Cellular stress responses oscillate in synchronization with the ultradian oscillation of energy metabolism in the yeast Saccharomyces cerevisiae
Abstract We investigated whether cellular responses to various stress conditions are regulated in synchronization with the ultradian rhythm of respiratory–fermentative metabolism which is coupled to the cell cycle rhythm in continuous cultures of the yeast Saccharomyces cerevisiae. The cellular resi...
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Published in | FEMS microbiology letters Vol. 189; no. 1; pp. 9 - 13 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford, UK
Blackwell Publishing Ltd
01.08.2000
Blackwell Oxford University Press |
Subjects | |
Online Access | Get full text |
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Summary: | Abstract
We investigated whether cellular responses to various stress conditions are regulated in synchronization with the ultradian rhythm of respiratory–fermentative metabolism which is coupled to the cell cycle rhythm in continuous cultures of the yeast Saccharomyces cerevisiae. The cellular resistance to heat oscillated with a peak at the late respiro–fermentative phase, which approximately corresponds to the unbudding period of the cell cycle. Cellular resistance to H2O2 and that to the superoxide-generating agent menadione oscillated in the same phase as that of heat resistance. The resistance to cadmium and that to 1-chloro-2,4-dinitrobenzene, an uncoupler of energy metabolism in mitochondria, both oscillated with a peak advanced by about 80° relative to that of heat resistance, approximately covering the respiro–fermentative phase. Thus, cellular resistance to various stresses in S. cerevisiae oscillated in synchronization with the metabolic oscillation in the continuous culture. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0378-1097 1574-6968 |
DOI: | 10.1111/j.1574-6968.2000.tb09198.x |