Synchronized Meiosis and Recombination in Fission Yeast: Observations With pat1-114 Diploid Cells

Curr Genet. 1991 Jun;19(6):445-51. doi: 10.1007/BF00312735.

Abstract

The mutation pat1-114 has been used to synchronize meiosis in the fission yeast Schizosaccharomyces pombe. We have investigated several aspects of such synchronized meiotic cultures. In both pat1-114 and pat1+ diploids, meiotic landmark events are initiated at the same time after meiosis induction, but synchrony is much more pronounced in the pat1-114-driven meiosis. Commitment to recombination and to meiosis have been timed at 2 h after meiotic induction. Due to a seven-fold reduction of intragenic recombination frequency in the ade6 region of pat1-114 diploids, physical analysis of recombination has not been possible. We have distinguished three factors that influence intragenic recombination frequencies: temperature, azygotic versus zygotic meiosis, and the nature of the pat1 allele. Differences and similarities in the timing of meiotic landmarks in S. cerevisiae and S. pombe are discussed.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cell Cycle
  • Diploidy*
  • Meiosis* / genetics
  • Recombination, Genetic*
  • Schizosaccharomyces / genetics*
  • Schizosaccharomyces / growth & development