stages.
Main Results:
- Intersection of transcriptome data identified core gene expression changes.
- Strain and media-specific transcriptional responses were delineated.
- MS300 medium proved representative for wine yeast research.
Conclusions:
- Comparative transcriptomics effectively distinguishes general yeast responses from strain/media-specific ones.
- This approach enhances understanding of yeast adaptation to wine fermentation environments.
- Findings support MS300 as a reliable model for industrial wine yeast studies.
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