Current Genetics

, Volume 2, Issue 1, pp 87–93 | Cite as

Protoplast fusion in a petite-negative yeast, Kluyveromyces lactis

  • Andrew J. Morgan
  • Aurora Brunner
  • Peter A. Whittaker
Article

Summary

The technique of protoplast fusion has been applied to the problem of unstable diploidy in the yeast Kluyveromyces lactis. By protoplast fusion between heterothallic strains of like mating-type, sporulation-deficient hybrids can be obtained. Biochemical, cytological, and genetical characterisation of these hybrids suggests that the majority of fusion products are diploid. Sporulating hybrids can be constructed by protoplast fusion between homothallic strains. Tetrad analysis of these hybrids demonstrates conclusively the diploid nature of fusion products.

Key words

Protoplast fusion Kluyveromyces Hybrid characterization Stable Diploids 

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Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • Andrew J. Morgan
    • 1
  • Aurora Brunner
    • 2
  • Peter A. Whittaker
    • 3
  1. 1.The School of Biological SciencesUniversity of SussexFalmerEngland
  2. 2.Depto. de Microbiologia, Centro de Investigaciones en Fisiologia CelularUniversidad Nacional Autonoma de MexicoMexico 20, D. F.
  3. 3.Department of BiologySt. Patrick's CollegeMaynooth, Co. KildareIreland

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