Guého E, Kurtzman C P, Peterson S W
Institut Pasteur, Unité de Mycologie, Paris, France.
Int J Syst Bacteriol. 1990 Jan;40(1):60-5. doi: 10.1099/00207713-40-1-60.
Sequence comparisons of selected regions from small (18S) and large (25S) subunit rRNAs were used to examine species relationships in the anamorphic yeast genera Sterigmatomyces, Fellomyces, Tsuchiyaea, and Kurtzmanomyces. On the basis of sequence similarity, the genus Sterigmatomyces is comprised of Sterigmatomyces halophilus and Sterigmatomyces elviae, while the genus Fellomyces contains three recognized species, Fellomyces fuzhouensis, Fellomyces penicillatus, and Fellomyces polyborus. Tsuchiyaea wingfieldii and Kurtzmanomyces nectairii are well separated from the other species which we examined. Comparison with selected teleomorphs indicated that the genus Fellomyces is closely related to the genus Sterigmatosporidium, whereas the genus Sterigmatomyces exhibited somewhat closer relatedness with the genus Leucosporidium. Impacting on our estimates of relatedness was the finding that nucleotide substitution in the rRNA regions which we examined seems relatively constant only among closely related species.
利用小亚基（18S）和大亚基（25S）核糖体RNA选定区域的序列比较，来研究无性型酵母属嗜盐柄孢酵母属、费氏酵母属、土屋酵母属和库兹曼酵母属中的物种关系。基于序列相似性，柄孢酵母属由嗜盐柄孢酵母和埃尔维柄孢酵母组成，而费氏酵母属包含三个公认的物种，即福州费氏酵母、青霉费氏酵母和多孢费氏酵母。温氏土屋酵母和奈氏库兹曼酵母与我们研究的其他物种有明显区别。与选定的有性型的比较表明，费氏酵母属与掷孢酵母属密切相关，而柄孢酵母属与白冬孢酵母属的亲缘关系似乎更近一些。影响我们对亲缘关系估计的是，我们研究的核糖体RNA区域中的核苷酸替换似乎仅在亲缘关系密切的物种中相对恒定这一发现。
