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DNA relatedness among saturn-spored yeasts assigned to the generaWilliopsis andPichia

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Abstract

Saturn-spored species assigned to the generaWilliopsis andPichia were compared from extent of nuclear DNA complementarity. Of thePichia spp., four were recognized as distinct taxa:P. dispora, P. saitoi, P. zaruensis andPichia sp. nov. AmongWilliopsis spp., the following were accepted:W. californica, W. mucosa comb. nov.,W. pratensis, W. saturnus var.saturnus, W. saturnus var.mrakii comb. nov.,W. saturnus var.sargentensis comb. nov.,W. saturnus var.subsufficiens comb. nov. andWilliopsis sp. nov. The newPichia andWilliopsis species are described elsewhere. Moderate (36–68%) DNA relatedness was detected between the formerPichia sargentensis and varieties ofW. saturnus again demonstrating that nitrate assimilation is not a reliable criterion for separating yeast species.

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Authors and Affiliations

  1. Microbial Properties Research, National Center for Agricultural Utilization Research, Agricultural Research Service, U.S. Department of Agriculture, 61604, Peoria, Illinois, USA

    Cletus P. Kurtzman

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  1. Cletus P. Kurtzman
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Kurtzman, C.P. DNA relatedness among saturn-spored yeasts assigned to the generaWilliopsis andPichia . Antonie van Leeuwenhoek 60, 13–19 (1991). https://doi.org/10.1007/BF00580436

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  • DOI: https://doi.org/10.1007/BF00580436

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