Search on : Taxa descriptions


 Add this item to the list  834513 Original description
Description type:Original description 
Description:On glucose peptone yeast extract agar (GPYA) and 5 % malt extract agar (MEA), after 7 d at 25 °C, streak is white-cream, semi-glistening, with a smooth surface and have an entire margin. Cells are ovoid to elongate (2–6 × 5–8 μm) and occur singly or in pairs, divide by polar and multilateral budding. Rare pseudohyphae are produced on potato dextrose agar (PDA) and cornmeal agar (CMA). Ascospores and true hyphae have not been observed during 4 wk at 10 and 25 °C in culture (pure cultures and in mating test) grown on GPYA, MEA, PDA, CMA and yeast nitrogen base with 0.5% glucose (YNB) agar. Fermentation of glucose, galactose (delayed weak), trehalose and maltose (delayed) are positive, but negative for sucrose, lactose and raffinose. Glucose, sucrose, galactose, maltose, cellobiose, trehalose, melezitose, methyl alpha-D-glucoside, D-xylose, L-arabinose, D-glucosamine, ethanol, glycerol (weak), ribitol, D-mannitol, D-glucitol, salicin (weak), DL-lactic acid (weak), succinic acid (weak), citric acid, 2-keto-D-gluconate, arbutin are assimilated; no growth occurs on lactose, melibiose, raffinose, soluble starch, inulin, D-arabinose, D-ribose, L-sorbose, L-rhamnose, galactitol, erythritol, myo-inositol, 5-keto-D-gluconate, D-glucuronate and methanol. Nitrogen compounds: ammonium sulfate, potassium nitrate (weak), creatinine, creatine, L-lysine, D-glucosamine (weak) are assimilated. Growth on vitamin-free medium, on MEA with 10 % NaCl and on 50 % w/w glucose / yeast extract (0.5 %) agar is positive. Growth with 0.01 % and 0.1 % cycloheximide is weak. Starch-like compounds are not produced. Gelatin liquefaction and casein hydrolysis tests are positive. Diazonium blue B colour and urease reactions are negative. Maximum growth temperature is 42-44 °C.

Typus. RUSSIA, Moscow, Park Tsaritsyno, from Exomias pellucidus (Curculionidae), October 2018, A.M. Glushakova, Ins19-23 (holotype KBP Y-6457 preserved in a metabolically inactive state, ex-type cultures VKM Y-3050 = DSM 110120 = CBS 16171, SSU, ITS-D1/D2 domains of LSU nrDNA, TEF1 and RPB1 sequences GenBank MN908677, MN908679, LR745525 and LR745526.
Taxon name: