Interfertility as basis for the delimitation of Kluyveromyces marxianus |
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Authors: | Elżbieta Johannsen Johannes P van der Walt |
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Institution: | (1) Microbiology Research Group, Council for Scientific and Industrial Research, P.O. Box 395, 0001 Pretoria, South Africa |
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Abstract: | Hybridization studies between strains of Kluyveromyces marxianus and the remaining species of the genus involving the use of auxotrophic mutants, are reported. K. marxianus was found to be interfertile with K. bulgaricus, K. cicerisporus, K. dobzhanskii, K. drosophilarum, K. fragilis, K. lactis, K. phaseolosporus, K. vanudenii and K. wikenii. Accepting interfertility as criterion for conspecificity, these nine syngamous taxa are relegated to the status of biotypes or physiologic races of a single species K. marxianus. |
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Keywords: | Kluyveromyces marxianus Hybridization Interfertility Conspecificity Taxonomy |
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