Glucose triggers different global responses in yeast, depending on the strength of the signal, and transiently stabilizes ribosomal protein mRNAs

Zhikang Yin, Séan Wilson, Nicole C. Hauser, Helene Tournu, Jörg D. Hoheisel, Alistair J.P. Brown

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

Glucose exerts profound effects upon yeast physiology. In general, the effects of high glucose concentrations (<1%) upon Saccharomyces cerevisiae have been studied. In this paper, we have characterized the global responses of yeast cells to very low (0.01%), low (0.1%) and high glucose signals (1.0%) by transcript profiling. We show that yeast is more sensitive to very low glucose signals than was previously thought, and that yeast displays different responses to these different glucose signals. Genes involved in central metabolic pathways respond rapidly to very low glucose signals, whereas genes involved in the biogenesis of cytoplasmic ribosomes generally respond only to glucose concentrations of >0.1%. We also show that cytoplasmic ribosomal protein mRNAs are transiently stabilized by glucose, indicating that both transcriptional and post-transcriptional mechanisms combine to accelerate the accumulation of ribosomal protein mRNAs. Presumably, this facilitates rapid ribosome biogenesis after exposure to glucose. However, our data indicate that yeast activates ribosome biogenesis only when sufficient glucose is available to make this metabolic investment worthwhile. In contrast, the regulation of metabolic functions in response to very low glucose signals presumably ensures that yeast can exploit even minute amounts of this preferred nutrient.

Original languageEnglish (US)
Pages (from-to)713-724
Number of pages12
JournalMolecular Microbiology
Volume48
Issue number3
DOIs
StatePublished - May 1 2003

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Ribosomal Proteins
Yeasts
Glucose
Messenger RNA
Ribosomes
Food

All Science Journal Classification (ASJC) codes

  • Microbiology
  • Molecular Biology

Cite this

Glucose triggers different global responses in yeast, depending on the strength of the signal, and transiently stabilizes ribosomal protein mRNAs. / Yin, Zhikang; Wilson, Séan; Hauser, Nicole C.; Tournu, Helene; Hoheisel, Jörg D.; Brown, Alistair J.P.

In: Molecular Microbiology, Vol. 48, No. 3, 01.05.2003, p. 713-724.

Research output: Contribution to journalArticle

Yin, Zhikang ; Wilson, Séan ; Hauser, Nicole C. ; Tournu, Helene ; Hoheisel, Jörg D. ; Brown, Alistair J.P. / Glucose triggers different global responses in yeast, depending on the strength of the signal, and transiently stabilizes ribosomal protein mRNAs. In: Molecular Microbiology. 2003 ; Vol. 48, No. 3. pp. 713-724.
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