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DNA RELATEDNESS AMONG SATURN-SPORED YEASTS ASSIGNED TO THE GENERA WILLIOPSIS AND PICHIA
被引:33
|作者:
KURTZMAN, CP
机构:
[1] Microbial Properties Research, National Center for Agricultural Utilization Research, Agricultural Research Service, U.S. Department of Agriculture, Peoria, 61604, Illinois
来源:
关键词:
DNA RELATEDNESS;
PICHIA;
SATURN-SPORED YEASTS;
SPECIES FORMATION;
WILLIOPSIS;
D O I:
10.1007/BF00580436
中图分类号:
Q93 [微生物学];
学科分类号:
071005 ;
100705 ;
摘要:
Saturn-spored species assigned to the genera Williopsis and Pichia were compared from extent of nuclear DNA complementarity. Of the Pichia spp., four were recognized as distinct taxa: P. dispora, P. saitoi, P. zaruensis and Pichia sp. nov. Among Williopsis 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. and Williopsis sp. nov. The new Pichia and Williopsis species are described elsewhere. Moderate (36-68%) DNA relatedness was detected between the former Pichia sargentensis and varieties of W. saturnus again demonstrating that nitrate assimilation is not a reliable criterion for separating yeast species.
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页码:13 / 19
页数:7
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