Dataset Information


Transcription profiling of S. cerevisiae exposed to the sudden addition of glucose - short term perturbation

ABSTRACT: Study of the short term (within the first 330 seconds) transcriptional response of S.cerevisiae upon a sudden addition of glucose. Experiment Overall Design: Chemostat cultivation – Saccharomyces cerevisiae (CEN PK 113-7D) was cultivated in an aerobic carbon-limited chemostat culture in a 7-litres fermentor (Applikon, The Netherlands) with a working volume of 4-l on the adapted doubled mineral medium (Verduyn et al., 1992) with 27.1 g.l-1 of glucose and 1.42 g.l-1 of ethanol, to support a biomass concentration of about 15 g dry weight.l-1. The dilution rate was set to be 0.05 hr-1 and the airflow rate was set to be 200 Other fermentation parameters are: a pH controlled at 5, a temperature controlled at 30˚C, an overpressure of 0.3 bar and stirrer speed of 600 rpm. The chemostat was considered to obtain its stable steady state condition 5 resident times after the end of its batch phase. Experiment Overall Design: Glucose pulse experiment - At the age of 7 dilution times, the steady state chemostat culture was perturbed by the addition of 20 ml of glucose solution (200 g/l) to the fermentor so that the residual glucose concentration was suddenly increased to about 1 g/l (5.56 mM). The glucose solution was rapidly injected by a pneumatic system (< 1 s). Samples were taken prior to the glucose pulse (steady state samples) and within 360 s transient after the perturbation. Experiment Overall Design: Verduyn,C., Postma,E., Scheffers,W.A., and van Dijken,J.P. (1992). Effect of benzoic acid on metabolic fluxes in yeasts: a continuous-culture study on the regulation of respiration and alcoholic fermentation. Yeast 8, 501-517.

INSTRUMENT(S): 418 [Affymetrix]

ORGANISM(S): Saccharomyces cerevisiae  

SUBMITTER: Jean-Marc Daran  

PROVIDER: E-GEOD-3821 | ArrayExpress | 2008-06-12



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When transcriptome meets metabolome: fast cellular responses of yeast to sudden relief of glucose limitation.

Kresnowati M T A P MT   van Winden W A WA   Almering M J H MJ   ten Pierick A A   Ras C C   Knijnenburg T A TA   Daran-Lapujade P P   Pronk J T JT   Heijnen J J JJ   Daran J M JM  

Molecular systems biology 20060912

Within the first 5 min after a sudden relief from glucose limitation, Saccharomyces cerevisiae exhibited fast changes of intracellular metabolite levels and a major transcriptional reprogramming. Integration of transcriptome and metabolome data revealed tight relationships between the changes at these two levels. Transcriptome as well as metabolite changes reflected a major investment in two processes: adaptation from fully respiratory to respiro-fermentative metabolism and preparation for growt  ...[more]

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