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NCYC 524

Torulaspora pretoriensis

Pre 2011 Name Torulaspora pretoriensis

Equivalent Strain Designations ATCC 36245, CBS 2187, CCRC 21750, DBVPG 6306, IFO 10218, NRRL Y-111, NRRL Y-17251.

Depositor J.P. van der Walt

Deposit Date August 1958

Habitat Soil, South Africa.

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Torulaspora pretoriensis

Aerobic Utilisation and Growth

Glucose +
Galactose +
Sorbose Unknown
Sucrose +
Maltose +
Cellobiose -
Trehalose +
Lactose -
Melibiose -
Raffinose Unknown
Melizitose Unknown
Inulin Unknown
Soluble Starch Unknown
Xylose -
L Arabinose Unknown
D Arabinose Unknown
Ribose Unknown
Rhamnose Unknown
Ethanol Unknown
Glycerol Unknown
Erythritol Unknown
Ribitol Unknown
Galactitol Unknown
Mannitol +
Sorbitol +
A M D Glucoside Unknown
Salicin -
Lactic Acid Weak/Latent
Succinic Acid -
Citric Acid Unknown
Inositol Unknown
Gluconolactone Unknown
Glucosamine Unknown
Methanol Unknown
Xylitol Unknown

Strain Information

Type Strain
Information Ferments maltose (Oda Y , Tonomura K , 1993).
Depositor J.P. van der Walt
Deposit Name Saccharomyces pretoriensis
Month of deposit August
Deposit Year 1958
Habitat Soil, South Africa.
Equivalent Strain Designations ATCC 36245, CBS 2187, CCRC 21750, DBVPG 6306, IFO 10218, NRRL Y-111, NRRL Y-17251.
Reference Van der Walt & Tscheuschner, J.Gen.Microbiol. 14: 485-486, 1956.
James et al., Int.J.Syst.Bacteriol. 46: 189-194, 1996 (ITS1 & 2)
Oda Y , Tonomura K . Selection of a novel baking strain from the Torulaspora yeasts. Biosci. Biotechnol. Biochem. 57: 1320-1322, 1993.

Physical Characteristics

Optimum Temperature Unknown
Miniumum Temperature Unknown
Maximum Temperature Unknown


Shape Round
Min Broth Breadth (µm) 3
Max Broth Breadth (µm) 6
Min Broth Length (µm) 3
Max Broth Length (µm) 6
Min Agar Breadth (µm) 3
Max Agar Breadth (µm) 5
Min Agar Length (µm) 3
Max Agar Length (µm) 5
Arrangement Pairs
Colour on Agar White
Surface on Agar Shiny
Texture on Agar Smooth
Deposit in Broth Flocculent
Ring in Broth Complete
Ring Colour White
Pellicle in Broth Absent
Pellicle Appearance N/A
Pellicle Habit N/A

Cell Division

Budding Multipolar
Fission Absent

Filamentous Growth

Pseudomycelium Absent
Pseudomycelium Branch N/A
Pseudomycelium Form N/A
Blastospores N/A
Blastospore Shape N/A
Blastospore Location N/A
Blastospore Habit N/A
True Mycelium Absent
Clamp Connections Absent

Asexual Spores

Ballistospores Absent
Arthrospores Absent
Endospores Absent
Chlamydospores Absent

Sexual Spores

Ascospores Present
Ascospore Shape Round
Ascospore Wall Smooth
Ascospore No Per Ascus 4
Ascus Shape Unknown
Conjugation Present
Teliospores Absent
Teliospore Shape N/A


Assay Unknown
Salt Tolerant Unknown
Killer Unknown
Plasmid No

Semi-Anaerobic Fermentation

Glucose +
Galactose Weak/Latent
Sucrose +
Maltose +
Cellobiose Unknown
Trehalose Unknown
Lactose -
Melibiose -
Raffinose +
Melizitose Unknown
Inulin Unknown
Soluble Starch -
Xylose Unknown
A M D Glucoside Unknown

Aerobic Utilisation and Growth - Sole Sources of Nitrogen

NH4 2SO4 Unknown
KNO3 -
Ethylamine -
Cadaverine Unknown
Lysine Unknown


Vitamin Free Growth +
Cyclohex 100ppm +
Cyclohex 1000ppm Unknown
50% Glucose Growth Unknown
60% Glucose Growth -
Lipolytic -
Acid Production Unknown
37c Growth Unknown
40c Growth Unknown
Arbutin Hydrolysis -
Urease Activity Unknown
Starch Production -
Acid Tolerant Unknown