Diversity of Backusella (Mucoromycotina) in south-eastern Australia revealed through polyphasic taxonomy

A. S. Urquhart, J. K. Douch, T. A. Heafield, A. G. Buddie, A. Idnurm

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Abstract

Here we explore the diversity of one morphologically distinguishable genus in the Mucoromycotina, Backusella, in south-eastern Australia. We isolated more than 200 strains from locations across the states of Victoria and Tasmania. Characterization of these strains using a combination of approaches including morphology, sucrose utilization and whole genome sequencing for 13 strains, revealed 10 new species. The genetic basis for interspecies variation in sucrose utilization was found to be the presence of a gene encoding an invertase enzyme. The genus Backusella is revised and a new key for species identification produced. Given that we have more than doubled the number of species in this genus, this work demonstrates that there may be considerable undiscovered species diversity in the early diverging fungal lineages.
Original languageEnglish
Pages (from-to)1-25
Number of pages25
JournalPersoonia: Molecular Phylogeny and Evolution of Fungi
Volume46
DOIs
Publication statusPublished - Jun 2021
Externally publishedYes

Bibliographical note

Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • Backusella
  • genome sequencing
  • invertase
  • Mucorales
  • new taxa
  • polyphasic taxonomy
  • zygospore
  • Polyphasic taxonomy
  • Genome sequencing
  • Invertase
  • New taxa
  • Zygospore

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