Electron microscopy of sporulation inSchwanniomyces alluvius |
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Authors: | N J W Kreger-van Rij |
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Institution: | (1) Laboratory of Medical Microbiology and Laboratory of Electron Microscopy, Department of Biology, State University, Groningen, The Netherlands |
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Abstract: | Sporulation inSchwanniomyces alluvius appeared to be preceded by fusion of a mother and a daughter cell. Meiosis probably occurred in the mother cell and one or
two spores were formed in the latter. A study of thin sections showed that the spore wall developed from a prospore wall.
The mature spore wall consisted of a broad light inner layer and a thinner dark outer layer including warts. An equatorial
ledge was present. During germination in the ascus, a new light inner layer was formed and the old layers of the spore wall
partly broke up. Ascospores in a strain ofS. persoonii had a different wall structure in that the dark layer had changed into light areas separated by dark material which formed
bulges at the surface. |
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