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A taxonomic revision of Aureobasidium (Saccotheciaceae, Dothideales) with new species, new names, and typifications

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Titel: A taxonomic revision of Aureobasidium (Saccotheciaceae, Dothideales) with new species, new names, and typifications
Autoren: Jumbam, B, Zasada, I A, Bensch, K, Crous, P W, Aime, M C
Quelle: Persoonia
Verlagsinformationen: Westerdijk Fungal Biodiversity Institute, 2025.
Publikationsjahr: 2025
Schlagwörter: black yeasts, Dothideomycetes, GCPSR species recognition criteria, Aureobasidium pullulans, new taxa, Research Article
Beschreibung: Aureobasidium comprises dimorphic yeast-like fungi that usually produce melanised cells at maturity. Species are globally distributed and ubiquitous, colonizing a variety of habitats. At present, ca 40 species are accepted, with the type, A. pullulans , representing a complex of unresolved cryptic species. In this study, we isolated 128 Aureobasidium from multiple temperate and tropical regions. We performed multigene analyses using eight loci (ITS, 28S, EF1a , ELO2 , RPB2 , BTUB , mtLSU and mtSSU) on new isolates and including sequences from type material for all available Aureobasidium species. Data on growth, physiological profiles, micro- and macromorphological attributes were also collected and analysed. Several DNA-based species delimitation methods were evaluated for their ability to delimit species. We found that assimilation of D-quinic acid, L-sorbose, D-mannitol, gluconolactone, erythritol, L-arabinose, and sodium succinate dibasic hexahydrate were important in delineating species of Aureobasidium and note that production of pigmentation in culture often takes longer than the 14 d standard for carbon assimilations. Genealogical concordance phylogenetic species recognition criteria (GCPSR) provided the most consistent results for species delimitation. We describe nine new species of Aureobasidium (A. albui , A. cavalettoi , A. diazvalderramae , A. ellingtonae , A. essambei , A. peruvianum , A. rubi , A. toomeae , and A. vanuatuense ), make new combinations for A. aubasidani ( ≡ A. pullulans var. aubasidani ), A. fermentans ( ≡ Pullularia fermentans ), and A. mahoniae ( ≡ Selenophoma mahoniae ), validate and provide descriptions for A. musti and A. uvarum , and provide lecto- and epitypes for Dematium pullulans, the basionym of A. pullulans . Finally, we resolved the phylogeny for Aureobasidium , reduce Kabatiella (based on K. microsticta ) to synonymy, and provide an updated list of species to facilitate future studies.The publisher's final version of this work can be found at https://doi.org/10.3114/persoonia.2025.54.05. Deposited by shareyourpaper.org and openaccessbutton.org. We've taken reasonable steps to ensure this content doesn't violate copyright. However, if you think it does you can request a takedown by emailing help@openaccessbutton.org.
Publikationsart: Article
Other literature type
Sprache: English
ISSN: 0031-5850
DOI: 10.3114/persoonia.2025.54.05
DOI: 10.5281/zenodo.17049375
DOI: 10.5281/zenodo.17049376
Zugangs-URL: https://hdl.handle.net/20.500.11755/3a53f04c-1310-48ff-bda9-88cfa25f90c6
https://pure.knaw.nl/portal/en/publications/3a53f04c-1310-48ff-bda9-88cfa25f90c6
https://doi.org/10.3114/persoonia.2025.54.05
Rights: CC BY NC ND
URL: http://creativecommons.org/licenses/by-nc-nd/4.0/You are free to share - to copy, distribute and transmit the work, under the following conditions: Attribution: You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Non-commercial: You may not use this work for commercial purposes. No derivative works: You may not alter, transform, or build upon this work. For any reuse or distribution, you must make clear to others the license terms of this work, which can be found at http://creativecommons.org/licenses/by-nc-nd/4.0/. Any of the above conditions can be waived if you get permission from the copyright holder. Nothing in this license impairs or restricts the author’s moral rights.
Dokumentencode: edsair.doi.dedup.....ac9b633cf6ee16f1fdf14bf4adc4f605
Datenbank: OpenAIRE
Beschreibung
Abstract:Aureobasidium comprises dimorphic yeast-like fungi that usually produce melanised cells at maturity. Species are globally distributed and ubiquitous, colonizing a variety of habitats. At present, ca 40 species are accepted, with the type, A. pullulans , representing a complex of unresolved cryptic species. In this study, we isolated 128 Aureobasidium from multiple temperate and tropical regions. We performed multigene analyses using eight loci (ITS, 28S, EF1a , ELO2 , RPB2 , BTUB , mtLSU and mtSSU) on new isolates and including sequences from type material for all available Aureobasidium species. Data on growth, physiological profiles, micro- and macromorphological attributes were also collected and analysed. Several DNA-based species delimitation methods were evaluated for their ability to delimit species. We found that assimilation of D-quinic acid, L-sorbose, D-mannitol, gluconolactone, erythritol, L-arabinose, and sodium succinate dibasic hexahydrate were important in delineating species of Aureobasidium and note that production of pigmentation in culture often takes longer than the 14 d standard for carbon assimilations. Genealogical concordance phylogenetic species recognition criteria (GCPSR) provided the most consistent results for species delimitation. We describe nine new species of Aureobasidium (A. albui , A. cavalettoi , A. diazvalderramae , A. ellingtonae , A. essambei , A. peruvianum , A. rubi , A. toomeae , and A. vanuatuense ), make new combinations for A. aubasidani ( ≡ A. pullulans var. aubasidani ), A. fermentans ( ≡ Pullularia fermentans ), and A. mahoniae ( ≡ Selenophoma mahoniae ), validate and provide descriptions for A. musti and A. uvarum , and provide lecto- and epitypes for Dematium pullulans, the basionym of A. pullulans . Finally, we resolved the phylogeny for Aureobasidium , reduce Kabatiella (based on K. microsticta ) to synonymy, and provide an updated list of species to facilitate future studies.The publisher's final version of this work can be found at https://doi.org/10.3114/persoonia.2025.54.05. Deposited by shareyourpaper.org and openaccessbutton.org. We've taken reasonable steps to ensure this content doesn't violate copyright. However, if you think it does you can request a takedown by emailing help@openaccessbutton.org.
ISSN:00315850
DOI:10.3114/persoonia.2025.54.05