The localization of mRNA forms a key facet of the post-transcriptional control 
of gene expression and recent evidence suggests that it may be considerably more 
widespread than previously anticipated. For example, defined mRNA-containing 
granules can be associated with translational repression or activation. 
Furthermore, mRNA P-bodies (processing bodies) harbour much of the mRNA decay 
machinery and stress granules are thought to play a role in mRNA storage. In the 
present review, we explore the process of mRNA localization in the yeast 
Saccharomyces cerevisiae, examining connections between organellar mRNA 
localization and the response to stress. We also review recent data suggesting 
that even where there is a global relocalization of mRNA, the specificity and 
kinetics of this process can be regulated.