Lachance M A, Bowles J M, Starmer W T, Barker J S
Department of Plant Sciences, University of Western Ontario, London, Canada.
Can J Microbiol. 1999 Feb;45(2):172-7. doi: 10.1139/w98-225.
Two new yeast species were isolated from flowers of Hibiscus species in Eastern and Northern Australia. Kodamaea kakaduensis is heterothallic, haploid, and similar to other Kodamaea species and to Candida restingae. Buds are often produced on short protuberances, and a true mycelium is formed. The new species differs from others by the assimilation of trehalose, melezitose, and xylitol, and is reproductively isolated. The cells of Candida tolerans are small and a pseudomycelium is formed. The carbon and nitrogen assimilation pattern is reminiscent of that of Zygosaccharomyces rouxii but the two are not closely related. Sequences of the D1/D2 domain of large subunit ribosomal DNA confirm the membership of K. kakaduensis in the genus Kodamaea and indicate that C. tolerans belongs to the Clavispora-Metschnikowia clade, with a moderate relatedness to Candida mogii. The type strains are: K. kakaduensis, UWO(PS)98-119.2 (h+, holotype, CBS 8611) and UWO(PS)98-117.1 (h-, isotype, CBS 8612); and C. tolerans, UWO(PS)98-115.5 (CBS 8613).
从澳大利亚东部和北部的木槿属植物花朵中分离出了两个新的酵母物种。卡卡杜柯达酵母是异宗配合、单倍体的，与其他柯达酵母属物种以及雷斯塔假丝酵母相似。芽通常在短突起上产生，并形成真正的菌丝体。该新物种通过对海藻糖、松三糖和木糖醇的同化作用与其他物种相区别，并且在生殖上是隔离的。耐假丝酵母的细胞较小，形成假菌丝体。其碳氮同化模式让人联想到鲁氏接合酵母，但二者关系并不密切。大亚基核糖体DNA的D1/D2结构域序列证实了卡卡杜柯达酵母属于柯达酵母属，并表明耐假丝酵母属于克勒克酵母-梅奇酵母进化枝，与莫吉假丝酵母有一定相关性。模式菌株分别为：卡卡杜柯达酵母，UWO(PS)98 - 119.2（h +，全模式，CBS 8611）和UWO(PS)98 - 117.1（h -，等模式，CBS 8612）；以及耐假丝酵母，UWO(PS)98 - 115.5（CBS 8613）。
