Kockovaella ischaemi 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
Cuniculitremaceae
Kockovaella
Kockovaella ischaemi

description: Kockovaella ischaemi Q.M. Wang, F.Y. Bai & A.H. Li sp. nov. MycoBank MB828738. Fig. 7C, D.   
 Etymology: the specific epithet ischaemi refers to Ischaemum, the plant genus from which the type strain was isolated.   
 Culture characteristics: In YM broth, after 7 d at 17 °C, cells are ellipsoidal or ovoid, 2.0–3.8 × 2.3– 6.2 μm and single or pairs, budding is polar (Fig. 7C), blastoconidia are produced on short stalk-like conidiophores, a sediment is formed. 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 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 ellipsoidal or some what kidney-shaped, 2.0–3.7 × 4.2– 6.7 μm (Fig. 7D).   
 Physiological and biochemical characteristics: Glucose fermentation is absent. Glucose, galactose, sucrose, maltose, cellobiose, trehalose, lactose, melibiose, raffinose, melezitose, inulin, soluble starch, D-xylose, L-arabinose, D-arabinose (weak), Dribose, L-rhamnose, D-glucosamine, N-Acetyl-D-glucosamine, glycerol (variable), ribitol (variable), galactitol, D-mannitol, Methyl-α- D-glucoside (variable), salicin (weak), succinate (weak), citrate (variable) and myo-Inositol (variable) are assimilated as sole carbon sources. L-sorbose, methanol, ethanol, erythritol, D-glucitol, DL-lactate and hexadecane are not assimilated. Ammonium sulfate, sodium nitrite and cadaverine dihydrochloride are assimilated as sole nitrogen sources. Potassium nitrate, L-lysine and ethylamine hydrochloride are not assimilated. Maximum growth temperature is 30 °C. Growth in vitamin-free medium is positive. 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. The major ubiquinone is Q-10.   
 Physiologically, Koc. ischaemi differs from the closely related species Koc. haikouensis in its inability to assimilate ethylamine and its ability to assimilate inulin, D-arabinose, L-rhamnose and sodium nitrite (Table S1.1).   
 Typus: China, Jinghong, Yunnan province, obtained from a leaf of Ischaemum sp., Nov. 2006, Q.-M. Wang (holotype CGMCC 2.3565 T preserved in a metabolically inactive state, ex-type CBS 15500 = JH5.17)
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 81-83, DOI: 10.1016/j.simyco.2020.01.002, http://zenodo.org/record/10497182