Derxomyces longicylindricus Q.M. Wang, F.Y. Bai & A.H. Li, 2020
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publication ID |
https://doi.org/ 10.1016/j.simyco.2020.01.002 |
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DOI |
https://doi.org/10.5281/zenodo.10474840 |
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persistent identifier |
https://treatment.plazi.org/id/03DF87BD-5548-FFA9-5315-3C5FFB52FD0A |
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treatment provided by |
Jonas |
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scientific name |
Derxomyces longicylindricus Q.M. Wang, F.Y. Bai & A.H. Li |
| status |
sp. nov. |
Derxomyces longicylindricus Q.M. Wang, F.Y. Bai & A.H. Li View in CoL sp. nov. MycoBank MB828781. Fig. 10G, H View Fig .
Etymology: the specific epithet longicylindricus refers to the long cylindrical vegetative cells of the type strain.
Culture characteristics: In YM broth, after 7 d at 17 °C, cells are long cylindrical, 2.9–5.0 × 7.1– 22 μm and single, budding is polar ( Fig. 10G View Fig ), a sediment is present. After 1 mo at 17 °C, a ring and a sediment are present. On YM agar, after 1 mo at 17 °C, the streak culture is yellowish-cream, butyrous, wrinkled and dull. 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 to napiform, 2.4– -4.2 × 3.6–6.0 μm ( Fig. 10H View Fig ).
Physiological and biochemical characteristics: Glucose fermentation is absent. Glucose, galactose, L-sorbose (weak), sucrose, maltose, cellobiose (weak), trehalose, melibiose, raffinose, melezitose, inulin, soluble starch (weak), D-xylose, L-arabinose, L-rhamnose, D-glucitol (delayed and weak), Methyl-α- D-glucoside and succinate (delayed and weak) are assimilated as sole carbon sources. Lactose, D-ribose, D-arabinose, D-glucosamine, N-Acetyl-D-glucosamine, methanol, ethanol, glycerol, erythritol, ribitol, galactitol, D-mannitol, salicin, DL-lactate, citrate, myo-inositol and hexadecane are not assimilated. Ammonium sulfate, L-lysine, ethylamine hydrochloride and cadaverine dihydrochloride are assimilated as sole nitrogen sources. Potassium nitrate and sodium nitrite are not assimilated. Maximum growth temperature is 28 °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, De. longicylindricus differs from the closely related species De. linzhiensis in its inability to assimilate Darabinose, galactitol, D-mannitol and cadaverine and its ability to assimilate L-rhamnose, L-lysine and ethylamine ( Table S1.11 View Table 1 ).
Typus: China, Beibeng county, Motuo , Tibet, obtained from a leaf of an unidentified plant, Sep. 2014, Q.-M. Wang (holotype CGMCC 2.5660 T preserved in a metabolically inactive state, ex-type CBS 13979 = XZ132E37A).
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