Detection of induced mitotic chromosome loss in Saccharomyces cerevisiae - an interlaboratory study

S. G. Whittaker, F. K. Zimmermann, B. Dicus, W. W. Piegorsch, S. Fogel, M. A. Resnick

Research output: Contribution to journalArticle

36 Scopus citations

Abstract

The diploid yeast strain D61.M. was used to study induction of mitotic chromosome loss. The test relies upon the uncovering and expression of multiple recessive markers reflecting the presumptive loss of the chromosome VII homologue carrying the corresponding wild-type alleles. The underlying 'loss event' is probably complex since the predicted centromere-linked lethal tetrad segregations for chromosome VII are not recovered. Instead, the homologue bearing the multiple recessive markers is patently homozygous. An interlaboratory study was performed in which 16 chemicals were tested under code in 2 laboratories. The results generated by the Berkeley and Darmstadt laboratories were in close agreement. Acetonitrile, ethyl acetate, 4-acetylpyridine, propionitrile and nocodazole were identified as potent inducers of mitotic chromosome loss. Acetone, dimethyl sulfoxide and 2-methoxyethyl acetate either elicited weak responses or yielded ambiguous results. Water, carbon tetrachloride, 4-fluoro-d,l-phenylalanine, amphotericin B, griseofulvin, cadmium chloride, ethyl methanesulfonate and methylmercury(II) chloride failed to induce chromosome loss. These data suggest that the system described herein represents a reliable assay for chemically induced chromosome loss in yeast.

Original languageEnglish (US)
Pages (from-to)31-78
Number of pages48
JournalMutation Research/Genetic Toxicology
Volume224
Issue number1
DOIs
StatePublished - Sep 1989
Externally publishedYes

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Keywords

  • Aneuploidy
  • Chromosome loss
  • Mitosis
  • Saccharomyces cerevisiae
  • Yeast

ASJC Scopus subject areas

  • Toxicology
  • Genetics

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