Evaluation of the chitin-binding dye Congo red as a selection agent for the isolation, classification, and enumeration of ascomycete yeasts

Sammanfattning

Thirty-nine strains of ascomycete yeasts representing 35 species and 33 genera were tested for their ability to grow on solid agar medium containing increasing concentrations of the chitin-binding dye Congo red. Six strains were classified as hypersensitive (weak or no growth at 10 mg/l Congo red), five were moderately sensitive (weak or no growth at 50 mg/l), three were moderately tolerant (weak or no growth at 100 mg/l), while the remaining 25 strains were classified as resistant (robust growth at >= 100 mg/l) with 20 of these strains classified as hyper-resistant (robust growth at 200 mg/l). Congo red growth phenotypes were consistent within some families but not others. The frequency of Congo red resistance among ascomycete yeasts was deemed too high for the practical use of Congo red as a selection agent for targeted isolation, but can be useful for identification and enumeration of yeasts.

Nyckelord

Antifungal; Cell wall; Phenotype; Yeast

Publicerad i

Archives of Microbiology
2018, volym: 200, nummer: 4, sidor: 671-675

SLU författare

• Linder, Tomas

  • Institutionen för molekylära vetenskaper, Sveriges lantbruksuniversitet
    

Associerade SLU-program

AMR: Svampar

UKÄ forskningsämne

Mikrobiologi

Publikationens identifierare

• DOI: https://doi.org/10.1007/s00203-018-1498-y

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/93905