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Original Article

Is Arthroderma benhamiae the perfect state of Trichophyton mentagrophytes?

Pages 122-127 | Published online: 09 Jul 2009
 

Abstract

Of 8 isolates of T. mentagrophytes and 2 of T. interdigitale none was compatible with A. benhamiae + or -.

A fertile mating between 2 T. mentagrophytes isolates enabled us to obtain numerous single ascospore isolates. Mating experiments with these isolates, their parent strains and the other isolates of T. mentagrophytes studied, revealed incompatibility between some strains of opposite type. None of the single ascospore isolates was compatible with A. benhamiae + or -, but fertile cleistothecia were obtained in matings with 2 of the other T. mentagrophytes isolates.

These results and the study of the morphology suggest that there may be at least one perfect species other than A. benhamiae in the T. mentagrophytes complex.

Resume

Aucune confrontation de 8 souches de T. mentagrophytes et de 2 de T. interdigitale avec A. benhamiae + ou - ne s'est montrée fertile.

Une confrontation fertile entre 2 souches de T. mentagrophytes nous a permis d'obtenir de nombreuses souches monoascospores de ce dermatophyte. Si certaines combinaisons + x - des souches monoascospores entre elles, ou avec les souches mères, ou avec d'autres souches de T. mentagrophytes sont fertiles, toutes cependant ne le sont pas.

Néanmoins aucune de ces souches monospores n'est compatible avec A. benhamiae + ou -.

Ce travail, ainsi qu'une étude morphologique, suggère qu'il existe au moins une espèce parfaite autre que A. benhamiae dans le complexe T. mentagrophytes.

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