Bacterial Foodborne Pathogens and Mycology Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, U.S. Department of Agriculture, Peoria, IL 61604, USA.
FEMS Yeast Res. 2013 Aug;13(5):423-32. doi: 10.1111/1567-1364.12044. Epub 2013 Apr 8.
Phylogenetic analysis of concatenated nuclear gene sequences for large and small subunit rRNAs, translation elongation factor 1-α, and the two large subunits of RNA polymerase II (RPB1, RPB2) demonstrated that species assigned to the yeast genus Ascoidea represent two separate and distantly related clades, that is, Ascoidea (A. asiatica, NRRL Y-17632, CBS 377.68; A. rubescens, NRRL Y-17699, CBS 116.35, type species; A. tarda sp. nov., NRRL Y-2393, CBS 12609, type strain), which is near the genus Saccharomycopsis, and Alloascoidea gen. nov. (Al. africana comb. nov., NRRL Y-6762-3, CBS 12606, Al. hylecoeti comb. nov., NRRL Y-17634, CBS 355.80, type species), which is near Nadsonia and related genera. From these analyses and from comparison of herbarium specimens, it appears that type strains of A. asiatica and Al. africana had been reversed. Sequence analysis further showed that Schizoblastosporion starkeyi-henricii is a sister species of Nadsonia fulvescens and it is proposed for transfer to Nadsonia.
基于大亚基和小亚基 rRNA、翻译延伸因子 1-α 以及 RNA 聚合酶 II 的两个大亚基（RPB1、RPB2）的串联核基因序列的系统发育分析表明，被归为 Ascoidea 属的物种代表两个独立且远缘的分支，即 Ascoidea（A. asiatica，NRRL Y-17632，CBS 377.68；A. rubescens，NRRL Y-17699，CBS 116.35，模式种；A. tarda sp. nov.，NRRL Y-2393，CBS 12609，模式株），它靠近 Saccharomycopsis 属，以及 Alloascoidea 属（新属）（Al. africana comb. nov.，NRRL Y-6762-3，CBS 12606；Al. hylecoeti comb. nov.，NRRL Y-17634，CBS 355.80，模式种），它靠近 Nadsonia 及其相关属。通过这些分析以及对标本的比较，似乎 A. asiatica 和 Al. africana 的模式株已经被颠倒了。序列分析进一步表明，Schizoblastosporion starkeyi-henricii 是 Nadsonia fulvescens 的姐妹种，建议将其转移到 Nadsonia 属。
