Teunia globosa Q.M. Wang, F.Y. Bai & A.H. Li, 2020

Li, A. - H., Yuan, F. - X., Groenewald, M., Bensch, K., Yurkov, A. M., Li, K., Han, P. - J., Guo, L. - D., Aime, M. C., Sampaio, J. P., Jindamorakot, S., Turchetti, B., Inacio, J., Fungsin, B., Wang, Q. - M. & Bai, F. - Y., 2020, Diversity and phylogeny of basidiomycetous yeasts from plant leaves and soil: Proposal of two new orders, three new families, eight new genera and one hundred and seven new species, Studies In Mycology 96, pp. 17-140 : 87

Teunia globosa Q.M. Wang, F.Y. Bai & A.H. Li sp. nov. MycoBank MB828756. Fig. 7O .

Etymology: the specific epithet globosa refers to the globosal vegetative cells of the type strain.

Culture characteristics: In YM broth, after 7 d at 17 °C, cells are globosal, 4.5– 8.0 × 5.1–8.0 μm and single, budding is polar ( Fig. 7O ), a sediment is present. After 1 mo at 17 °C, a ring and sediment are present. On YM agar, after 1 mo at 17 °C, the streak culture is yellowish cream, butyrous, smooth and partly wrinkled, semi-glossy. The margin is entire. In Dalmau plate culture on corn meal agar, pseudohyphae are not formed. Sexual structures are not observed on YM, PDA, V8 and CM agar. Ballistoconidia are not produced.

Physiological and biochemical characteristics: Glucose fermentation is absent. Glucose, galactose, sucrose, maltose, cellobiose, trehalose, lactose (weak), melezitose, inulin (delayed and weak), soluble starch, D-xylose (delayed and weak), D-ribose (delayed and weak), L-rhamnose (delayed and weak), Dglucosamine (delayed and weak), N-Acetyl-D-glucosamine (weak), ethanol, D-mannitol, salicin, succinate (delayed and weak) and myo-inositol are assimilated as sole carbon sources. L-sorbose, melibiose, raffinose, L-arabinose, D-arabinose, methanol, glycerol, erythritol, ribitol, galactitol, D-glucitol, Methylα- D-glucoside, D-gluconate, DL-lactate, citrate and hexadecane are not assimilated. Ammonium sulfate, L-lysine, ethylamine hydrochloride (delayed and weak) and cadaverine dihydrochloride are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. Maximum growth temperature is 22 °C. Growth in vitamin-free medium is negative. Starch-like substances are not produced. Growth on 50 % (w/w) glucose-yeast extract agar is negative. Urease activity is positive. Diazonium Blue B reaction is positive.

Physiologically, Te. globosa differs from the closely related species Te. betulae in its inability to assimilate L-arabinose and its ability to assimilate ethanol ( Table S1.7 ).

Typus: China, Lulang county, Tibet, obtained from a leaf of an unidentified plant, Sep. 2015, Q.-M. Wang (holotype CGMCC 2.5648 T preserved in a metabolically inactive state, ex-type CBS 15566 = GPS23.2A6).

Figures

Fig. 7. Vegetative cells grown in YM broth for 5 d at 17 °C and ballistoconidia produced on corn meal agar after 7 d at 17 °C. (A, B) Koc. haikouensis CGMCC 2.3443T; (C, D) Koc. ischaemi CGMCC 2.3565T; (E) Koc. nitrophila CGMCC 2.3465T; (F) G. pseudoamylolytica CGMCC 2.5809T; (G) Tr. shuangheensis CGMCC 2.5615T; (H) V. melezitolyticum CGMCC 2.3472T; (I) V. pseudopenaeus CGMCC 2.3165T; (J) V. europaea CGMCC 2.3099T; (K) Ca. follicola CGMCC 2.3447T; (L) Ca. simaoensis CGMCC 2.3580T; (M) Kwoni. ovata CGMCC 2.3439T; (N) Te. helanensis CGMCC 2.4450T; (O) Te. globosa CGMCC 2.5648T; (P) Te. korlaensis CGMCC 2.3835T. Bars = 10 μm.