School of Medicine, Graduate School of Medicine, Teikyo University, Tokyo, Japan.
Teikyo University Institute of Medical Mycology, Tokyo, Japan.
J Vet Med Sci. 2023 Mar 1;85(3):271-278. doi: 10.1292/jvms.22-0374. Epub 2023 Jan 18.
Koalas are iconic mammals indigenous to Australia. These rare animals and their habitats are occasionally associated with pathogenic fungi, including species of Cryptococcus, and consequently, monitoring the mycobiota of areas inhabited by koalas is of considerable importance. In this report, we describe a novel basidiomycetous yeast isolated from a site in Kanazawa Zoo, Japan, associated with captive koalas. Swab samples were collected from koala breeding environments, from which we isolated a novel unencapsulated yeast characterized by ovoid to ellipsoidal cells (3.2-4.9 × 3.5-5 μm). These cells were observed to undergo polar budding and grow as parent bud pairs, with an optimal growth temperature of 28°C. Colonies grown on yeast extract peptone dextrose agar at 28°C have a characteristic coral pink color. On the basis of physiological, morphological, and molecular characters, the new species was placed in the genus Begerowomyces, and the name Begerowomyces aurantius JCM33898(LSEM1333=CBS16241) is proposed.
考拉是澳大利亚特有的标志性哺乳动物。这些珍稀动物及其栖息地偶尔会与致病性真菌有关，包括隐球菌属的一些物种，因此，监测考拉栖息地的真菌群是非常重要的。在本报告中，我们描述了一种从日本金泽动物园的一个地点分离出的新型担子菌酵母，该酵母与圈养的考拉有关。从考拉繁殖环境中采集拭子样本，从中分离出一种新型非荚膜酵母，其特征为卵形到椭圆形细胞（3.2-4.9×3.5-5μm）。观察到这些细胞进行极向出芽，并以亲芽对的形式生长，最佳生长温度为 28°C。在 28°C 下于酵母提取物-蛋白胨-葡萄糖琼脂上生长的菌落具有特征性的珊瑚粉红色。基于生理、形态和分子特征，新物种被归入 Begerowomyces 属，并提出了 Begerowomyces aurantius JCM33898（LSEM1333=CBS16241）的名称。
