200 years of taxonomic confusion: Sporendonema and allies

Hazal Kandemir; Cony Decock; Margarita Hernández-Restrepo; Roman Labuda; Jos Houbraken; Macit Ilkit; G. Sybren de Hoog

doi:10.1007/s10482-024-01935-3

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Title (eng)

200 years of taxonomic confusion: Sporendonema and allies

Author

Hazal Kandemir

Cony Decock

Margarita Hernández-Restrepo

Roman Labuda

University of Veterinary Medicine Vienna

Jos Houbraken

Macit Ilkit

G. Sybren de Hoog

Abstract (eng)

The genus Sporendonema (Gymnoascaceae, Onygenales) was introduced in 1827 with the type species S. casei for a red mould on cheese. Cheese is a consistent niche for this species. Sphaerosporium equinum is another species classified in Gymnoascaceae and has also been reported from cheese. Recently, other habitats have been reported for both Sporendonema casei and Sphaerosporium equinum. The present study aimed to investigate the taxonomy of Sporendonema and Sphaerosporium, as well as a close neighbour, Arachniotus. Two strains of Hormiscium aurantiacum, another related cheese-associated species were also included in the analyses. Strains were evaluated in terms of macro- and micromorphology, physiology including salt tolerance, growth rate at different temperatures, casein degradation, cellulase activity, lipolytic activity, and multi-locus phylogeny with sequences of the nuclear ribosomal internal transcribed spacer region, the D1-D2 region of the large subunit and partial β-tubulin locus sequences. The results showed that the analysed species were congeneric, and the generic names Arachniotus and Sphaerosporium should be reduced to the synonymy of Sporendonema. Therefore, four new combinations as well as one lectotype and one epitype were designated in Sporendonema. Two strains attributed to Sphaerosporium equinum from substrates other than cheese were found to be phylogenetically and morphologically deviant and were introduced as a new species named Sporendonema isthmoides.

Keywords (eng)

IQ-TreeSoftwareGenus

Type (eng)

journal article

Language

[eng]

Persistent identifier

https://phaidra.vetmeduni.ac.at/o:4245

DOI

10.1007/s10482-024-01935-3

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Title (eng)