DESCRIPTIONS OF MEDICAL FUNGI

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Descriptions of Medical Fungi
Synonymy: Candida brumptii (Guerra) Langeron & Guerra.
Although most isolates of Candida catenulata originate from human sources, cases of
candidaemia are uncommon.
RG-1 organism.
Candida catenulata Diddens & Lodder
Culture: Colonies (SDA) white to cream-coloured smooth, soft and wrinkled, yeastlike.
Microscopy: Ovoid to cylindrical budding blastoconidia, 1.5-4.5 x 4-12 µm.
India Ink Preparation: Negative - no capsules present.
Dalmau Plate Culture: pseudohyphae consisting of chains of ovoid or cylindroid cells,
and sometimes small verticils of ovoid blastoconidia.
Physiological Tests: + Positive, - Negative, v Variable, w Weak, s Slow
Germ Tube - L-Sorbose - L-Arabinose - D-Glucitol v
Fermentation Sucrose - D-Arabinose - α-M-D-glucoside -
Glucose v Maltose v D-Ribose v D-Gluconate v
Galactose -,s Cellobiose - L-Rhamnose - DL-Lactate -
Sucrose - Trehalose v D-Glucosamine v myo-Inositol -
Maltose -,s Lactose - N-A-D-glucosamine + 2-K-D-gluconate v
Lactose - Melibiose - Glycerol + D-Glucuronate -
Trehalose - Raffinose - Erythritol - Nitrate -
Assimilation Melezitose - Ribitol v Urease -
Glucose + Soluble Starch v Galactitol - 0.1% Cycloheximide +,s
Galactose + D-Xylose v D-Mannitol + Growth at 37 O C v
Key Features: Separation from most physiologically similar species can be
accomplished based on positive growth responses on D-mannitol, D-glucitol and
resistance to 0.1% cycloheximide, combined with negative responses for sorbose and
erythritol utilisation or growth in vitamin-free medium.
Antifungal Susceptibility: C. catenulata (Australian National data); MIC µg/mL.
No 64
AmB 3 2 1
FLU 3 1 1 1
VORI 3 1 1 1
POSA 3 2 1
ITRA 3 1 1 1
ANID 3 1 2
MICA 3 1 2
CAS 3 1 2
5FC 3 3