Zygote formation and recombination between like mating types in the yeast Saccharomycopsis lipolytica by protoplast fusion |
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Authors: | Ulf Stahl |
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Affiliation: | (1) Lehrstuhl für Allgemeine Botanik der Ruhr-Universität, Postfach 102148, D-4630 Bochum 1, Federal Republic of Germany |
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Abstract: | Summary Protoplasts from auxotrophic strains of the alkane yeast, Saccharomycopsis (Candida) lipolytica, will hybridize despite identity in mating type. Fusion products following regeneration and selection form stable prototrophic diploids, and recombinant progeny can be obtained either through the parasexual or the sexual cycle. These results confirm that mating type alleles of this yeast control only the initial steps in the mating sequence, cell recognition and agglutination, but not karyogamy and meiosis. |
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