This paper reports on the factors required for pigment production and on the mating type of 6 clinical isolates of Trichophyton which produce a diffusible brownish pigment. 3 isolates were identified as T. mentagrophytes and 3 as T. rubrum. Pigment was produced in the presence of L phenylalanine or L tyrosine but no pigment or growth occurred in the presence of quinic or shikimic acids. The T. mentagrophytes isolates reacted as A(+) mating type and the T. rubrum as a(-) when paired with Arthroderma simii A(+) and a(-) tester strains.
|Original language||English (US)|
|Number of pages||5|
|Journal||Sabouraudia Journal of Medical and Veterinary Mycology|
|State||Published - 1974|
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