Vishniacozyma pseudopenaeus Q. M. Wang, F. Y. Bai & A. H. Li 2020, sp. nov.
Creators: name: Li, A. - H.
name: Yuan, F. - X.
name: Groenewald, M.
name: Bensch, K.
name: Yurkov, A. M.
name: Li, K.
name: Han, P. - J.
name: Guo, L. - D.
name: Aime, M. C.
name: Sampaio, J. P.
name: Jindamorakot, S.
name: Turchetti, B.
name: Inacio, J.
name: Fungsin, B.
name: Wang, Q. - M.
name: Bai, F. - Y.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Tremellomycetes
Tremellales
Bulleribasidiaceae
Vishniacozyma
Vishniacozyma pseudopenaeus

description: Vishniacozyma pseudopenaeus Q.M. Wang, F.Y. Bai & A.H. Li sp. nov. MycoBank MB828743. Fig. 7I.   
 Etymology: the specific epithet pseudopenaeus refers to the similar colony morphology and physiological characteristics to that of Vishniacozyma penaeus.   
 Culture characteristics: In YM broth, after 7 d at 17 °C, cells are subsphaeroidal and ellipsoidal, 2.6 –3.5 × 2.8– 5.0 μm and single, budding is polar (Fig. 7I), a sediment is formed. After 1 mo at 17 °C, a pellicle and a sediment are present. On YM agar, after 1 mo at 17 °C, the streak culture is pale grayish-cream, mucoid, smooth and glistening. 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, L-sorbose, sucrose, maltose, cellobiose, trehalose, lactose, melibiose, raffinose, melezitose, soluble starch (varialbe), D-xylose, L-arabinose, Darabinose, D-ribose, L-rhamnose, D-glucosamine, D-gluconate, ethanol (varialbe), glycerol, erythritol (varialbe), ribitol, galactitol, D-mannitol, D-glucitol, Methyl-α- D-glucoside, salicin,, DL-lactate (varialbe), succinate (weak), citrate and myo-inositol are assimilated as sole carbon sources. Inulin, methanol and hexadecane are not assimilated. Ammonium sulfate, potassium nitrate (variable), L-lysine, ethylamine hydrochloride (weak) and cadaverine dihydrochloride (variable) are assimilated as sole nitrogen sources. Sodium nitrite are not assimilated as sole nitrogen sources. Maximum growth temperature is 32 °C. Growth in vitamin-free medium is positive. Starch-like substances are produced or not. Growth on 50 % (w/w) glucose-yeast extract agar is negative. Urease activity is positive. Diazonium Blue B reaction is positive.   
 Physiologically, V. pseudopenaeus differs from the closely related species V. penaeus in its ability to grow in vitamin-free medium, however, the latter does not grow in vitamin-free medium (Table S1.4).   
 Typus: Germany, obtained from a leaf of an unidentified plant, Sep. 2005 (holotype CGMCC 2.3165 T preserved in a metabolically inactive state, ex-type CBS 15472 = G7.20).
description: Published as part of 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, pp. 17-140 in Studies In Mycology 96 on pages 84-85, DOI: 10.1016/j.simyco.2020.01.002, http://zenodo.org/record/10497182