Easy storage strategies for Sporothrix spp. strains

Biopreserv Biobank. 2015 Apr;13(2):131-4. doi: 10.1089/bio.2014.0071.

Abstract

The present study evaluated the maintenance of Sporothrix spp. (6 Sporothrix brasiliensis; 6 S. schenckii; 5 S. mexicana, and 3 S. globosa) in saline at 4°C, and in 10% glycerol plus either 10% lactose or 10% sucrose, at -20°C and -80°C. Viability was assessed after 3, 6, and 9 months of storage, through the recovery of strains on potato dextrose agar and analysis of macro- and micromorphological features. Conidium quantification was performed before and after storage, at 3, 6 and 9 months. 100% viability was observed, regardless of storage conditions or time period. Storage at 4°C and at -20°C did not alter the number of conidia, but lower conidium counts were observed at -80°C. This study shows that the combination of glycerol with lactose or sucrose is effective to maintain Sporothrix spp. at freezing temperatures.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cryopreservation
  • Glycerol / chemistry
  • Lactose / chemistry
  • Microbial Viability
  • Preservation, Biological / methods*
  • Sporothrix / chemistry
  • Sporothrix / physiology*
  • Sucrose / chemistry
  • Time

Substances

  • Sucrose
  • Lactose
  • Glycerol