DNA relatedness among saturn-spored yeasts assigned to the generaWilliopsis andPichia
- 1 July 1991
- journal article
- Published by Springer Nature in Antonie van Leeuwenhoek
- Vol. 60 (1) , 13-19
- https://doi.org/10.1007/bf00580436
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.Keywords
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