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Ultrastructure of the ascospores of some species of the Torulaspora group

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Abstract

Development and germination of the ascospores in species of the Torulaspora group of yeasts have been described. Most species had warty spores which, in sections, showed a dark outer layer consisting of the outer unit membrane of the prospore wall and a layer underneath formed at an early stage of development of the spores. In mature spores the light inner layer of the wall was delimited at the outside by a thin dark layer. The warts often contained dark material. The ascospores of two Pichia and three Debaryomyces species were studied for comparison; they differed in sections from the Torulaspora spores. The taxonomic implications of the ultrastructural observations have been discussed.

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Authors and Affiliations

  1. Laboratory of Medical Microbiology Department of Biology, State University, Groningen, The Netherlands

    N. J. W. Kreger-van Rij & M. Veenhuis

  2. Laboratory of Electron Microscopy, Department of Biology, State University, Groningen, The Netherlands

    N. J. W. Kreger-van Rij & M. Veenhuis

Authors
  1. N. J. W. Kreger-van Rij
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  2. M. Veenhuis
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Kreger-van Rij, N.J.W., Veenhuis, M. Ultrastructure of the ascospores of some species of the Torulaspora group. Antonie van Leeuwenhoek 42, 445–455 (1976). https://doi.org/10.1007/BF00410175

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  • DOI: https://doi.org/10.1007/BF00410175

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