Growth requirements of some fungi causing maduromycosis
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Three strains ofMadurella mycetomi, two ofM. grisea, and two ofRhinocladiella mansonii have been studied for possible differences in growth requirements which might be used for distinguishing these species.
Under the experimental conditions, an incubation temperature of 37C suitedM. mycetomi about as well as 30C.R. mansonii grew less well at 37C than at 30C, andM. grisea did not grow at the higher temperature.
M. grisea andR. mansonii further differed fromM. mycetomi in that they required thiamine for growth.
The pH tolerance of all the strains was very wide.
Asparagine and potassium nitrate were readily utilized by all the strains, but ammonium salts were not. Urea was poorly used byM. mycetomi; the other species did not use it.
A possible relationship ofM. grisea andR. mansonii is discussed.
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