Isolation and characterization of a mutant of Schwanniomyces castellii with altered respiration

  title={Isolation and characterization of a mutant of Schwanniomyces castellii with altered respiration},
  author={C. Poinsot and Guy Moulin and Maurice L. Claisse and Pierre Galzy},
  journal={Antonie van Leeuwenhoek},
We have tried to isolate respiratory deficient mutants of the amylolytic yeast Schwanniomyces castellii CBS 2863 after mutagenesis with acriflavine. One of the mutants called DR 12 has been studied in more detail. Pasteur effect present in the wild-type is lost in the mutant, on the contrast an obvious Crabtree effect was observed: fermentation was almost as active in aerobiosis as in anaerobiosis. Moreover, the rate of anaerobic fermentation of the mutant was almost twice that of the wild type… CONTINUE READING
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