Rhodotorula silvicola sp. nov., a new yeast species from plant-associated substrates and mushroom.

IF 2 3区生物学 Q4 MICROBIOLOGY

International journal of systematic and evolutionary microbiology Pub Date : 2025-07-01 DOI:10.1099/ijsem.0.006836

Yu-Hua Wei, Liang-Chen Guo, Hai-Yan Zhu, Zhang Wen, Shang-Jie Yao, Xiao-Long You, En-Di Fan, Kyria Boundy-Mills, Irnayuli Sitepu, Feng-Yan Bai, Di-Qiang Wang, Pei-Jie Han

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Abstract

An orange-coloured yeast strain was recently isolated from rotted leaves in Zunyi City, Guizhou Province, PR China. Phylogenetic analysis revealed that this strain shares identical or similar sequences with no more than two to three nucleotide substitutions in both the 26S rDNA D1/D2 domains and the internal transcribed spacer (ITS) region with three other strains isolated from decayed wood in Indonesia, mushroom in Thailand and a plant of the genus Opuntia in the Bahamas. Therefore, these strains are conspecific. And they are most closely related to Rhodotorula paludigena but exhibit sequence divergences of 2.1-2.6% in the 26S rDNA D1/D2 domains and 2.9-3.2% in the ITS region. Physiologically, strain CGMCC 2.7770 differs from R. paludigena in its ability to assimilate maltose, l-arabinose and citric acid. Both the phylogenetic analysis and phenotypic characteristics indicate that those four strains represent a novel species in the genus Rhodotorula, for which the name Rhodotorula silvicola sp. nov. is proposed (holotype CGMCC 2.7770^T).

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silvicola Rhodotorula sp. nov.，一种来自植物相关基质和蘑菇的酵母新种。

最近从中国贵州省遵义市的腐叶中分离出一株橙色酵母菌。系统发育分析表明，该菌株在26S rDNA D1/D2结构域和内部转录间隔区（ITS）与印度尼西亚的腐木、泰国的蘑菇和巴哈马的一种Opuntia属植物中分离的另外三株菌株具有相同或相似的序列，不超过2 ~ 3个核苷酸取代。因此，这些菌株是同源的。它们与paludigena红酵母的亲缘关系最为密切，但在26S rDNA D1/D2区域的序列差异为2.1 ~ 2.6%，在ITS区域的序列差异为2.9 ~ 3.2%。在生理上，菌株CGMCC 2.7770在麦芽糖、l-阿拉伯糖和柠檬酸的同化能力上与帕鲁迪亚纳菌不同。系统发育分析和表型分析表明，这4株菌株为红torula属的一个新种，命名为Rhodotorula silvicola sp. nov （holotype CGMCC 2.7770T）。

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来源期刊

International journal of systematic and evolutionary microbiology 生物-微生物学

CiteScore

5.20

自引率

21.40%

发文量

426

审稿时长

1 months

期刊介绍： Published by the Microbiology Society and owned by the International Committee on Systematics of Prokaryotes (ICSP), a committee of the Bacteriology and Applied Microbiology Division of the International Union of Microbiological Societies, International Journal of Systematic and Evolutionary Microbiology is the leading forum for the publication of novel microbial taxa and the ICSP’s official journal of record for prokaryotic names. The journal welcomes high-quality research on all aspects of microbial evolution, phylogenetics and systematics, encouraging submissions on all prokaryotes, yeasts, microfungi, protozoa and microalgae across the full breadth of systematics including: Identification, characterisation and culture preservation Microbial evolution and biodiversity Molecular environmental work with strong taxonomic or evolutionary content Nomenclature Taxonomy and phylogenetics.