The order Eurotiales is diverse and includes species that impact our daily lives in many ways. In the past, its taxonomy was difficult due to morphological similarities, which made accurate identification of species difficult. This situation improved and stabilised with recent taxonomic and nomenclatural revisions that modernised Aspergillus, Penicillium and Talaromyces. This was mainly due to the availability of curated accepted species lists and the publication of comprehensive DNA sequence reference datasets. This has also led to a sharp increase in the number of new species described each year with the accepted species lists in turn also needing regular updates. The focus of this study was to review the 160 species described between the last list of accepted species published in 2020 until 31 December 2022. To review these species, single-gene phylogenies were constructed and GCPSR (Genealogical Concordance Phylogenetic Species Recognition) was applied. Multi-gene phylogenetic analyses were performed to further determine the relationships of the newly introduced species. As a result, we accepted 133 species (37 Aspergillus, two Paecilomyces, 59 Penicillium, two Rasamsonia, 32 Talaromyces and one Xerochrysium), synonymised 22, classified four as doubtful and created a new combination for Paraxerochrysium coryli, which is classified in Xerochrysium. This brings the number of accepted species to 453 for Aspergillus, 12 for Paecilomyces, 535 for Penicillium, 14 for Rasamsonia, 203 for Talaromyces and four for Xerochrysium. We accept the newly introduced section Tenues (in Talaromyces), and series Hainanici (in Aspergillus sect. Cavernicolarum) and Vascosobrinhoana (in Penicillium sect. Citrina). In addition, we validate the invalidly described species Aspergillus annui and A. saccharicola, and series Annuorum (in Aspergillus sect. Flavi), introduce a new combination for Dichlaena lentisci (type of the genus) and place it in a new section in Aspergillus subgenus Circumdati, provide an updated description for Rasamsonia oblata, and list excluded and recently synonymised species that were previously accepted. This study represents an important update of the accepted species lists in Eurotiales. Taxonomic novelties: New sections: Aspergillus section Dichlaena Visagie, Kocsubé & Houbraken. New series: Aspergillus series Annuorum J.J. Silva, B.T. Iamanaka, Frisvad. New species: Aspergillus annui J.J. Silva, M.H.P. Fungaro, Frisvad, M.H. Taniwaki & B.T. Iamanaka; Aspergillus saccharicola J.J. Silva, Frisvad, M.H.P. Fungaro, M.H. Taniwaki & B.T. Iamanaka. New combinations: Aspergillus lentisci (Durieu & Mont.) Visagie, Malloch, L. Kriegsteiner, Samson & Houbraken; Xerochrysium coryli (Crous & Decock) Visagie & Houbraken. Citation: Visagie CM, Yilmaz N, Kocsubé S, Frisvad JC, Hubka V, Samson RA, Houbraken J (2024). A review of recently introduced Aspergillus, Penicillium, Talaromyces and other Eurotiales species. Studies in Mycology 107: 1-66. doi: 10.3114/sim.2024.107.01.

• Klíčová slova
• Accepted species list, Aspergillaceae, DNA barcodes, Penicillaginaceae, Thermoascaceae, Trichocomaceae, new taxa, nomenclature, phylogenetic species concept,
• Publikační typ
• časopisecké články MeSH

The rapid pace of name changes of medically important fungi is creating challenges for clinical laboratories and clinicians involved in patient care. We describe two sources of name change which have different drivers, at the species versus the genus level. Some suggestions are made here to reduce the number of name changes. We urge taxonomists to provide diagnostic markers of taxonomic novelties. Given the instability of phylogenetic trees due to variable taxon sampling, we advocate to maintain genera at the largest possible size. Reporting of identified species in complexes or series should where possible comprise both the name of the overarching species and that of the molecular sibling, often cryptic species. Because the use of different names for the same species will be unavoidable for many years to come, an open access online database of the names of all medically important fungi, with proper nomenclatural designation and synonymy, is essential. We further recommend that while taxonomic discovery continues, the adaptation of new name changes by clinical laboratories and clinicians be reviewed routinely by a standing committee for validation and stability over time, with reference to an open access database, wherein reasons for changes are listed in a transparent way.

• Klíčová slova
• fungi, nomenclature, taxonomy,
• MeSH
• databáze faktografické MeSH
• fylogeneze MeSH
• houby * genetika   MeSH
• lidé MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH

The Aspergillus series Nigri contains biotechnologically and medically important species. They can produce hazardous mycotoxins, which is relevant due to the frequent occurrence of these species on foodstuffs and in the indoor environment. The taxonomy of the series has undergone numerous rearrangements, and currently, there are 14 species accepted in the series, most of which are considered cryptic. Species-level identifications are, however, problematic or impossible for many isolates even when using DNA sequencing or MALDI-TOF mass spectrometry, indicating a possible problem in the definition of species limits or the presence of undescribed species diversity. To re-examine the species boundaries, we collected DNA sequences from three phylogenetic markers (benA, CaM and RPB2) for 276 strains from series Nigri and generated 18 new whole-genome sequences. With the three-gene dataset, we employed phylogenetic methods based on the multispecies coalescence model, including four single-locus methods (GMYC, bGMYC, PTP and bPTP) and one multilocus method (STACEY). From a total of 15 methods and their various settings, 11 supported the recognition of only three species corresponding to the three main phylogenetic lineages: A. niger, A. tubingensis and A. brasiliensis. Similarly, recognition of these three species was supported by the GCPSR approach (Genealogical Concordance Phylogenetic Species Recognition) and analysis in DELINEATE software. We also showed that the phylogeny based on benA, CaM and RPB2 is suboptimal and displays significant differences from a phylogeny constructed using 5 752 single-copy orthologous proteins; therefore, the results of the delimitation methods may be subject to a higher than usual level of uncertainty. To overcome this, we randomly selected 200 genes from these genomes and performed ten independent STACEY analyses, each with 20 genes. All analyses supported the recognition of only one species in the A. niger and A. brasiliensis lineages, while one to four species were inconsistently delimited in the A. tubingensis lineage. After considering all of these results and their practical implications, we propose that the revised series Nigri includes six species: A. brasiliensis, A. eucalypticola, A. luchuensis (syn. A. piperis), A. niger (syn. A. vinaceus and A. welwitschiae), A. tubingensis (syn. A. chiangmaiensis, A. costaricensis, A. neoniger and A. pseudopiperis) and A. vadensis. We also showed that the intraspecific genetic variability in the redefined A. niger and A. tubingensis does not deviate from that commonly found in other aspergilli. We supplemented the study with a list of accepted species, synonyms and unresolved names, some of which may threaten the stability of the current taxonomy. Citation: Bian C, Kusuya Y, Sklenář F, D'hooge E, Yaguchi T, Ban S, Visagie CM, Houbraken J, Takahashi H, Hubka V (2022). Reducing the number of accepted species in Aspergillus series Nigri. Studies in Mycology 102: 95-132. doi: 10.3114/sim.2022.102.03.

• Klíčová slova
• Aspergillus luchuensis, Aspergillus niger, Aspergillus tubingensis, clinical fungi, indoor fungi, infraspecific variability, multigene phylogeny, multispecies coalescence model, ochratoxin A, species delimitation,
• Publikační typ
• časopisecké články MeSH

Since the last revision in 2015, the taxonomy of section Flavipedes evolved rapidly along with the availability of new species delimitation techniques. This study aims to re-evaluate the species boundaries of section Flavipedes members using modern delimitation methods applied to an extended set of strains (n = 90) collected from various environments. The analysis used DNA sequences of three house-keeping genes (benA, CaM, RPB2) and consisted of two steps: application of several single-locus (GMYC, bGMYC, PTP, bPTP) and multi-locus (STACEY) species delimitation methods to sort the isolates into putative species, which were subsequently validated using DELINEATE software that was applied for the first time in fungal taxonomy. As a result, four new species are introduced, i.e. A. alboluteus, A. alboviridis, A. inusitatus and A. lanuginosus, and A. capensis is synonymized with A. iizukae. Phenotypic analyses were performed for the new species and their relatives, and the results showed that the growth parameters at different temperatures and colonies characteristics were useful for differentiation of these taxa. The revised section harbors 18 species, most of them are known from soil. However, the most common species from the section are ecologically diverse, occurring in the indoor environment (six species), clinical samples (five species), food and feed (four species), droppings (four species) and other less common substrates/environments. Due to the occurrence of section Flavipedes species in the clinical material/hospital environment, we also evaluated the susceptibility of 67 strains to six antifungals (amphotericin B, itraconazole, posaconazole, voriconazole, isavuconazole, terbinafine) using the reference EUCAST method. These results showed some potentially clinically relevant differences in susceptibility between species. For example, MICs higher than those observed for A. fumigatus wild-type were found for both triazoles and amphotericin B for A. ardalensis, A. iizukae, and A. spelaeus whereas A. lanuginosus, A. luppiae, A. movilensis, A. neoflavipes, A. olivimuriae and A. suttoniae were comparable to or more susceptible as A. fumigatus. Finally, terbinafine was in vitro active against all species except A. alboviridis.

• Klíčová slova
• Antifungal susceptibility testing, Aspergillus alboluteus F. Sklenar, Jurjević, Ezekiel, Houbraken & Hubka, Aspergillus alboviridis J.P.Z. Siqueira, Gené, F. Sklenar & Hubka, Aspergillus flavipes, Aspergillus inusitatus F. Sklenar, C. Silva Pereira, Houbraken & Hubka, Aspergillus lanuginosus F. Sklenar & Hubka, Clinical fungi, Indoor fungi, Multigene phylogeny, Soil-borne fungi, Species delimitation,
• Publikační typ
• časopisecké články MeSH

We investigated ochratoxin A (OTA) contamination in raisin samples purchased from Slovak markets and determined the diversity of black-spored aspergilli as potential OTA and fumonisin (FB1 and FB2) producers. The taxonomic identification was performed using sequences of the nuclear ITS1-5.8s-ITS2 region, the calmodulin and beta-tubulin genes. We obtained 239 isolates from eight fungal genera, of which 197 belonged to Aspergillus (82%) and 42 strains (18%) to other fungal genera. OTA contamination was evidenced in 75% of the samples and its level ranged from 0.8 to 10.6 µg/kg. The combination of all three markers used enabled unambiguous identification of A. carbonarius, A. luchuensis, A. niger, A. tubingensis and A. welwitschiae. The dominant coloniser, simultaneously having the highest within-species diversity isolated from our raisin samples, was A. tubingensis. Out of all analysed strains, only A. carbonarius was found to produce OTA, but in relatively high quantity (2477-4382 µg/kg). The production of FB1 and FB2 was evidenced in A. niger strains only.

• Klíčová slova
• HPLC, beta-tubulin, calmodulin, food spoilage, fungal diversity, mycotoxin,
• MeSH
• Aspergillus genetika   metabolismus   MeSH
• fumonisiny metabolismus   toxicita   MeSH
• fylogeneze MeSH
• genetická variace * MeSH
• hodnocení rizik MeSH
• konzervace potravin MeSH
• ochratoxiny metabolismus   toxicita   MeSH
• ovoce mikrobiologie   MeSH
• potravinářská mikrobiologie MeSH
• Vitis mikrobiologie   MeSH
• vysoušení MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Názvy látek
• fumonisin B1 MeSH Prohlížeč
• fumonisin B2 MeSH Prohlížeč
• fumonisiny MeSH
• ochratoxin A MeSH Prohlížeč
• ochratoxiny MeSH

The Eurotiales is a relatively large order of Ascomycetes with members frequently having positive and negative impact on human activities. Species within this order gain attention from various research fields such as food, indoor and medical mycology and biotechnology. In this article we give an overview of families and genera present in the Eurotiales and introduce an updated subgeneric, sectional and series classification for Aspergillus and Penicillium. Finally, a comprehensive list of accepted species in the Eurotiales is given. The classification of the Eurotiales at family and genus level is traditionally based on phenotypic characters, and this classification has since been challenged using sequence-based approaches. Here, we re-evaluated the relationships between families and genera of the Eurotiales using a nine-gene sequence dataset. Based on this analysis, the new family Penicillaginaceae is introduced and four known families are accepted: Aspergillaceae, Elaphomycetaceae, Thermoascaceae and Trichocomaceae. The Eurotiales includes 28 genera: 15 genera are accommodated in the Aspergillaceae (Aspergillago, Aspergillus, Evansstolkia, Hamigera, Leiothecium, Monascus, Penicilliopsis, Penicillium, Phialomyces, Pseudohamigera, Pseudopenicillium, Sclerocleista, Warcupiella, Xerochrysium and Xeromyces), eight in the Trichocomaceae (Acidotalaromyces, Ascospirella, Dendrosphaera, Rasamsonia, Sagenomella, Talaromyces, Thermomyces, Trichocoma), two in the Thermoascaceae (Paecilomyces, Thermoascus) and one in the Penicillaginaceae (Penicillago). The classification of the Elaphomycetaceae was not part of this study, but according to literature two genera are present in this family (Elaphomyces and Pseudotulostoma). The use of an infrageneric classification system has a long tradition in Aspergillus and Penicillium. Most recent taxonomic studies focused on the sectional level, resulting in a well-established sectional classification in these genera. In contrast, a series classification in Aspergillus and Penicillium is often outdated or lacking, but is still relevant, e.g., the allocation of a species to a series can be highly predictive in what functional characters the species might have and might be useful when using a phenotype-based identification. The majority of the series in Aspergillus and Penicillium are invalidly described and here we introduce a new series classification. Using a phylogenetic approach, often supported by phenotypic, physiologic and/or extrolite data, Aspergillus is subdivided in six subgenera, 27 sections (five new) and 75 series (73 new, one new combination), and Penicillium in two subgenera, 32 sections (seven new) and 89 series (57 new, six new combinations). Correct identification of species belonging to the Eurotiales is difficult, but crucial, as the species name is the linking pin to information. Lists of accepted species are a helpful aid for researchers to obtain a correct identification using the current taxonomic schemes. In the most recent list from 2014, 339 Aspergillus, 354 Penicillium and 88 Talaromyces species were accepted. These numbers increased significantly, and the current list includes 446 Aspergillus (32 % increase), 483 Penicillium (36 % increase) and 171 Talaromyces (94 % increase) species, showing the large diversity and high interest in these genera. We expanded this list with all genera and species belonging to the Eurotiales (except those belonging to Elaphomycetaceae). The list includes 1 187 species, distributed over 27 genera, and contains MycoBank numbers, collection numbers of type and ex-type cultures, subgenus, section and series classification data, information on the mode of reproduction, and GenBank accession numbers of ITS, beta-tubulin (BenA), calmodulin (CaM) and RNA polymerase II second largest subunit (RPB2) gene sequences.

• Klíčová slova
• Acidotalaromyces Houbraken, Frisvad & Samson, Acidotalaromyces lignorum (Stolk) Houbraken, Frisvad & Samson, Ascospirella Houbraken, Frisvad & Samson, Ascospirella lutea (Zukal) Houbraken, Frisvad & Samson, Aspergillus chaetosartoryae Hubka, Kocsubé & Houbraken, Classification, Evansstolkia Houbraken, Frisvad & Samson, Evansstolkia leycettana (H.C. Evans & Stolk) Houbraken, Frisvad & Samson, Hamigera brevicompacta (H.Z. Kong) Houbraken, Frisvad & Samson, Infrageneric classification, New combinations, series, New combinations, species, New genera, New names, New sections, New series, New taxa, Nomenclature, Paecilomyces lagunculariae (C. Ram) Houbraken, Frisvad & Samson, Penicillaginaceae Houbraken, Frisvad & Samson, Penicillago kabunica (Baghd.) Houbraken, Frisvad & Samson, Penicillago mirabilis (Beliakova & Milko) Houbraken, Frisvad & Samson, Penicillago moldavica (Milko & Beliakova) Houbraken, Frisvad & Samson, Phialomyces arenicola (Chalab.) Houbraken, Frisvad & Samson, Phialomyces humicoloides (Bills & Heredia) Houbraken, Frisvad & Samson, Phylogeny, Polythetic classes, Pseudohamigera Houbraken, Frisvad & Samson, Pseudohamigera striata (Raper & Fennell) Houbraken, Frisvad & Samson, Talaromyces resinae (Z.T. Qi & H.Z. Kong) Houbraken & X.C. Wang, Talaromyces striatoconidius Houbraken, Frisvad & Samson, Taxonomic novelties: New family, Thermoascus verrucosus (Samson & Tansey) Houbraken, Frisvad & Samson, Thermoascus yaguchii Houbraken, Frisvad & Samson, in Aspergillus: sect. Bispori S.W. Peterson, Varga, Frisvad, Samson ex Houbraken, in Aspergillus: ser. Acidohumorum Houbraken & Frisvad, in Aspergillus: ser. Inflati (Stolk & Samson) Houbraken & Frisvad, in Penicillium: sect. Alfrediorum Houbraken & Frisvad, in Penicillium: ser. Adametziorum Houbraken & Frisvad, in Penicillium: ser. Alutacea (Pitt) Houbraken & Frisvad, sect. Crypta Houbraken & Frisvad, sect. Eremophila Houbraken & Frisvad, sect. Formosana Houbraken & Frisvad, sect. Griseola Houbraken & Frisvad, sect. Inusitata Houbraken & Frisvad, sect. Lasseniorum Houbraken & Frisvad, sect. Polypaecilum Houbraken & Frisvad, sect. Raperorum S.W. Peterson, Varga, Frisvad, Samson ex Houbraken, sect. Silvatici S.W. Peterson, Varga, Frisvad, Samson ex Houbraken, sect. Vargarum Houbraken & Frisvad, ser. Alliacei Houbraken & Frisvad, ser. Ambigui Houbraken & Frisvad, ser. Angustiporcata Houbraken & Frisvad, ser. Arxiorum Houbraken & Frisvad, ser. Atramentosa Houbraken & Frisvad, ser. Aurantiobrunnei Houbraken & Frisvad, ser. Avenacei Houbraken & Frisvad, ser. Bertholletiarum Houbraken & Frisvad, ser. Biplani Houbraken & Frisvad, ser. Brevicompacta Houbraken & Frisvad, ser. Brevipedes Houbraken & Frisvad, ser. Brunneouniseriati Houbraken & Frisvad, ser. Buchwaldiorum Houbraken & Frisvad, ser. Calidousti Houbraken & Frisvad, ser. Canini Houbraken & Frisvad, ser. Carbonarii Houbraken & Frisvad, ser. Cavernicolarum Houbraken & Frisvad, ser. Cervini Houbraken & Frisvad, ser. Chevalierorum Houbraken & Frisvad, ser. Cinnamopurpurea Houbraken & Frisvad, ser. Circumdati Houbraken & Frisvad, ser. Clavigera Houbraken & Frisvad, ser. Conjuncti Houbraken & Frisvad, ser. Copticolarum Houbraken & Frisvad, ser. Coremiiformes Houbraken & Frisvad, ser. Corylophila Houbraken & Frisvad, ser. Costaricensia Houbraken & Frisvad, ser. Cremei Houbraken & Frisvad, ser. Crustacea (Pitt) Houbraken & Frisvad, ser. Dalearum Houbraken & Frisvad, ser. Deflecti Houbraken & Frisvad, ser. Egyptiaci Houbraken & Frisvad, ser. Erubescentia (Pitt) Houbraken & Frisvad, ser. Estinogena Houbraken & Frisvad, ser. Euglauca Houbraken & Frisvad, ser. Fennelliarum Houbraken & Frisvad, ser. Flavi Houbraken & Frisvad, ser. Flavipedes Houbraken & Frisvad, ser. Fortuita Houbraken & Frisvad, ser. Fumigati Houbraken & Frisvad, ser. Funiculosi Houbraken & Frisvad, ser. Gallaica Houbraken & Frisvad, ser. Georgiensia Houbraken & Frisvad, ser. Goetziorum Houbraken & Frisvad, ser. Gracilenta Houbraken & Frisvad, ser. Halophilici Houbraken & Frisvad, ser. Herqueorum Houbraken & Frisvad, ser. Heteromorphi Houbraken & Frisvad, ser. Hoeksiorum Houbraken & Frisvad, ser. Homomorphi Houbraken & Frisvad, ser. Idahoensia Houbraken & Frisvad, ser. Implicati Houbraken & Frisvad, ser. Improvisa Houbraken & Frisvad, ser. Indica Houbraken & Frisvad, ser. Japonici Houbraken & Frisvad, ser. Jiangxiensia Houbraken & Frisvad, ser. Kalimarum Houbraken & Frisvad, ser. Kiamaensia Houbraken & Frisvad, ser. Kitamyces Houbraken & Frisvad, ser. Lapidosa (Pitt) Houbraken & Frisvad, ser. Leporum Houbraken & Frisvad, ser. Leucocarpi Houbraken & Frisvad, ser. Livida Houbraken & Frisvad, ser. Longicatenata Houbraken & Frisvad, ser. Macrosclerotiorum Houbraken & Frisvad, ser. Monodiorum Houbraken & Frisvad, ser. Multicolores Houbraken & Frisvad, ser. Neoglabri Houbraken & Frisvad, ser. Neonivei Houbraken & Frisvad, ser. Nidulantes Houbraken & Frisvad, ser. Nigri Houbraken & Frisvad, ser. Nivei Houbraken & Frisvad, ser. Nodula Houbraken & Frisvad, ser. Nomiarum Houbraken & Frisvad, ser. Noonimiarum Houbraken & Frisvad, ser. Ochraceorosei Houbraken & Frisvad, ser. Olivimuriarum Houbraken & Frisvad, ser. Osmophila Houbraken & Frisvad, ser. Paradoxa Houbraken & Frisvad, ser. Paxillorum Houbraken & Frisvad, ser. Penicillioides Houbraken & Frisvad, ser. Phoenicea Houbraken & Frisvad, ser. Pinetorum (Pitt) Houbraken & Frisvad, ser. Polypaecilum Houbraken & Frisvad, ser. Pulvini Houbraken & Frisvad, ser. Quercetorum Houbraken & Frisvad, ser. Raistrickiorum Houbraken & Frisvad, ser. Ramigena Houbraken & Frisvad, ser. Restricti Houbraken & Frisvad, ser. Robsamsonia Houbraken & Frisvad, ser. Rolfsiorum Houbraken & Frisvad, ser. Roseopurpurea Houbraken & Frisvad, ser. Rubri Houbraken & Frisvad, ser. Salinarum Houbraken & Frisvad, ser. Samsoniorum Houbraken & Frisvad, ser. Saturniformia Houbraken & Frisvad, ser. Scabrosa Houbraken & Frisvad, ser. Sclerotigena Houbraken & Frisvad, ser. Sclerotiorum Houbraken & Frisvad, ser. Sheariorum Houbraken & Frisvad, ser. Simplicissima Houbraken & Frisvad, ser. Soppiorum Houbraken & Frisvad, ser. Sparsi Houbraken & Frisvad, ser. Spathulati Houbraken & Frisvad, ser. Spelaei Houbraken & Frisvad, ser. Speluncei Houbraken & Frisvad, ser. Spinulosa Houbraken & Frisvad, ser. Stellati Houbraken & Frisvad, ser. Steyniorum Houbraken & Frisvad, ser. Sublectatica Houbraken & Frisvad, ser. Sumatraensia Houbraken & Frisvad, ser. Tamarindosolorum Houbraken & Frisvad, ser. Teporium Houbraken & Frisvad, ser. Terrei Houbraken & Frisvad, ser. Thermomutati Houbraken & Frisvad, ser. Thiersiorum Houbraken & Frisvad, ser. Thomiorum Houbraken & Frisvad, ser. Unguium Houbraken & Frisvad, ser. Unilaterales Houbraken & Frisvad, ser. Usti Houbraken & Frisvad, ser. Verhageniorum Houbraken & Frisvad, ser. Versicolores Houbraken & Frisvad, ser. Virgata Houbraken & Frisvad, ser. Viridinutantes Houbraken & Frisvad, ser. Vitricolarum Houbraken & Frisvad, ser. Wentiorum Houbraken & Frisvad, ser. Westlingiorum Houbraken & Frisvad, ser. Whitfieldiorum Houbraken & Frisvad, ser. Xerophili Houbraken & Frisvad, series Tularensia (Pitt) Houbraken & Frisvad,
• Publikační typ
• časopisecké články MeSH

Although Aspergillus fumigatus is the major agent of invasive aspergillosis, an increasing number of infections are caused by its cryptic species, especially A. lentulus and the A. viridinutans species complex (AVSC). Their identification is clinically relevant because of antifungal drug resistance and refractory infections. Species boundaries in the AVSC are unresolved since most species have uniform morphology and produce interspecific hybrids in vitro. Clinical and environmental strains from six continents (n = 110) were characterized by DNA sequencing of four to six loci. Biological compatibilities were tested within and between major phylogenetic clades, and ascospore morphology was characterised. Species delimitation methods based on the multispecies coalescent model (MSC) supported recognition of ten species including one new species. Four species are confirmed opportunistic pathogens; A. udagawae followed by A. felis and A. pseudoviridinutans are known from opportunistic human infections, while A. felis followed by A. udagawae and A. wyomingensis are agents of feline sino-orbital aspergillosis. Recently described human-pathogenic species A. parafelis and A. pseudofelis are synonymized with A. felis and an epitype is designated for A. udagawae. Intraspecific mating assay showed that only a few of the heterothallic species can readily generate sexual morphs in vitro. Interspecific mating assays revealed that five different species combinations were biologically compatible. Hybrid ascospores had atypical surface ornamentation and significantly different dimensions compared to parental species. This suggests that species limits in the AVSC are maintained by both pre- and post-zygotic barriers and these species display a great potential for rapid adaptation and modulation of virulence. This study highlights that a sufficient number of strains representing genetic diversity within a species is essential for meaningful species boundaries delimitation in cryptic species complexes. MSC-based delimitation methods are robust and suitable tools for evaluation of boundaries between these species.

• Klíčová slova
• Aspergillus felis, Aspergillus fumigatus, Neosartorya udagawae, invasive aspergillosis, mating-type genes, multispecies coalescence model, scanning electron microscopy, soil fungi,
• Publikační typ
• časopisecké články MeSH

Aspergillus section Restricti together with sister section Aspergillus (formerly Eurotium) comprises xerophilic species, that are able to grow on substrates with low water activity and in extreme environments. We adressed the monophyly of both sections within subgenus Aspergillus and applied a multidisciplinary approach for definition of species boundaries in sect. Restricti. The monophyly of sections Aspergillus and Restricti was tested on a set of 102 isolates comprising all currently accepted species and was strongly supported by Maximum likelihood (ML) and Bayesian inferrence (BI) analysis based on β-tubulin (benA), calmodulin (CaM) and RNA polymerase II second largest subunit (RPB2) loci. More than 300 strains belonging to sect. Restricti from various isolation sources and four continents were characterized by DNA sequencing, and 193 isolates were selected for phylogenetic analyses and phenotypic studies. Species delimitation methods based on multispecies coalescent model were employed on DNA sequences from four loci, i.e., ID region of rDNA (ITS + 28S), CaM, benA and RPB2, and supported recognition of 21 species, including 14 new. All these species were also strongly supported in ML and BI analyses. All recognised species can be reliably identified by all four examined genetic loci. Phenotype analysis was performed to support the delimitation of new species and includes colony characteristics on seven cultivation media incubated at several temperatures, growth on an osmotic gradient (six media with NaCl concentration from 0 to 25 %) and analysis of morphology including scanning electron microscopy. The micromorphology of conidial heads, vesicle dimensions, temperature profiles and growth parameters in osmotic gradient were useful criteria for species identification. The vast majority of species in sect. Restricti produce asperglaucide, asperphenamate or both in contrast to species in sect. Aspergillus. Mycophenolic acid was detected for the first time in at least six members of the section. The ascomata of A. halophilicus do not contain auroglaucin, epiheveadride or flavoglaucin which are common in sect. Aspergillus, but shares the echinulins with sect. Aspergillus.

• Klíčová slova
• Aspergillus canadensis Visagie, Yilmaz, F. Sklenar & Seifert, Aspergillus clavatophorus F. Sklenar, S.W. Peterson & Hubka, Aspergillus destruens Zalar, F. Sklenar, S.W. Peterson & Hubka, Aspergillus domesticus F. Sklenar, Houbraken, Zalar & Hubka, Aspergillus glabripes F. Sklenar, Ž. Jurjević & Hubka, Aspergillus hordei F. Sklenar, S.W. Peterson & Hubka, Aspergillus infrequens F. Sklenar, S.W. Peterson & Hubka, Aspergillus magnivesiculatus F. Sklenar, Zalar, Ž. Jurjević & Hubka, Aspergillus pachycaulis F. Sklenar, S.W. Peterson, Ž. Jurjević & Hubka, Aspergillus penicillioides, Aspergillus pseudogracilis F. Sklenar, Ž. Jurjević & Hubka, Aspergillus restrictus, Aspergillus reticulatus F. Sklenar, Ž. Jurjević, S.W. Peterson & Hubka, Aspergillus salinicola Zalar, F. Sklenar, Visagie & Hubka, Aspergillus tardicrescens F. Sklenar, Houbraken, Zalar, & Hubka, Aspergillus villosus F. Sklenar, S.W. Peterson & Hubka, Eurotium, food spoilage, indoor fungi, linear discriminant analysis, multigene phylogeny, multispecies coalescent model, sick building syndrome, xerophilic fungi,
• Publikační typ
• časopisecké články MeSH

Aspergillus section Aspergillus (formerly the genus Eurotium) includes xerophilic species with uniseriate conidiophores, globose to subglobose vesicles, green conidia and yellow, thin walled eurotium-like ascomata with hyaline, lenticular ascospores. In the present study, a polyphasic approach using morphological characters, extrolites, physiological characters and phylogeny was applied to investigate the taxonomy of this section. Over 500 strains from various culture collections and new isolates obtained from indoor environments and a wide range of substrates all over the world were identified using calmodulin gene sequencing. Of these, 163 isolates were subjected to molecular phylogenetic analyses using sequences of ITS rDNA, partial β-tubulin (BenA), calmodulin (CaM) and RNA polymerase II second largest subunit (RPB2) genes. Colony characteristics were documented on eight cultivation media, growth parameters at three incubation temperatures were recorded and micromorphology was examined using light microscopy as well as scanning electron microscopy to illustrate and characterize each species. Many specific extrolites were extracted and identified from cultures, including echinulins, epiheveadrides, auroglaucins and anthraquinone bisanthrons, and to be consistent in strains of nearly all species. Other extrolites are species-specific, and thus valuable for identification. Several extrolites show antioxidant effects, which may be nutritionally beneficial in food and beverages. Important mycotoxins in the strict sense, such as sterigmatocystin, aflatoxins, ochratoxins, citrinin were not detected despite previous reports on their production in this section. Adopting a polyphasic approach, 31 species are recognized, including nine new species. ITS is highly conserved in this section and does not distinguish species. All species can be differentiated using CaM or RPB2 sequences. For BenA, Aspergillus brunneus and A. niveoglaucus share identical sequences. Ascospores and conidia morphology, growth rates at different temperatures are most useful characters for phenotypic species identification.

• Klíčová slova
• A. aurantiacoflavus Hubka, A.J. Chen, Jurjević & Samson, A. caperatus A.J. Chen, Frisvad & Samson, A. endophyticus Hubka, A.J. Chen, & Samson, A. levisporus Hubka, A.J. Chen, Jurjević & Samson, A. porosus A.J. Chen, Frisvad & Samson, A. tamarindosoli A.J. Chen, Frisvad & Samson, A. teporis A.J. Chen, Frisvad & Samson, A. zutongqii A.J. Chen, Frisvad & Samson, Ascomycota, Aspergillaceae, Aspergillus aerius A.J. Chen, Frisvad & Samson, Aspergillus proliferans, Eurotiales, Eurotium amstelodami, Extrolites, Multi-gene phylogeny,
• Publikační typ
• časopisecké články MeSH