Characterization of a novel yeast species Metschnikowia persimmonesis KCTC 12991BP (KIOM G15050 type strain) isolated from a medicinal plant, Korean persimmon calyx (Diospyros kaki Thumb)

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Abstract

The yeast strain Metschnikowia persimmonesis Kang and Choi et al., sp. nov. [type strain KIOM_G15050 = Korean Collection for Type Cultures (KCTC) 12991BP] was isolated from the stalk of native persimmon cultivars (Diospyros kaki Thumb) obtained from different regions of South Korea and was characterized phenotypically, genetically, and physiologically. The isolate grew between 4 and 40 °C (optimum temperature: 24–28 °C), pH 3–8 (pH optimum = 6.0), and in 0–4% NaCl solution (with optimal growth in absence of NaCl). It also exhibited strong antibiotic and antimicrobial activities. Morphologically, cells were characterized by the presence of long, needle-shaped ascospores. Based on 18S ribosomal DNA gene sequence analysis, the new species was found to belong to the genus Metschnikowia as a sister clade of Metschnikowia fructicola. We therefore conclude that this yeast isolate from D. kaki is a new member of the genus Metschnikowia and propose the name M. persimmonesis sp. nov. This strain has been deposited in the KCTC for future reference. This discovery provides a basis for future research on M. persimmonesis sp. nov., including its possible contribution to the medicinal properties of the host persimmon plant.

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Kang, Y. M., Choi, J. E., Komakech, R., Park, J. H., Kim, D. W., Cho, K. M., … Lee, J. S. (2017). Characterization of a novel yeast species Metschnikowia persimmonesis KCTC 12991BP (KIOM G15050 type strain) isolated from a medicinal plant, Korean persimmon calyx (Diospyros kaki Thumb). AMB Express, 7(1). https://doi.org/10.1186/s13568-017-0503-1

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