Homeostatic Adjustment and Metabolic Remodeling in Glucose-limited Yeast Cultures Time Course 2
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ABSTRACT:
ORGANISM(S): Saccharomyces cerevisiae
PROVIDER: GSE3206 | GEO | 2005/08/26
SECONDARY ACCESSION(S): PRJNA104803
REPOSITORIES: GEO
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Project description:Time course of batch growth. Reference (channel 1) was a culture grown in MD medium with 2.4 g/L glucose, with 5 slpm air-flow, stirring at 400 rpm and a constant 300C temperature, dilution 0.25 volumes/hour. The experimental (channel 2) time course samples were grown in batch for the indicated time. The "Low-D chemostat vs. High-D chemostat" hybridization's channel 2 sample was grown in a chemostat, with a dilution rate of 0.05 volumes/hour; it is most similar to the time course samples taken between 8 and 9 hours. Groups of assays that are related as part of a time series. FactorCategory: Elapsed Time; name: Elapsed Time; Measurement: time(absolute) 0 h; name: 45181_Elapsed Time; Measurement: time(absolute) 8.5 h; name: 38150_Elapsed Time; Measurement: time(absolute) 8.75 h; name: 38151_Elapsed Time; Measurement: time(absolute) 9 h; name: 38152_Elapsed Time; Measurement: time(absolute) 9.25 h; name: 38153_Elapsed Time; Measurement: time(absolute) 7.25 h; name: 38145_Elapsed Time; Measurement: time(absolute) 9.5 h; name: 38154_Elapsed Time; Measurement: time(absolute) 7.5 h; name: 38146_Elapsed Time; Measurement: time(absolute) 9.75 h; name: 38155_Elapsed Time; Measurement: time(absolute) 7.75 h; name: 38147_Elapsed Time; Measurement: time(absolute) 10 h; name: 38156_Elapsed Time; Measurement: time(absolute) 8 h; name: 38148_Elapsed Time; Measurement: time(absolute) 8.25 h; name: 38149_Elapsed Time FactorCategory: Growth Condition; name: Growth Condition; Growth Condition: chemostat dilution control; name: 45181_Growth Condition; Growth Condition: batch; name: 38150_Growth Condition; Growth Condition: batch; name: 38151_Growth Condition; Growth Condition: batch; name: 38152_Growth Condition; Growth Condition: batch; name: 38153_Growth Condition; Growth Condition: batch; name: 38145_Growth Condition; Growth Condition: batch; name: 38154_Growth Condition; Growth Condition: batch; name: 38146_Growth Condition; Growth Condition: batch; name: 38155_Growth Condition; Growth Condition: batch; name: 38147_Growth Condition; Growth Condition: batch; name: 38156_Growth Condition; Growth Condition: batch; name: 38148_Growth Condition; Growth Condition: batch; name: 38149_Growth Condition Keywords: time_series_design
2005-08-26 | GSE3205 | GEO
Project description:Time course of batch growth. Reference (channel 1) was a culture grown in MD medium with 2.4 g/L glucose, with 5 slpm air-flow, stirring at 400 rpm and a constant 300C temperature, dilution 0.25 volumes/hour. The experimental (channel 2) samples were grown in batch for the indicated time. Groups of assays that are related as part of a time series. FactorCategory: Elapsed Time; name: Elapsed Time; Measurement: time(absolute) 6 h; name: 34357_Elapsed Time; Measurement: time(absolute) 10.5 h; name: 34365_Elapsed Time; Measurement: time(absolute) 8 h; name: 34358_Elapsed Time; Measurement: time(absolute) 9 h; name: 34359_Elapsed Time; Measurement: time(absolute) 11 h; name: 34368_Elapsed Time; Measurement: time(absolute) 9.5 h; name: 34360_Elapsed Time; Measurement: time(absolute) 10 h; name: 34362_Elapsed Time Computed
2005-08-26 | E-GEOD-3206 | biostudies-arrayexpress
Project description:Time course of batch growth. Reference (channel 1) was a culture grown in MD medium with 2.4 g/L glucose, with 5 slpm air-flow, stirring at 400 rpm and a constant 300C temperature, dilution 0.25 volumes/hour. The experimental (channel 2) time course samples were grown in batch for the indicated time. The "Low-D chemostat vs. High-D chemostat" hybridization's channel 2 sample was grown in a chemostat, with a dilution rate of 0.05 volumes/hour; it is most similar to the time course samples taken between 8 and 9 hours. Groups of assays that are related as part of a time series. FactorCategory: Elapsed Time; name: Elapsed Time; Measurement: time(absolute) 0 h; name: 45181_Elapsed Time; Measurement: time(absolute) 8.5 h; name: 38150_Elapsed Time; Measurement: time(absolute) 8.75 h; name: 38151_Elapsed Time; Measurement: time(absolute) 9 h; name: 38152_Elapsed Time; Measurement: time(absolute) 9.25 h; name: 38153_Elapsed Time; Measurement: time(absolute) 7.25 h; name: 38145_Elapsed Time; Measurement: time(absolute) 9.5 h; name: 38154_Elapsed Time; Measurement: time(absolute) 7.5 h; name: 38146_Elapsed Time; Measurement: time(absolute) 9.75 h; name: 38155_Elapsed Time; Measurement: time(absolute) 7.75 h; name: 38147_Elapsed Time; Measurement: time(absolute) 10 h; name: 38156_Elapsed Time; Measurement: time(absolute) 8 h; name: 38148_Elapsed Time; Measurement: time(absolute) 8.25 h; name: 38149_Elapsed Time FactorCategory: Growth Condition; name: Growth Condition; Growth Condition: chemostat dilution control; name: 45181_Growth Condition; Growth Condition: batch; name: 38150_Growth Condition; Growth Condition: batch; name: 38151_Growth Condition; Growth Condition: batch; name: 38152_Growth Condition; Growth Condition: batch; name: 38153_Growth Condition; Growth Condition: batch; name: 38145_Growth Condition; Growth Condition: batch; name: 38154_Growth Condition; Growth Condition: batch; name: 38146_Growth Condition; Growth Condition: batch; name: 38155_Growth Condition; Growth Condition: batch; name: 38147_Growth Condition; Growth Condition: batch; name: 38156_Growth Condition; Growth Condition: batch; name: 38148_Growth Condition; Growth Condition: batch; name: 38149_Growth Condition Computed
2005-08-26 | E-GEOD-3205 | biostudies-arrayexpress
Project description:Time course of batch growth. Reference (channel 1) was a culture grown in MD medium with 2.4 g/L glucose, with 5 slpm air-flow, stirring at 400 rpm and a constant 300C temperature, dilution 0.25 volumes/hour. The experimental (channel 2) samples were grown in batch for the indicated time.
2005-08-23 | E-SMDB-3253 | biostudies-arrayexpress
Project description:Time course of batch growth. Reference (channel 1) was a culture grown in MD medium with 2.4 g/L glucose, with 5 slpm air-flow, stirring at 400 rpm and a constant 300C temperature, dilution 0.25 volumes/hour. The experimental (channel 2) time course samples were grown in batch for the indicated time. The "Low-D chemostat vs. High-D chemostat" hybridization's channel 2 sample was grown in a chemostat, with a dilution rate of 0.05 volumes/hour; it is most similar to the time course samples taken between 8 and 9 hours.
2005-08-23 | E-SMDB-3252 | biostudies-arrayexpress
Project description:Time courses of Streptomyces CH999/pKOS011-26 and CH999/pKOS011-26* the low and high copy number strains, respectively, to examine gene expression differences between these two strains. Of particular interest were the transcript levels of the activator gene actII-ORF4 and the polyketide synthase gene cluster eryA. Mycelia were grown in 50 mL R5 liquid medium with thiostrepton drug selection at 50 micrograms per mL in a 30 degrees Celsius shaker incubator. mRNA were harvested at the time points indicated. These data show that actII-ORF4 and eryA transcripts were more highly expressed in the high copy number strain than in the low copy number strain. Groups of assays that are related as part of a time series. Strain Name Elapsed Time: Hours after inoculation Keywords: time_series_design
2007-01-08 | GSE6096 | GEO
Project description:This SuperSeries is composed of the following subset Series: GSE3205: Homeostatic Adjustment and Metabolic Remodeling in Glucose-limited Yeast Cultures Time Course 1 GSE3206: Homeostatic Adjustment and Metabolic Remodeling in Glucose-limited Yeast Cultures Time Course 2 Abstract: We studied the physiological response to glucose limitation in batch and steady-state (chemostat) cultures of Saccharomyces cerevisiae by following global patterns of gene expression. Glucose-limited batch cultures of yeast go through two sequential exponential growth phases, beginning with a largely fermentative phase, followed by an essentially completely aerobic use of residual glucose and evolved ethanol. Judging from the patterns of gene expression, the state of the cells growing at steady state in glucose-limited chemostats corresponds most closely with the state of cells in batch cultures just before they undergo this "diauxic shift." Essentially the same pattern was found between chemostats having a fivefold difference in steady-state growth rate (the lower rate approximating that of the second phase respiratory growth rate in batch cultures). Although in both cases the cells in the chemostat consumed most of the glucose, in neither case did they seem to be metabolizing it primarily through respiration. Although there was some indication of a modest oxidative stress response, the chemostat cultures did not exhibit the massive environmental stress response associated with starvation that also is observed, at least in part, during the diauxic shift in batch cultures. We conclude that despite the theoretical possibility of a switch to fully aerobic metabolism of glucose in the chemostat under conditions of glucose scarcity, homeostatic mechanisms are able to carry out metabolic adjustment as if fermentation of the glucose is the preferred option until the glucose is entirely depleted. These results suggest that some aspect of actual starvation, possibly a component of the stress response, may be required for triggering the metabolic remodeling associated with the diauxic shift. Refer to individual Series
2006-03-07 | E-GEOD-4398 | biostudies-arrayexpress
Project description:Synchronized C. elegans cultures of three geontypes -- wildype N2, daf-2(e1370) and sma-6(wk7) -- were prepared using standard techniques (http://cmgm.stanford.edu/~kimlab/index_methods.html). Live young adult worms were split between NG plates pre-seeded with the non-pathogenic E. coli strain OP50 or the Pseudomonas aeruginosa clinical isolate PA14 and incubated at 25C for 4 or 24 hours before harvesting. This experiment was repeated at least three times on independent occasions. cDNA probes were prepared from experimental samples and from reference mRNA extracted from mixed stage wild type worms grown at 25C, and were labeled with Cy3 or Cy5, as indicated. A reference experiement design type is where all samples are compared to a common reference. Elapsed Time: Time Infection: Exposure to the non-pathogenic E. coli strain OP50 or to the pathogenic Pseudomonas aeruginosa strain PA14 Strain Name: C. elegans wildtype strain N2 or the immune pathway mutants daf-2(e1370) or sma-6(wk7) Keywords: reference_design
2008-11-06 | GSE13473 | GEO
Project description:Abstract: We studied the physiological response to glucose limitation in batch and steady-state (chemostat) cultures of Saccharomyces cerevisiae by following global patterns of gene expression. Glucose-limited batch cultures of yeast go through two sequential exponential growth phases, beginning with a largely fermentative phase, followed by an essentially completely aerobic use of residual glucose and evolved ethanol. Judging from the patterns of gene expression, the state of the cells growing at steady state in glucose-limited chemostats corresponds most closely with the state of cells in batch cultures just before they undergo this "diauxic shift." Essentially the same pattern was found between chemostats having a fivefold difference in steady-state growth rate (the lower rate approximating that of the second phase respiratory growth rate in batch cultures). Although in both cases the cells in the chemostat consumed most of the glucose, in neither case did they seem to be metabolizing it primarily through respiration. Although there was some indication of a modest oxidative stress response, the chemostat cultures did not exhibit the massive environmental stress response associated with starvation that also is observed, at least in part, during the diauxic shift in batch cultures. We conclude that despite the theoretical possibility of a switch to fully aerobic metabolism of glucose in the chemostat under conditions of glucose scarcity, homeostatic mechanisms are able to carry out metabolic adjustment as if fermentation of the glucose is the preferred option until the glucose is entirely depleted. These results suggest that some aspect of actual starvation, possibly a component of the stress response, may be required for triggering the metabolic remodeling associated with the diauxic shift. This SuperSeries is composed of the SubSeries listed below.
2006-03-08 | GSE4398 | GEO
Project description:Synchronized C. elegans cultures of three geontypes -- wildype N2, daf-2(e1370) and sma-6(wk7) -- were prepared using standard techniques (http://cmgm.stanford.edu/~kimlab/index_methods.html). Live young adult worms were split between NG plates pre-seeded with the non-pathogenic E. coli strain OP50 or the Pseudomonas aeruginosa clinical isolate PA14 and incubated at 25C for 4 or 24 hours before harvesting. This experiment was repeated at least three times on independent occasions. cDNA probes were prepared from experimental samples and from reference mRNA extracted from mixed stage wild type worms grown at 25C, and were labeled with Cy3 or Cy5, as indicated. A reference experiement design type is where all samples are compared to a common reference. Elapsed Time: Time Infection: Exposure to the non-pathogenic E. coli strain OP50 or to the pathogenic Pseudomonas aeruginosa strain PA14 Strain Name: C. elegans wildtype strain N2 or the immune pathway mutants daf-2(e1370) or sma-6(wk7) Keywords: reference_design Computed
2008-11-05 | E-GEOD-13473 | biostudies-arrayexpress