Comparative investigations into the growth details of Histoplasma capsulatum var farciminosum on four different agar media

Med Mycol. 2023 Dec 1;61(12):myad124. doi: 10.1093/mmy/myad124.

Abstract

Epizootic equine lymphangitis (EEL) is a chronic fungal disease that affects equids. The causative agent is a dimorphic fungus called Histoplasma capsulatum var farciminosum. Histoplasmacapsulatum var farciminosum field strain 7 (D 2878/2023) isolated from the eye socket of an EEL Ethiopian horse was sub-cultured on four different solid media and incubated at 26°C and 37°C for 6 weeks. Details of growth morphology were recorded and shown in images during 6 weeks of incubation. Histoplasmacapsulatum var farciminosum grew best at 26°C on all four agars, but only on sheep blood agar at 37°C as small, white dry colonies.

Keywords: Histoplasma capsulatum var farciminosum; EEL; fungal morphology.

Plain language summary

Histoplasma capsulatum var farciminosum was isolated from the eye socket of an equine epizootic lymphangitis infected Ethiopian horse on Mycosel agar, which was sub-cultured on four different solid media at two different temperatures for 6 weeks to show its growth pattern.

MeSH terms

  • Agar
  • Animals
  • Culture Media
  • Histoplasma
  • Histoplasmosis* / microbiology
  • Histoplasmosis* / veterinary
  • Horse Diseases* / diagnosis
  • Horse Diseases* / microbiology
  • Horses
  • Lymphangitis* / microbiology
  • Lymphangitis* / veterinary
  • Sheep
  • Sheep Diseases*

Substances

  • Agar
  • Culture Media