Genotyping species of the Sporothrix schenckii complex by PCR-RFLP of calmodulin

Diagn Microbiol Infect Dis. 2014 Apr;78(4):383-7. doi: 10.1016/j.diagmicrobio.2014.01.004. Epub 2014 Jan 14.

Abstract

Sporotrichosis is one of the most common subcutaneous mycosis in Latin America and is caused by 4 pathogenic thermodimorphic fungi in the genus Sporothrix. From both therapeutic and epidemiological perspectives, it is essential to identify the causative agents down to the species level. Traditional parameters may overlap among closely related species, and we propose polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) as an alternative approach. In the present study, the calmodulin gene was amplified and digested with HhaI to yield 5 different electrophoretic patterns representing all medically important Sporothrix species: Sporothrix brasiliensis, Sporothrix schenckii sensu stricto, Sporothrix globosa, and Sporothrix luriei. The PCR-RFLP protocol described here is a simple and inexpensive method and is highly suitable for accurate routine genotyping of relevant Sporothrix species.

Keywords: Epidemiology; Molecular identification; PCR-RFLP; Sporothrix brasiliensis; Sporothrix schenckii; Sporotrichosis.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Calmodulin / genetics*
  • Humans
  • Latin America
  • Molecular Typing / methods*
  • Mycological Typing Techniques / methods*
  • Polymerase Chain Reaction / methods*
  • Polymorphism, Restriction Fragment Length*
  • Sporothrix / classification*
  • Sporothrix / genetics
  • Sporotrichosis / microbiology*

Substances

  • Calmodulin