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Taxonomy ofKluyveromyces: evaluation of DNA base composition

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Abstract

The DNA base composition of 19 strains ofKluyveromyces was calculated from the thermal denaturation temperature (Tm) of their DNA. The % GC ranged from 33 to 45, with a bimodal repartition. It may be inferred that the intrageneric variation is too weak to discriminate two genera. However, two groups can be distinguished on the base of % GC and two other criteria of classification.

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Authors and Affiliations

  1. Laboratory of Microbiology and Mycology, University Claude Bernard, 69, Villeurbanne, France

    Simone Poncet & J. -B. Fiol

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  1. Simone Poncet
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  2. J. -B. Fiol
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associated with the Centre National de la Recherche Scientifique.

The authors are indebted to Professor Dr. J. De Ley for his advice on the thermal-denaturation technique and to Mrs. Billon-Grand for her skilful technical assistance.

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Poncet, S., Fiol, J.B. Taxonomy ofKluyveromyces: evaluation of DNA base composition. Antonie van Leeuwenhoek 38, 145–152 (1972). https://doi.org/10.1007/BF02328086

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