Mould Identification: A Virtual Self Assessment
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Unknown 46 = Fusarium oxysporum.
|A 40-year-old male presented with 65% burn injuries to his lower legs. He underwent several operative procedures for debridement, excision, and skin grafting. Despite bilateral below knee amputations he died 55 days after injury. The culture shown below was isolated.|
Colonies growing rapidly, 4.5 cm in 4 days, aerial mycelium white, becoming purple, with discrete orange sporodochia present in some strains; reverse hyaline to dark blue or dark purple.
Conidiophores are short, single, lateral monophialides in the aerial mycelium, later arranged in densely branched clusters. Macroconidia are fusiform, slightly curved, pointed at the tip, mostly three septate, basal cells pedicellate, 23-54 x 3-4.5 µm. Microconidia are abundant, never in chains, mostly non-septate, ellipsoidal to cylindrical, straight or often curved, 5-12 x 2.3 - 3.5 µm. Chlamydospores are terminal or intercalary, hyaline, smooth or rough-walled, 5-13 µm. In contrast to F. solani the phialides are short and mostly non-septate. RG-2 organism.
What is your identification?Fusarium oxysporum