Rhodosporidiobolus oreadorum YP

Hwang, Heehyun, Bai, Jaewoo & Sathiyaraj, Srinivasan, 2025, Characterization of two unrecorded yeast species in the families Cystobasidiaceae and Sporidiobolaceae isolated from Craspedonotus tibialis and mountain soil in Korea, Journal of Species Research 14 (1), pp. 74-80 : 79

Description of Rhodosporidiobolus oreadorum YP 99

Cells are oval and exhibit polar budding ( Fig. 1 ). After 3 days of incubation on YPD agar at 25°C, colonies range in color from cream to light orange, appearing round and raised. In the API 20C AUX test, strain YP99 tests weakly positive for adonitol and D-sorbitol; but negative for glucose, glycerol, calcium-2-keto-D-gluconate, L-arabinose, D-xylose, xylitol, D-galactose, inositol, methyl- α -D-glu- copyranoside, N -acetyl-D-glucosamine, D-cellobiose, D-lactose (bovine origin), D-maltose, D-saccharose (sucrose), D-trehalose, D-melezitose, and D-raffinose.

Strain YP 99 ( KACC 48748 ) was isolated from soil samples collected in Uijeongbu-si , Gyeonggi-do, Republic of Korea .

Figures

Fig. 1. Morphology of cells from the unreported strains CB9-2 and YP99 incubated at 25℃. All strains were grown on YPD agar for 3 days. The colonies of Cystobasidium slooffiae CB9-2 (A) and Rhodosporidiobolus oreadorum YP99 (B). The budding cells of Cystobasidium slooffiae CB9-2 (C) and Rhodosporidiobolus oreadorum YP99 (D). Bars, 10 μm.