The genus Cortinarius should not (yet) be split
Abstract The genus Cortinarius (Agaricales, Basidiomycota) is one of the most species-rich fungal genera, with thousands of species reported. Cortinarius species are important ectomycorrhizal fungi and form associations with many vascular plants globally. Until recently Cortinarius was the single ge...
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| Language: | English |
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BMC
2024-08-01
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| Series: | IMA Fungus |
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| Online Access: | https://doi.org/10.1186/s43008-024-00159-4 |
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| author | Brigida Gallone Thomas W. Kuyper Jorinde Nuytinck |
| author_facet | Brigida Gallone Thomas W. Kuyper Jorinde Nuytinck |
| author_sort | Brigida Gallone |
| collection | DOAJ |
| description | Abstract The genus Cortinarius (Agaricales, Basidiomycota) is one of the most species-rich fungal genera, with thousands of species reported. Cortinarius species are important ectomycorrhizal fungi and form associations with many vascular plants globally. Until recently Cortinarius was the single genus of the family Cortinariaceae, despite several attempts to provide a workable, lower-rank hierarchical structure based on subgenera and sections. The first phylogenomic study for this group elevated the old genus Cortinarius to family level and the family was split into ten genera, of which seven were described as new. Here, by careful re-examination of the recently published phylogenomic dataset, we detected extensive gene-tree/species-tree conflicts using both concatenation and multispecies coalescent approaches. Our analyses demonstrate that the Cortinarius phylogeny remains unresolved and the resulting phylogenomic hypotheses suffer from very short and unsupported branches in the backbone. We can confirm monophyly of only four out of ten suggested new genera, leaving uncertain the relationships between each other and the general branching order. Thorough exploration of the tree space demonstrated that the topology on which Cortinarius revised classification relies on does not represent the best phylogenetic hypothesis and should not be used as constrained topology to include additional species. For this reason, we argue that based on available evidence the genus Cortinarius should not (yet) be split. Moreover, considering that phylogenetic uncertainty translates to taxonomic uncertainty, we advise for careful evaluation of phylogenomic datasets before proposing radical taxonomic and nomenclatural changes. |
| format | Article |
| id | doaj-art-6aef95e9105946098530029fa8d37788 |
| institution | Kabale University |
| issn | 2210-6359 |
| language | English |
| publishDate | 2024-08-01 |
| publisher | BMC |
| record_format | Article |
| series | IMA Fungus |
| spelling | doaj-art-6aef95e9105946098530029fa8d377882025-02-03T00:31:20ZengBMCIMA Fungus2210-63592024-08-0115111410.1186/s43008-024-00159-4The genus Cortinarius should not (yet) be splitBrigida Gallone0Thomas W. Kuyper1Jorinde Nuytinck2Naturalis Biodiversity CenterNaturalis Biodiversity CenterNaturalis Biodiversity CenterAbstract The genus Cortinarius (Agaricales, Basidiomycota) is one of the most species-rich fungal genera, with thousands of species reported. Cortinarius species are important ectomycorrhizal fungi and form associations with many vascular plants globally. Until recently Cortinarius was the single genus of the family Cortinariaceae, despite several attempts to provide a workable, lower-rank hierarchical structure based on subgenera and sections. The first phylogenomic study for this group elevated the old genus Cortinarius to family level and the family was split into ten genera, of which seven were described as new. Here, by careful re-examination of the recently published phylogenomic dataset, we detected extensive gene-tree/species-tree conflicts using both concatenation and multispecies coalescent approaches. Our analyses demonstrate that the Cortinarius phylogeny remains unresolved and the resulting phylogenomic hypotheses suffer from very short and unsupported branches in the backbone. We can confirm monophyly of only four out of ten suggested new genera, leaving uncertain the relationships between each other and the general branching order. Thorough exploration of the tree space demonstrated that the topology on which Cortinarius revised classification relies on does not represent the best phylogenetic hypothesis and should not be used as constrained topology to include additional species. For this reason, we argue that based on available evidence the genus Cortinarius should not (yet) be split. Moreover, considering that phylogenetic uncertainty translates to taxonomic uncertainty, we advise for careful evaluation of phylogenomic datasets before proposing radical taxonomic and nomenclatural changes.https://doi.org/10.1186/s43008-024-00159-4PhylogenomicsClassificationNomenclaturePhylogenetic conflict |
| spellingShingle | Brigida Gallone Thomas W. Kuyper Jorinde Nuytinck The genus Cortinarius should not (yet) be split IMA Fungus Phylogenomics Classification Nomenclature Phylogenetic conflict |
| title | The genus Cortinarius should not (yet) be split |
| title_full | The genus Cortinarius should not (yet) be split |
| title_fullStr | The genus Cortinarius should not (yet) be split |
| title_full_unstemmed | The genus Cortinarius should not (yet) be split |
| title_short | The genus Cortinarius should not (yet) be split |
| title_sort | genus cortinarius should not yet be split |
| topic | Phylogenomics Classification Nomenclature Phylogenetic conflict |
| url | https://doi.org/10.1186/s43008-024-00159-4 |
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