新种，一种从亚马逊雨林生物群落的吉丁甲肠道和腐烂木材中分离出的木糖发酵酵母。

sp. nov., a xylose-fermenting yeast isolated from gut of passalid beetles and rotting wood in the Amazonian rainforest biome.

作者信息

Costa Karen, Lopes Mariana R, Barros Katharina O, Souza Gisele F L, Santos Ana Raquel O, Souza Lauren M D, Rosa Luiz H, Abegg Maxwel A, Morais Paula B, Lachance Marc-André, Rosa Carlos A

机构信息

Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.

Institute of Exact Sciences and Technology (ICET), Federal University of Amazonas (UFAM), Itacoatiara, Brazil.

出版信息

Int J Syst Evol Microbiol. 2025 Aug;75(8). doi: 10.1099/ijsem.0.006871.

DOI:10.1099/ijsem.0.006871

PMID:40778933

Abstract

Two yeast isolates of a novel d-xylose-fermenting species were obtained from rotting wood and gut of a passalid beetle collected in the Brazilian Amazonian Rainforest biome. Sequence analysis of the internal transcribed spacer-5.8S region and the D1/D2 domains of the LSU rRNA gene showed that the isolates represent a novel species of the genus , phylogenetically related to . The yeast produced asci with a single malformed elongated ascospore with curved ends. The name sp. nov. is proposed to accommodate the novel species. The holotype of is CBS 14235 (MycoBank MB859328). Notably, demonstrated the ability to produce ethanol and xylitol from d-xylose, a biotechnologically valuable trait.

摘要

从巴西亚马逊雨林生物群落采集的腐烂木材和扁甲肠道中获得了两种新型发酵D-木糖的酵母分离株。对内部转录间隔区-5.8S区域和大亚基核糖体RNA基因的D1/D2结构域进行序列分析表明，这些分离株代表了一个属的新物种，在系统发育上与相关。该酵母产生的子囊中有一个畸形的细长子囊孢子，两端弯曲。提议用新种来容纳这个新物种。的模式菌株是CBS 14235（MycoBank MB859328）。值得注意的是，表现出从D-木糖生产乙醇和木糖醇的能力，这是一种具有生物技术价值的特性。