Characterization and rank assignment criteria for the anaerobic fungi (Neocallimastigomycota)

Mostafa S. Elshahed*, Radwa A. Hanafy, Yanfen Cheng, Sumit S. Dagar, Joan E. Edwards, Veronika Flad, Kateřina Olša Fliegerová, Gareth W. Griffith, Sandra Kittelmann, Michael Lebuhn, Michelle A. O'malley, Sabine Marie Podmirseg, Kevin V. Solomon, Julia Vinzelj, Diana Young, Noha H. Youssef

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (SciVal)
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Establishing a solid taxonomic framework is crucial for enabling discovery and documentation efforts. This ensures effective communication between scientists as well as reproducibility of results between laboratories, and facilitates the exchange and preservation of biological material. Such framework can only be achieved by establishing clear criteria for taxa characterization and rank assignment. Within the anaerobic fungi (phylum Neocallimastigomycota), the need for such criteria is especially vital. Difficulties associated with their isolation, maintenance and long-term storage often result in limited availability and loss of previously described taxa. To this end, we provide here a list of morphological, microscopic, phylogenetic and phenotypic criteria for assessment and documentation when characterizing newly obtained Neocallimastigomycota isolates. We also recommend a polyphasic rank-assignment scheme for novel genus-, species-and strain-level designations for newly obtained Neocallimastigomycota isolates.

Original languageEnglish
Article number005449
Number of pages7
JournalInternational Journal of Systematic and Evolutionary Microbiology
Issue number7
Publication statusPublished - 19 Jul 2022


  • anaerobic fungi
  • characterization
  • large ribosomal subunit
  • Nocallimastigomycota
  • rank assignment


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