Molecular characterization,relatedness and antifungal susceptibility of the basidiomycetous hormographiella species and Coprinus cinereus from clinical and environmental sources |
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Authors: | J Gené J M Guillamon J Guarro I Pujol K Ulfig |
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Institution: | (1) Unitat de Microbiologia, Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, 43201 Reus, Spain;(2) Department de Bioquímica i Biotecnologia, Escola d'Enologia, Universitat Rovira i Virgili, 43005 Tarragona, Spain;(3) Department de Microbiologia, Hospital Universitari de Sant Joan, Universitat Rovira i Virgili, 43201 Reus, Spain;(4) Institute for Ecology of Industrial Areas, 48-832 Katowice, Poland |
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Abstract: | Hormographiella-like strains, isolated from different natural substrates and producing sclerotia and occasionally basidiomata of Coprinus cinereus, were compared morphologically and using molecular techniques with clinical strains of Hormographiella aspergillata and H. verticillata. Analysis of restriction fragment length polymorphisms of ribosomal and mitochondrial-like DNA confirmed interspecific differences between H. aspergillata and H. verticillata, supporting the morphological data, and helped demonstrate that H. aspergillata is the anamorph of C. cinereus. The latter was confirmed also by crossing tests. The analysis of the mtDNA restriction profiles revealed intraspecific variability in C. cinereus, which allowed differentiation of clinical and environmental strains. Due to the implication of C. cinereus and Hormographiella in human opportunistic infections, the antifungal susceptibility test is included. Results show that all strains were susceptible to miconazole, itraconazole and ketoconazole but not to flucytosine and fluconazol. Susceptibility against amphotericin B was variable; while H. verticillata was susceptible, four out of seven C. cinereus strains tested were resistant. |
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Keywords: | Coprinus cinereus Hormographiella ribosomal DNA mitochondrial DNA antifungal susceptibility |
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