GEO DataSets

Analysis of chemostat cultures sparged with 79% or 100% carbon dioxide (CO2). During fermentation and ethanol production, CO2 is produced, saturating the fermentative broth. Results provide insight into the mechanisms underlying CO2 stress.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array, count, 4 dose, 2 growth protocol sets

Platform:

GPL90

Series:

GSE8900

18 Samples

Download data: CEL, EXP

(Submitter supplied) Physiological effects of carbon dioxide and impact on genome-wide transcript profiles were analysed in chemostat cultures of Saccharomyces cerevisiae. In anaerobic, glucose-limited chemostat cultures grown at atmospheric pressure, cultivation under CO2-saturated conditions had only a marginal (<10%) impact on the biomass yield. Conversely, a 25% decrease of the biomass yield was found in aerobic, glucose-limited chemostat cultures aerated with a mixture of 79% CO2 and 21% O2. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Dataset:

GDS2969

Platform:

GPL90

18 Samples

Download data: CEL, EXP

(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) Prolonged cultivation of Saccharomyces cerevisiae in aerobic, glucose-limited chemostat cultures (dilution rate, 0·10 h–1) resulted in a progressive decrease of the residual glucose concentration (from 20 to 8 mg l–1 after 200 generations). This increase in the affinity for glucose was accompanied by a fivefold decrease of fermentative capacity, and changes in cellular morphology. These phenotypic changes were retained when single-cell isolates from prolonged cultures were used to inoculate fresh chemostat cultures, indicating that genetic changes were involved. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL90

6 Samples

Download data: CEL, EXP

(Submitter supplied) In contrast to batch cultivation, chemostat cultivation allows the identification of carbon source responses without interference by carbon-catabolite repression, accumulation of toxic products, and differences in specific growth rate. This study focuses on the yeast Saccharomyces cerevisiae, grown in aerobic, carbon-limited chemostat cultures. Genome-wide transcript levels and in vivo fluxes were compared for growth on two sugars, glucose and maltose, and for two C2-compounds, ethanol and acetate. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL90

12 Samples

Download data: CEL, EXP

(Submitter supplied) The goal of this study was to study this interaction by analyzing genome-wide transcriptional responses to four different nutrient-limitation regimes under aerobic and anaerobic conditions in chemostat cultures of S. cerevisiae. This ‘two-dimensional’ approach resulted in a new, robust set of ‘anaerobic’ and ‘aerobic’ signature transcripts for S. cerevisiae, as well as to a refinement of previous reports on nutrient-responsive genes. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Dataset:

GDS777

Platform:

GPL90

24 Samples

Download data: CEL, EXP

Expression profiling of MATa CEN.PK113-7D chemostat cultures grown either aerobically or anaerobically in media limited for either glucose, nitrogen, phosphorous, or sulfur. Results provide insight into the interaction between oxygen and nutrient responsive pathways.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array, count, 4 growth protocol, 2 stress sets

Platform:

GPL90

Series:

GSE1723

24 Samples

Download data: CEL, EXP

(Submitter supplied) Zinc is indispensable for the catalytic activity and structural stability of many proteins, and its deficiency can have severe consequences for microbial growth in natural and industrial environments. For example, Zn depletion in wort negatively affects beer fermentation and quality. Several studies have investigated yeast adaptation to low Zn supply, but were all performed in batch cultures, where specific growth rate depends on Zn availability. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL90

6 Samples

Download data: CEL, CHP, EXP

(Submitter supplied) Zinc is indispensable for the catalytic activity and structural stability of many proteins, and its deficiency can have severe consequences for microbial growth in natural and industrial environments. For example, Zn depletion in wort negatively affects beer fermentation and quality. Several studies have investigated yeast adaptation to low Zn supply, but were all performed in batch cultures, where specific growth rate depends on Zn availability. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL90

3 Samples

Download data: CEL, CHP, EXP

(Submitter supplied) Zinc is indispensable for the catalytic activity and structural stability of many proteins, and its deficiency can have severe consequences for microbial growth in natural and industrial environments. For example, Zn depletion in wort negatively affects beer fermentation and quality. Several studies have investigated yeast adaptation to low Zn supply, but were all performed in batch cultures, where specific growth rate depends on Zn availability. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL90

6 Samples

Download data: CEL, CHP, EXP

(Submitter supplied) Transcriptional regulation of branched-chain amino acid metabolism in Saccharomyces cerevisiae involves two key regulator proteins, Leu3p and Gcn4p. Leu3p is a pathway-specific regulator, known to regulate six genes involved in branched-chain amino acid metabolism and one gene in nitrogen assimilation. Gcn4p is a global regulator, involved in the general response to amino acid and purine starvation. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Dataset:

GDS1103

Platform:

GPL90

12 Samples

Download data

Analysis of leu3 mutant grown in either limited ethanol or limited ammonium media. Leu3p regulates a gene involved in nitrogen assimilation and six genes involved in branched chain amino acid metabolism. Results provide insight into the role of Leu3p in gene regulation.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array, count, 2 genotype/variation, 2 growth protocol sets

Platform:

GPL90

Series:

GSE2076

12 Samples

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(Submitter supplied) Raw expression values (CHP data) for transcriptional profiling of the response of Saccharomyces cerevisiae to challenges with various weak organic acids Keywords: response to weak organic acids

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Dataset:

GDS2925

Platform:

GPL90

15 Samples

Download data: CEL

Analysis of anaerobic chemostat cultures of Saccharomyces cerevisae exposed to one of several weak organic acids. Weak organic acids are used as preservatives in food and beverages. Yeasts are able to proliferate at the maximum legal dosage of such preservatives.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array, count, 5 stress sets

Platform:

GPL90

Series:

GSE5926

15 Samples

Download data: CEL

(Submitter supplied) The transcription factor Cst6p in Saccharomyces cerevisiae has been reported to play important roles in several biological processes. However, the genome-wide targets of Cst6p and the mechanisms for its physiological functions remain unknown. Here, we mapped the genome-wide binding sites of Cst6p with ChIP-exo at high resolution. Cst6p binds to the promoter regions of 59 genes with various biological functions when cells are grown on ethanol, but hardly binds to the genome on glucose. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19756

4 Samples

Download data: XLSX

(Submitter supplied) The capacity of respiring cultures of Saccharomyces cerevisiae to instantaneously switch to fast alcoholic fermentation upon a transfer to anaerobic sugar-excess conditions is a key characteristic of Saccharomyces cerevisiae in many of its industrial applications. This transition was studied by exposing aerobic glucose-limited chemostat cultures grown at a low specific growth rate to two simultaneous perturbations: oxygen depletion and relief of glucose limitation. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL90

13 Samples

Download data: CEL, CHP, EXP

(Submitter supplied) Saccharomyces cerevisiae is unique among yeasts for its ability to grow rapidly in the complete absence of oxygen. S. cerevisiae is therefore an ideal eukaryotic model to study physiological adaptation to anaerobiosis. Recent transcriptome analyses have identified hundreds of genes that are transcriptionally regulated by oxygen availability but the relevance of this cellular response has not been systematically investigated at the key control level of the proteome. more...

Organism:

Saccharomyces cerevisiae

Type:

Other

Platform:

GPL4992

1 Sample

Download data: XLS

(Submitter supplied) In Saccharomyces cerevisiae, glycogen and trehalose are important reserve carbohydrates that accumulate under nutrient limitation in batch cultures. An inherent draw-back of batch studies is that specific growth rate and substrate and product concentrations are variable over time and between cultures. The aim of this present study was to identify the nutritional requirements associated with high accumulation of reserve carbohydrates at a fixed specific growth rate (0.10 h-1) in anaerobic chemostat cultures that were limited by one of five different nutrients (carbon, nitrogen, sulfur, phosphorus or zinc). more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL90

21 Samples

Download data: CEL, CHP, EXP

(Submitter supplied) Response of Saccharomyces cerevisiae engineered for xylose metabolism to changes in carbon source and aeration Keywords: ordered

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Dataset:

GDS908

Platform:

GPL90

6 Samples

Download data

Strain YSX3 engineered for D-xylose utilization and respiration-deficient mutant FPL-YSX3P were grown under full aeration or oxygen limitation, with glucose or xylose as a carbon source.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array, count, 2 growth protocol, 2 protocol, 2 strain sets

Platform:

GPL90

Series:

GSE835

6 Samples

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