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Genetics. Aug 1981; 98(4): 691–711.
PMCID: PMC1214469

Agents That Cause a High Frequency of Genetic Change from [psi+] to [psi-] in SACCHAROMYCES CEREVISIAE


The [psi] factor of yeast is cytoplasmically inherited. Singh, Helms and Sherman (1979) reported that high concentrations of KCl and of ethylene glycol induce the genetic change from [psi+] to [psi-]. In this study, the following agents have been shown to induce the same genetic change: guanidine hydrochloride at 1 mm, dimethyl sulfoxide at 2.5% v/v and ethanol or methanol at 10% v/v. It is likely that a number of other agents also cause the change, namely 2 m glycerol, m succinate, m glutamate and m MgCl2. Most of these agents induce the change at very high frequencies; with some, the frequency is 100%. Although the observed phenotypic change can also occur as a result of chromosomal gene mutation, no changes of this type were identified. Some of the agents also cause mutation from [rho+] to [rho-] and from killer to sensitive.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
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