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Recent Taxonomic Developments with Candida and Other Opportunistic Yeasts

Mary E Brandt1, Shawn R Lockhart1

  • 1Mycotic Diseases Branch, Centers for Disease Control and Prevention, 1600 Clifton Road; Mailstop G-11, Atlanta, GA 30333, USA.

Current Fungal Infection Reports
|November 4, 2015
PubMed

Insights

Novel yeasts are increasingly recognized as human pathogens, particularly cryptic species. Advanced DNA or MALDI methods are crucial for accurate identification, improving communication between labs and clinicians.

Area of Science:

  • Medical Mycology
  • Clinical Microbiology
  • Fungal Taxonomy

Background:

  • Increasing recognition of novel yeasts as human pathogens.
  • Commonly implicated genera include Candida, Cryptococcus, Trichosporon, and Rhodotorula.
  • Cryptic species, part of species complexes, pose identification challenges.

Purpose of the Study:

  • To highlight the challenges in identifying novel yeast pathogens.
  • To emphasize the need for advanced identification methods.
  • To discuss the impact of evolving fungal taxonomy on medical mycology.

Main Methods:

  • Review of current yeast identification techniques.
  • Discussion of limitations of classical carbohydrate assimilation methods.
  • Highlighting the utility of DNA-based and MALDI-TOF mass spectrometry.

Main Results:

  • Cryptic yeast species often require molecular or mass spectrometry-based identification.
  • Classical methods may fail to accurately identify certain medically important yeasts.
  • Evolving fungal taxonomy rules aim to simplify nomenclature for medically relevant fungi.

Conclusions:

  • Accurate identification of yeast pathogens is critical for patient care.
  • Advanced identification methods are essential for detecting cryptic species.
  • Standardized nomenclature will improve communication and clinical practice.
Keywords:
Antifungal resistanceCandida speciesCryptococcus speciesEmerging fungal infectionsNon-albicans CandidaTrichosporon speciesYeast infection

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