Mycobiology

The Korean Society of Mycology (한국균학회)
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Zygotorulaspora cornina sp. nov. and Zygotorulaspora smilacis sp. nov., Two Novel Ascomycetous Yeast Species Isolated from Plant Flowers and Fruits

  • Ahn, Chorong (Microorganism Resources Division, National Institute of Biological Resources) ;
  • Kim, Minkyeong (Microorganism Resources Division, National Institute of Biological Resources) ;
  • Kim, Changmu (Biological and Genetic Resources Assessment Division, National Institute of Biological Resources)
  • Received : 2021.03.15
  • Accepted : 2021.08.30
  • Published : 2021.10.31
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Abstract

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 = KACC93346PPP) and Zygotorulaspora smilacis sp. nov. (type strain NIBRFGC000500476 = KACC93347PPP). 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.

Keywords

Acknowledgement

This research was supported by the project on the survey and excavation of Korean indigenous species of the National Institute of Biological Resources (NIBR 202002116) under the Ministry of Environment, Republic of Korea.

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