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School of Molecular & Biomedical Science |
Trichophyton terrestreTeleomorph: Arthroderma insingulare, Arthroderma lenticulare, Arthroderma quadrifidum On Sabouraud's dextrose agar, colonies are usually flat to downy with a suede-like to granular texture resembling T. mentagrophytes. The surface colour may range from white to cream, buff to yellow, or greenish-yellow. Reverse pigmentation is usually yellowish-brown although some variants have a deep rose red reverse. Microconidia are large, clavate or pedicellate, usually exhibiting transition forms to more or less abundant lateral macroconidia. Macroconidia are clavate to cylindrical with rounded ends, smooth and thin-walled, and are 2-6 celled. Chlamydoconidia, hyphal spirals, racquet mycelium and antler hyphae may also be present. RG-1 organism.
Clinical significance:Trichophyton terrestre is a geophilic fungus of world-wide distribution which may occur as a saprophytic contaminant on humans and animals. It is not known to invade hair in vivo, but produces hair perforations in vitro. Mycosis: DermatophytosisFurther reading:Rebell, G., and D. Taplin. 1970. The Dermatophytes. 2nd. revised edition. University of Miami Press, Coral Gables, Florida. USA. Rippon, J.W. 1988. Medical Mycology. 3rd Edition. W.B. Saunders Co., Philadelphia, USA.
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