Characterization and mating reactions of clinical isolates of Trychophyton mentagrophytes and T. rubrum which produce a diffusible brownish pigment

W. G. Merz, I. Weitzman, M. Silva Hutner

Research output: Contribution to journalArticlepeer-review

Abstract

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 languageEnglish (US)
Pages (from-to)7-11
Number of pages5
JournalSabouraudia Journal of Medical and Veterinary Mycology
Volume12
Issue number1
StatePublished - 1974
Externally publishedYes

ASJC Scopus subject areas

  • Microbiology

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