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Fusarium dimerum
Penzig(1882)
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Macroscopic morphology may vary significantly on different media, and descriptions here are based upon growth on potato flakes agar at 25°C with on/off fluorescent light cycles of approximately 12 hours each. Colonies are salmon-colored, moist and yeast-like, producing very little aerial mycelium. This is the only slow-growing, clinically significant Fusarium species. [2202], [1630].
Hyphae are septate and hyaline. Macroconidiophores are short, simple (unbranched) or branched monophialides measuring approximately 10-18 x 4-5 µm. Macroconidia are small in comparison to other species (5-25 x 1.5-4.2 µm) and have 0-3 septa. The apical cell is hooked and the basal cell blunt or slightly notched. Microconidia are absent. Chlamydoconidia may be present but are usually rare. [2202],[1630].
Fusarium dimerum resembles an Acremonium species macroscopically. It is distinguished macroscopically from other fusaria by its slow growth, and microscopically by lacking microconidia and by the size and shape of the macroconidia. It has been reported as an agent of keratomycosis[2004],[2487], endocarditis occurring four years post-coronary artery bypass [367], and of an infection in a stem cell transplant recipient [244].
None available
PubMed
GenBank
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References
244. Bigley, V. H., R. F. Duarte, R. D. Gosling, C. C. Kibbler, S. Seaton, and M. Potter. 2004. Fusarium dimerum infection in a stem cell transplant recipient treated successfully with voriconazole. Bone Marrow Transplant. 34:815-7.
367. Camin, A. M., C. Michelet, T. Langanay, C. de Place, S. Chevrier, E. Gueho, and C. Guiguen. 1999. Endocarditis due to Fusarium dimerum four years after coronary artery bypass grafting. Clin Infect Dis. 28:150.
1630. Nelson, P. E., T. A. Toussoun, and W. F. O. Marasas. 1983. Fusarium species. An illustrated manual for identification. Pennsylvania State University Press, University Park, PA.
2004. Sallaber, S., G. Lori, and I. Galeppi. 1999. Keratomycosis by Fusarium dimerum. Enferm Infecc Microbiol Clin. 17:146-7.
2202. Sutton, D. A., A. W. Fothergill, and M. G. Rinaldi (ed.). 1998. Guide to Clinically Significant Fungi, 1st ed. Williams & Wilkins, Baltimore.
2487. Zapater, R. C., A. De Arrechea, and V. H. Guevara. 1972. Kertomycosis due to Fusarium dimerum. Sabouraudia. 10:274-5.
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