Environmental Saccharomyces cerevisiae strains are crucially important, as they represent the large pool from which domesticated industrial yeasts have been selected, and vineyard strains can be considered the genetic reservoir from which industrial wine strains with strong fermentative behaviour are selected. Four vineyard strains with different fermentation performances were chosen from a large collection of strains isolated from Italian vineyards. Their genomes were sequenced to identify how genetic variations influence gene expression during fermentation and to clarify the evolutionary relationship between vineyard isolates and industrial wine strains. RNA sequencing was performed on the four vineyard strains, as well as on the industrial wine yeast strain EC1118 and on the laboratory strain S288c, at two stages of fermentation. We showed that there was a large gene cluster with variable promoter regions modifying gene expression in the strains. Our results indicate that it is the evolvability of the yeast promoter regions, rather than structural variations or strain-specific genes, that is the main cause of the differences in gene expression. This promoter variability, determined by variable tandem repeats and a high number of single-nucleotide polymorphisms together with 49 differentially expressed transcription factors, explained the strong phenotypic differences in the strains.
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Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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Site | Modification | Modifier | Source | Reference |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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