The transcriptional response to environmental changes is a major topic in b
oth basic and applied research. From a basic point of view. to understand t
his response includes unravelling how the stress signal is sensed and trans
duced to the nucleus, to identify which genes are induced under each stress
condition and, Finally, to establish the phenotypic consequences of this i
nduction in stress tolerance. The possibility of using genetic approaches h
as made the yeast Saccharomyces cerevisiae a compelling model to study stre
ss response at a molecular li vel. Moreover, this information call be used
to isolate and characterise stress-related proteins in higher eukaryotes an
d to design strategies to increase stress resistance in organisms of indust
rial interest. In this review the progress made in recent years is discusse
d. (C) 2000 Federation of European Microbiological Societies. Published by
Elsevier Science B.V. All rights reserved.