Factors affecting growth and urease production by Trichophyton spp. |
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Authors: | A. -L. E. Mahmoud A. A. El-Shanawany S. A. Omar |
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Affiliation: | (1) Botany Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt;(2) Botany and Microbiology Department, Faculty of Science, Al-Azhar University, 71524 Assiut, Egypt |
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Abstract: | Among Trichophyton spp. examined for urease production, T. rubrum was negative, whereas T. mentagrophytes appeared to be the most active species. Urease was not detected in cell-free culture fluids of the tested fungi. The endocellular urease of the test fungi was essentially constitutive. Moreover, addition of urea to the growth medium of these organisms markedly inhibited their mycelial biomass and ureolytic yield. Environmental factors showed variable effects on the test fungi and there was no correlation between mycelial growth and urease activity of these fungi. |
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Keywords: | dermatophytes Trichophyton urease |
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