Departamento de Microbiologia, ICB, CP 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil.
Antonie Van Leeuwenhoek. 2011 Mar;99(3):635-42. doi: 10.1007/s10482-010-9536-z. Epub 2010 Dec 8.
Eight strains of a novel yeast species were isolated from rotting wood and wood-boring insects in Atlantic Rain Forest ecosystems in Brazil. Sequences of the D1/D2 domains of the large subunit of the rRNA gene showed that the yeast belongs to the Scheffersomyces clade and that it is related to Candida lignicola and Candida coipomoensis. The new species was isolated from rotting wood of three different localities and a wood-boring insect suggesting that these substrates are its ecological niche. This new yeast species is able to assimilate cellobiose and other compounds related to rotting wood. Strong fermentation of cellobiose in Durham tubes was observed for the strains of this new yeast. The new species produced an intracellular β-glucosidase responsible for cellobiose hydrolysis. The novel species, Candida queiroziae sp. nov., is proposed to accommodate these isolates. The type strain of C. queiroziae is UFMG-CLM 5.1(T) (=CBS 11853(T) = NRRL Y-48722(T)).
从巴西大西洋雨林生态系统的腐烂木材和蛀木昆虫中分离出了 8 株新型酵母菌株。核糖体 RNA 大亚基的 D1/D2 结构域序列表明，该酵母属于 Scheffersomyces 分支，与 Candida lignicola 和 Candida coipomoensis 有关。该新物种是从三个不同地点的腐烂木材和一种蛀木昆虫中分离出来的，这表明这些基质是其生态位。这种新型酵母能够同化纤维二糖和其他与腐烂木材有关的化合物。观察到该新型酵母的菌株在 Durham 管中对纤维二糖进行强烈发酵。该新种产生一种细胞内β-葡萄糖苷酶，负责纤维二糖水解。拟议容纳这些分离株的新型物种为 Candida queiroziae sp. nov.。C. queiroziae 的模式株为 UFMG-CLM 5.1(T)(=CBS 11853(T)=NRRL Y-48722(T))。
