4.2 Article

Zygotorulaspora cornina sp. nov. and Zygotorulaspora smilacis sp. nov., Two Novel Ascomycetous Yeast Species Isolated from Plant Flowers and Fruits

Journal

MYCOBIOLOGY
Volume 49, Issue 5, Pages 521-526

Publisher

TAYLOR & FRANCIS LTD
DOI: 10.1080/12298093.2021.1975919

Keywords

Zygotorulaspora cornina sp; nov; Zygotorulaspora smilacis sp; nov; ascomycete yeast; new yeast species

Funding

  1. project on the survey and excavation of Korean indigenous species of the National Institute of Biological Resources under the Ministry of Environment, Republic of Korea [NIBR 202002116]

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Two new species of Zygotorulaspora were discovered in Korea, showing distinct characteristics in their growth requirements and assimilation capabilities compared to other species in the genus. These species, along with others in the genus, have common phenotypic traits and are mainly associated with plants.
Three isolates belonging to the ascomycetous genus Zygotorulaspora were obtained from the fruits of Cornus officinalis and Smilax china, and flowers of Dendranthema zawadskii var. latilobum in Gongju-si, Korea. Phylogenetic Analyses of the LSU D1/D2 domain and ITS region sequences supported the recognition of two new species: Zygotorulaspora cornina sp. nov. (type strain NIBRFGC000500475 = KACC93346P(PP)) and Zygotorulaspora smilacis sp. nov. (type strain NIBRFGC000500476 = KACC93347P(PP)). The two novel species revealed no growth on D-Galactose, unlike the other six species in the genus Zygotorulaspora. They are distinguished from each other by their phylogenetic differences and phenotypic characteristics such as assimilation of xylitol, 5-keto-D-gluconate, and ethanol. All species in the genus Zygotorulaspora including the two novel species have phenotypic traits of genus Zygotorulaspora: asci are persistent, sucrose and raffinose are assimilated, and m-inositol is not required for growth, and they are mainly associated with plants.

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