Monitoring the growth and stress responses of yeast cells by two-dimensional fluorescence spectroscopy: first results
Language English Country United States Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
12800501
DOI
10.1007/bf02930954
Knihovny.cz E-resources
- MeSH
- Alginates MeSH
- Spectrometry, Fluorescence methods MeSH
- Cells, Immobilized MeSH
- Culture Media MeSH
- Potassium Cyanide pharmacology MeSH
- Glucuronic Acid MeSH
- Hexuronic Acids MeSH
- Methanol pharmacology MeSH
- NADP metabolism MeSH
- Heat-Shock Response * MeSH
- Saccharomyces cerevisiae growth & development physiology MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Alginates MeSH
- Culture Media MeSH
- Potassium Cyanide MeSH
- Glucuronic Acid MeSH
- Hexuronic Acids MeSH
- Methanol MeSH
- NADP MeSH
S. cerevisiae growth and responses to different treatments were monitored by two-dimensional fluorescence spectroscopy, which simultaneously detects the fluorescence of a number of cells' own fluorophores. Growth curves of cultures of free cells were measured by means of tryptophan fluorescence in nonfluorescent culture medium and a flow-through system at a suitable excitation/emission beam geometry. Fast responses of the cells to anaerobic-aerobic transition or addition of glucose, methanol or cyanide, which could not be measured in this system because of the time delay inherent in transporting the cells from the culture flask to the cuvette, were monitored with cells immobilized in alginate. The major fluorescence changes caused by these treatments belonged to NAD(P)H which is a good indicator of the redox state of the cells.
Folia Microbiol (Praha). 2003;48(5):704 PubMed
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