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Wei Sheng Wu Xue Bao. 2000 Feb;40(1):9-13.

[Reclassification of Saccharomyces strains by comparative electrophoretic karyotyping].

[Article in Chinese]

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Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080.


The strains of Saccharomyces Meyen ex Reess preserved in China General Microbiological Culture Collection Center (CGMCC) were recharacterized and reidentified according to recent taxonomic improvement of the genus. The strains AS 2.100 (originally classified in S. cerevisiae), AS 2.1158(from former USSR and originally classified in S. exiguus) and AS 2.1555(from Australia and originally classified in S. uvarum) were found to be different from the standard descriptions of the species concerned in some physiological properties. Comparative CHEF electrophoretic karyotype analysis showed that the chromosomal DNA banding pattern of AS 2.100 was similar to that of the type strain of S. bayanus, while the electrophoretic karyotypes of AS 2.1158 and AS 2.1555 were similar to those of the type and authentic strains of S. cerevisiae. Therefore, AS 2.100 was reidentified as S. bayanus, and AS 2.1158 and AS 2.1555 were reclassified in the species S. cerevisiae.

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