GEO DataSets

(Submitter supplied) Laboratory strains of Saccharmoyces cerevisiae have been widely used as a model for studying eukaryotic cells and mapping the molecular mechanisms of many different human diseases. Industrial wine yeasts, on the other hand, have been selected over hundreds of years on the basis of their adaptation to stringent environmental conditions and the organoleptic properties they confer to wine. Here, we applied a two-factor design to study the response of a standard laboratory strain, CEN.PK.113-7D, and an industrial wine yeast-strain, EC1118, to growth temperature at 15°C and 30°C under 12 nitrogen-limited, anaerobic steady-state chemostat cultures. more...

Organism:

Schizosaccharomyces pombe; Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL2529

12 Samples

Download data: CEL

(Submitter supplied) Here we report the massively parallel cDNA sequencing (RNA-seq) analysis performed using high throughput sequencing of four vineyard yeast strains collected from the vineyards of the “Prosecco di Conegliano-Valdobbiadene” (P283 and P301 strains) and Piave AO (Appellation of origin) (R008 and R103 strains) regions in North East of Italy. Results were compared with RNA-seq performed on a commercial yeast strain (EC1118) and a laboratory strain (S288c). more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by high throughput sequencing

Platform:

GPL15263

12 Samples

Download data: TXT

(Submitter supplied) Our study involves a transcriptomic approach to the analysis of industrial yeast metabolism. Historically, among the hundreds of yeast species, Saccharomyces cerevisiae has played an important role in scientific investigations and industrial applications, and it is universally acknowledged as one of the model systems for eukaryotic organisms. Yeast is also an important component of the wine fermentation process and determines various attributes of the final product. more...

Organism:

Schizosaccharomyces pombe; Saccharomyces cerevisiae

Type:

Expression profiling by array

Dataset:

GDS3725

Platform:

GPL2529

43 Samples

Download data: CEL, CHP

Analysis of five industrial wine yeast strains during fermentation. Yeast is an important component of wine fermentation and determines various attributes of the final product. Results provide insight into the differences in wine yeast physiology and metabolism during fermentation.

Organism:

Schizosaccharomyces pombe; Saccharomyces cerevisiae

Type:

Expression profiling by array, count, 5 strain, 3 time sets

Platform:

GPL2529

Series:

GSE11651

43 Samples

Download data: CEL, CHP

(Submitter supplied) An eQTL analysis show that mutations in PDR8 gene in 59A strain versus S288c could trigger expressions variations of QDR2. In order to confirm this result and highlight other gene expression variations associated to PDR8 allelic variation, we performed an allele switch of PDR8 in 59A background (59A PDR8-S288c) and compared the transcriptomic profile of this strain to 59A. The analysis was performed in wine alcoholic fermentation conditions in stationary phase during nitrogen starvation and in alcoholic stress. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL16012

6 Samples

Download data: GPR

(Submitter supplied) We performed here the transcriptomic profile of 44 segregants from a cross between S288c and 59A (a spore of EC1118 strain). The analysis was performed in wine fermentation condition in stationary phase during nitrogen starvation and in alcoholic stress. These data, associated with an individual genotyping by Affymetrix array allow us to highlight genetic variations involved in perturbation of regulatory network and fermentative behavior.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL16012

56 Samples

Download data: GPR

(Submitter supplied) DNA microarray analysis was used to profile gene expression in a commercial isolate of Saccharomyces cerevisiae grown in a synthetic grape juice medium under conditions mimicking a natural environment for yeast: High-sugar and variable nitrogen conditions. The high nitrogen condition displayed elevated levels of expression of genes involved in biosynthesis of macromolecular precursors across the time course as compared to low-nitrogen. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platforms:

GPL66 GPL3795

6 Samples

Download data

(Submitter supplied) Raw expression values (CHP data) for transcriptional profiling of the response of Saccharomyces cerevisiae to challenges with lactic acid at pH 3 and pH 5. Keywords: response to lactic acid

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL90

12 Samples

Download data: CEL, CHP

(Submitter supplied) A time-course transcriptomic experiment was performed in three geographically different wine yeast strains in order to test differences in gene expression as response to different nitrogen availability

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL13620

25 Samples

Download data: TXT

(Submitter supplied) Comparison between two commercial wine yeast strains (UCD522 and P29) differing in their production of H2S during wine fermentation.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platforms:

GPL4069 GPL8589

2 Samples

Download data: TXT

(Submitter supplied) We study the genetics, including microarray karyotyping using comparative genomic hybridization, to explore global changes in the genomic DNA of seven S. cerevisiae strains related to traditional fermentations of very different sources comparing to the sequenced S. cerevisiae laboratory strain (S288C). Our final goal is to determine the adaptive evolution of properties of biotechnological interest in Saccharomyces yeasts. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome variation profiling by array

Platform:

GPL13945

7 Samples

Download data: GPR

(Submitter supplied) The aim of this study is to phenotype a collection of 27 S. cerevisiae commercial wine strains growing within temperatures (4-45ºC) in both minimal media (SD) and synthetic must (SM) and, taking into account µmax value, to select two strains with divergent phenotype in their capacity to grow at low temperature. To confirm this differential phenotype, we design a competition between both strains during wine fermentations. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL10039

4 Samples

Download data: GPR, TXT, XLS

(Submitter supplied) The objective of this work is to identify, in enological condition, differences in transcriptomic regulation that may explain the differences in strains fermentation properties. For this, we compared the global expression patterns of 8 Saccharomyces cerevisiae strains with different nitrogen requirement (L2868, 4CAR1, Fermiflor, Zymasil, MTF1782, 7013, K1M, EC1118). The transcriptome was analyzed on cells fermenting in a nitrogen limited medium containing 100mg.l-1 assimilable nitrogen (SM100) and harvested at stationary phase (45g/L of CO2 produced and corresponding to 6% ethanol). more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL17690

16 Samples

Download data: GPR

(Submitter supplied) We used genome-wide expression analyses to study the response of Saccharomyces cerevisiae to stress throughout a 15-day wine fermentation. Forty percent of the yeast genome significantly changed expression levels to mediate long-term adaptation to an environment in which ethanol is both a stressor and a carbon source. Within this set, we identify a group of 223 genes, designated as the Fermentation Stress Response (FSR), that are dramatically and permanently induced; FSR genes exhibited changes ranging from four-to eighty-fold. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Dataset:

GDS3332

Platform:

GPL90

21 Samples

Download data: CEL

Analysis of Saccharomyces cerevisiae, strain Vin13, subjected to ethanol levels up to 10% during a 15-day wine fermentation. Results provide insight into molecular mechanisms underlying the adaptive response of yeast to the long-term environmental stresses present during alcoholic fermentation.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array, transformed count, 6 stress, 7 time sets

Platform:

GPL90

Series:

GSE8536

21 Samples

Download data: CEL

(Submitter supplied) Gene expression analysis of time course experiment of [1] a synthetic must (nitrogen-rich) fermentation by a natural wine yeast; [2] a synthetic must (nitrogen-poor) fermentation by a natural wine yeast; and [3] a synthetic must (nitrogen-poor) fermentation by a natural wine yeast, supplemented at 72 hours with 200 mg/l of nitrogen. This SuperSeries is composed of the SubSeries listed below.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL3763

38 Samples

Download data

(Submitter supplied) Gene expression analysis of a time course experiment of a synthetic must (nitrogen-poor) fermentation by a natural wine yeast, supplemented at 72 hours with 200 mg/l of nitrogen Keywords: Time course

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL3763

15 Samples

Download data

(Submitter supplied) Gene expression analysis of a time course experiment of a synthetic must (nitrogen-poor) fermentation by a natural wine yeast. Keywords: Time course

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL3763

15 Samples

Download data

(Submitter supplied) Gene expression analysis of a time course experiment of a synthetic must (nitrogen-rich) fermentation by a natural wine yeast. Keywords: Time course

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL3763

14 Samples

Download data

(Submitter supplied) The global transcriptional response of Saccharomyces cerevisiae was investigated in low temperature chemostat cultures grown in carbon or nitrogen limitation. During steady state chemostats, the growth rates and in vivo fluxes were kept constant however the growth-limiting nutrient was significantly higher at 12oC than at 30oC and had significant effects on transcriptional responses. Growth at 12oC resulted in a rearrangement of transporters for the limiting nutrient, where hexose transporters (HXTs) and ammonium permeases (MEPs) were differentially expressed in cultures grown at 30oC in carbon and nitrogen limitations, respectively. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL90

12 Samples

Download data: CEL, EXP