DESCRIPTIONS OF MEDICAL FUNGI

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Descriptions of Medical Fungi
Synonymy: Gibberella fujikuroi complex.
Fusarium fujikuroi complex
Fusarium fujikuroi complex consists of 50 phylogenetically distinct species including
13 of which have been reported to cause human infection; F. acutatum, F. ananatum,
F. andiyazi, F. fujikuroi, F. guttiforme, F. napiforme, F. nygamai, F. verticillioides, F.
proliferatum, F. sacchari, F. subglutinans, F. temperatum and F. thapsinum (Guarro,
2013, Al-Hatmi et al. 2015).
RG-1 organisms.
Morphological Descriptrion: Colonies growing rapidly, pink or vinaceous to violet;
aerial mycelium abundant. Sporodochia present or absent, when present they are tan
to orange. Conidiophores usually erect and branched. Macroconidia abundant, falcate
to rather straight, three to five-septate, with a distinct foot-cell, 27-73 x 3.4-5.2 μm.
Blastoconidia straight or slightly curved, two to three-septate, fusiform to lanceolate,
with a somewhat pointed, often slightly asymmetrical apical cell and a truncate basal
cell, 16-43 x 3.0-4.5 μm. Microconidia produced on polyphialides and aggregating
in heads, usually unicellular, ovoidal, ellipsoidal or allantoid, 4-20 x 1.5-4.5 μm.
Chlamydospores absent.
Antifungal Susceptibility: F. fujikuroi complex (Castanheir et al. 2012, Australian
National data); MIC µg/mL.
No. 64
AmB 39 3 19 15 2
VORI 39 2 12 14 8 3
POSA 39 4 9 7 3 16
ITRA 30 2 4 2 22
Fusarium incarnatum-equiseti complex
Fusarium incarnatum-equiseti complex consists of 40 phylogenetically distinct species.
They occasionally cause infections in humans and animals (O’Donnell et al. 2009b,
Guarro 2013).
RG-1 organisms.
Morphological Description: Colonies growing rapidly; aerial mycelium floccose,
at first whitish, later becoming avellaneous to buff-brown; reverse pale, becoming
peach-coloured. Conidiophores scattered in the aerial mycelium, loosely branched;
polyblastic conidiogenous cells abundant. Sporodochial macroconidia slightly
curved, with foot-cell, three to seven-septate, 20-46 x 3.0-5.5 µm. Conidia on aerial
conidiophores (blastoconidia) usually borne singly on scattered denticles, fusiform
to falcate, mostly three to five-septate, 7.5-35 x 2.5-4.0 µm. Microconidia sparse or
absent. Chlamydospores sparse, spherical, 10-12 µm diameter, becoming brown,
intercalary, single or in chains.