Mycologia最新文献

{"title":"<i>Piromyces struthionis</i>, sp. nov., a new anaerobic gut fungus from the feces of ostriches.","authors":"Kathryn Nash, Julia Vinzelj, Carrie J Pratt, Mostafa S Elshahed, Noha H Youssef","doi":"10.1080/00275514.2025.2549866","DOIUrl":"https://doi.org/10.1080/00275514.2025.2549866","url":null,"abstract":"<p><p>Anaerobic gut fungi (AGF; <i>Neocallimastigomycota</i>) are a clade of basal, zoospore-producing fungi within the subkingdom Chytridiomyceta and known inhabitants of the alimentary tract of animal hosts. To date, 22 genera and 38 species have been described, most originating from herbivorous mammals. Here, we report on the isolation and characterization of a novel species of <i>Neocallimastigomycota</i> from an avian host. Multiple AGF strains were isolated from ostrich feces obtained from a local farm in Oklahoma (USA). All strains formed small, irregular-shaped white colonies with darker centers, displayed a filamentous rhizoidal structure with monocentric thallus developmental patterns, and produced mostly monoflagellated zoospores. The type strain produced terminal sporangia that were predominantly globose, often exhibiting cup-shaped and occasionally elongated sporangiophores. Sporangiophores characteristically exhibited constrictions at irregular intervals, giving them a beads-on-a-string-like appearance. Phylogenetic analysis using the partial nuc 28S rDNA D1-D2 regions (D1-D2 28S), ribosomal internal transcribed spacer 1 (ITS1), and RNA polymerase II large subunit (RPB1) grouped all isolates as a separate species within the genus <i>Piromyces</i>. Transcriptomic analysis indicated an average amino acid identity (AAI) of 80.34% (± 3.27%) between the type species and members of the genus <i>Piromyces</i> and 62.93-76.05% between the type species and all other AGF taxa outside <i>Piromyces</i>. Based on the morphology, phylogenetic analysis, and AAI values, we propose accommodating these strains as a novel species of <i>Piromyces</i>, for which the name <i>Piromyces struthionis</i> is proposed. The type strain for this species is Ost1.</p>","PeriodicalId":18779,"journal":{"name":"Mycologia","volume":" ","pages":"1-13"},"PeriodicalIF":2.6,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145275349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two morphologically distinct formae speciales in <i>Neonectria magnoliae</i> differ in their virulence on Magnolia family hosts <i>Liriodendron tulipifera</i> and <i>Magnolia fraseri</i>.","authors":"Hannah M Petronek, Shannon C Lynch, Brian Lovett, Angie M Martin, Danielle K H Martin, Matt T Kasson","doi":"10.1080/00275514.2025.2548745","DOIUrl":"https://doi.org/10.1080/00275514.2025.2548745","url":null,"abstract":"<p><p>The family Nectriaceae includes numerous phytopathogenic fungal genera that cause canker diseases on both angiosperm and conifer hosts worldwide. Among these, <i>Neonectria</i> species are globally important canker pathogens of numerous plant hosts, but their roles in contributing to forest decline and mortality outside their involvement in beech bark disease and apple canker are largely understudied. In the U.S.A. <i>N. magnoliae</i> causes perennial cankers on two native hosts in central Appalachia: <i>Liriodendron tulipifera</i> (tulip poplar) and <i>Magnolia fraseri</i> (Fraser magnolia) and has been recently confirmed from non-native <i>M. stellata</i> (star magnolia) in West Virginia, U.S.A. Both native hosts occur in the central Appalachian Mountains, but <i>M. fraseri</i> occurs mostly at higher elevations, from 600 to 1700 m. <i>Neonectria magnoliae</i> was first described in 1943 (as <i>Nectria magnoliae</i>), yet its impact across the forested landscape remains unclear. To clarify host-specific differences across the contemporary range of <i>N. magnoliae</i>, we used multilocus phylogenetics, comparative pathogenicity/virulence assays, and morphological analyses to determine whether <i>N. magnoliae</i> represents two cryptic species that specialize on <i>L. tulipifera</i> and <i>Magnolia</i> spp. or whether <i>N. magnoliae</i> has host-specific pathotypes. Our studies revealed two morphologically distinct formae speciales within <i>N. magnoliae</i>: (i) <i>N. magnoliae</i> f. sp. <i>liriodendri</i>-strains originating from <i>L. tulipifera</i> with increased virulence on <i>L. tulipifera</i> and lacking macroconidia production and (ii) <i>N. magnoliae</i> f. sp. <i>magnoliae</i>-strains originating from <i>M. fraseri</i> with increased virulence on <i>M. fraseri</i> and producing macroconidia readily in culture. Overall, the incidence of these two pathotypes indicates that neither pathotype poses serious risks to either plant host but can add to cumulative stresses that both tree species are experiencing in the face of shifting global weather patterns.</p>","PeriodicalId":18779,"journal":{"name":"Mycologia","volume":" ","pages":"1-16"},"PeriodicalIF":2.6,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145244723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Panaeolus oligotrophus</i>: A new species from central Florida, with notes on <i>Panaeolus pumilus</i> and <i>Crucispora rhombisperma</i>.","authors":"Scott Ostuni, Pietro Voto, Joshua Birkebak, Matthew G E Meyer, Zachery Geurin, Jason C Slot","doi":"10.1080/00275514.2025.2552612","DOIUrl":"https://doi.org/10.1080/00275514.2025.2552612","url":null,"abstract":"<p><p><i>Panaeolus oligotrophus</i> sp. nov., a species macromorphologically resembling <i>Panaeolus cinctulus</i>, was collected in central Florida. Its macro- and micromorphological features are described and compared with all other known <i>Panaeolus</i> species. Color photos of the fruiting bodies and micrographs of key microscopic features are provided, along with an updated phylogenetic analysis. A microscopic reexamination of the holotype of <i>Panaeolus pumilus</i> supports its synonymy with <i>P. cinctulus</i>. The potential for psilocybin production by <i>P. oligotrophus</i> was determined by the characterization of the psilocybin gene cluster through whole genome sequencing. Phylogenetic and morphological evidence also supports the placement of <i>Crucispora rhombisperma</i> within <i>Panaeolus</i>, for which the new combination <i>Panaeolus rhombispermus</i> is proposed. This paper makes two interesting additions to the genus <i>Panaeolus: P. rhombispermus</i> introduces the novelty of an extremely differentiated spore morphology, and <i>Panaeolus oligotrophus</i> provides a rare example of <i>Panaeolus</i> in the underexplored niche of oligonutritive sandy soil.</p>","PeriodicalId":18779,"journal":{"name":"Mycologia","volume":" ","pages":"1-10"},"PeriodicalIF":2.6,"publicationDate":"2025-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145244733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epitypification of <i>Armillaria solidipes</i>, a cause of Armillaria root disease in North America.","authors":"Vladimír Antonín, Ada J Fitz Axen, Jorge R Ibarra Caballero, James J Worrall, Suzanne B Marchetti, Jane E Stewart, Ned B Klopfenstein, Mee-Sook Kim","doi":"10.1080/00275514.2025.2544251","DOIUrl":"https://doi.org/10.1080/00275514.2025.2544251","url":null,"abstract":"<p><p>Although <i>Armillaria solidipes</i> was described in 1900, confusion has surrounded the appropriate use of this taxonomic epithet, largely because DNA sequence-based characterization and an associated culture were unavailable for the original holotype. An epitype for <i>A. solidipes</i> (previously known as North American Biological Species I) is established herein, along with morphological descriptions and genetic characterization that clearly distinguish <i>A. solidipes</i>, which is found in North America, from <i>A. ostoyae</i> (previously known as European Biological Species C), which is found in Eurasia. Of the five loci examined, translation elongation factor 1-alpha was the most useful for distinguishing <i>A. solidipes</i> from other <i>Armillaria</i> spp. including <i>A. ostoyae</i>. Further, the whole genome phylogeny of <i>A. solidipes</i> and <i>A. ostoyae</i> showed substantial differences that further demonstrate their separation. The specimen from Colorado, USA, which was collected in the locality where the original type specimen was collected, is designated as the epitype.</p>","PeriodicalId":18779,"journal":{"name":"Mycologia","volume":" ","pages":"1-11"},"PeriodicalIF":2.6,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145138112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphological, phylogenetic, and alkaloid profile analyses of a new <i>Epichloë</i> species symbiotic with <i>Elymus kamoji</i> in China.","authors":"Tian Wang, Taixiang Chen, Yuanyuan Jin, Longhai Xue, Chunjie Li","doi":"10.1080/00275514.2025.2543686","DOIUrl":"https://doi.org/10.1080/00275514.2025.2543686","url":null,"abstract":"<p><p>The aboveground endophytes of the genus <i>Epichloë</i> are notable for their mutualistic association with the Poaceae family, conferring benefits such as increased stress tolerance, competitiveness, and ecological dominance to host plants. Here, two endophytic fungal strains were isolated from <i>Elymus kamoji</i> in China, exhibiting morphological characteristics typical of <i>Epichloë</i> species. Phylogenetic analyses using maximum likelihood method on <i>tubB</i> and <i>tefA</i> gene sequences revealed that two strains from <i>Elymus kamoji</i> represent a novel <i>Epichloë</i> interspecific hybrid species. Allele 1 grouped within <i>Epichloë bromicola</i>, whereas allele 2 grouped within <i>Epichloë calamagrostidis</i>. We propose the name <i>Epichloë tibetica</i>, extending the diversity of <i>Epichloë</i> species known to colonize <i>Elymus kamoji</i>. Both isolates are mating type B (MTB), and no sexual structures or epiphyllous growth was observed on <i>Epichloë</i>-infected <i>El. kamoji</i>. DNA analysis revealed the absence of genes responsible for the biosynthesis of ergot alkaloids, indole-diterpenes, and 1-aminopyrrolizidines in both isolates. Regarding the pyrrolopyrazine synthetase A gene (<i>ppzA</i>) profiles, the hybrid <i>E. tibetica</i> was found to contain both the <i>ppzA</i> and <i>ppzA</i>-∆R alleles. The <i>ppzA</i>-∆R allele is characterized by large deletions spanning the <i>ppzA</i>-M and <i>ppzA</i>-T2 domains. Within an alternate <i>ppzA</i> allele, we have localized a region downstream of <i>ppzA</i>-A2 whose structural properties block amplification of the <i>ppzA</i>-A2 region using conserved domain-specific primers. These traits characteristics may position <i>E. tibetica</i> as a viable model for studying <i>ppzA</i> allele diversity. Our findings further highlight the necessity of employing diverse primer combinations to elucidate the profiles of alkaloid synthesis genes across hybrid <i>Epichloë</i> species.</p>","PeriodicalId":18779,"journal":{"name":"Mycologia","volume":" ","pages":"1-16"},"PeriodicalIF":2.6,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145131279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A revised circumscription of Marthamycetales based on a complete sampling of the types of genera, Propoliaceae, fam. nov., and placement of <i>Cryptomycina pteridis</i> in Leotiomycetes.","authors":"Jason M Karakehian, Andrew N Miller, Alison H Harrington","doi":"10.1080/00275514.2025.2516370","DOIUrl":"https://doi.org/10.1080/00275514.2025.2516370","url":null,"abstract":"<p><p>Marthamycetales species are widely distributed, non-lichenized, apothecial ascomycetes that are associated with various woody plants and grasses. Most species are presumed to be saprobes, although a few are pathogens. Apothecia are small and erumpent, with farinose discs that are encircled by ragged, projecting flaps of degraded plant tissue. Marthamycetales is placed in Leotiomycetes and currently circumscribes nine genera: <i>Cyclaneusma, Marthamyces, Mellitiosporiella, Mellitiosporium, Naemacyclus, Phragmiticola, Propolina, Propolis</i>, and <i>Ramomarthamyces</i>. However, because representative species of four genera have not been sampled in previous phylogenetic studies, the circumscription of the order and evolutionary relationships of taxa within it have remained unclear. In this contribution, we obtained a complete sampling of the types of all nine genera. We assembled a four-locus data set and performed maximum likelihood and Bayesian phylogenetic analyses. Our results are congruent with previous analyses: Marthamycetales is phylogenetically isolated within Leotiomycetes and is composed of two distinct, well-supported clades. One clade includes primarily filiform-spored, leaf-inhabiting species in Marthamycetaceae sensu stricto, whereas the second clade includes primarily cylindrical/elliptical-spored, woody tissue-inhabiting species. We name this latter clade Propoliaceae, fam. nov. Sequences of <i>Everhartia hymenuloides</i>, type of the genus, group within this Propoliaceae clade. <i>Phragmiticola</i> is excluded from Marthamycetales and placed in Arachnopezizaceae, Helotiales. <i>Propolina</i> is synonymized under <i>Propolis</i>, and the new combination <i>Propolis cervina</i> is proposed. Lectotypes are designated for <i>Propolina cervina</i> and <i>Pseudographis phragmitis</i>. A revised and expanded description of Marthamycetales is provided, along with diagnoses for Marthamycetaceae and Propoliaceae. <i>Cryptomycina pteridis</i> is placed in Leotiomycetes based on the first published sequences of this species. However, its ordinal-level phylogenetic relationships remain unknown. Our results provide a taxonomic framework for future studies in the diversity and ecology of Marthamycetales and a starting point for future work on the phylogenetic classification and global diversity of the genus <i>Cryptomycina</i>.</p>","PeriodicalId":18779,"journal":{"name":"Mycologia","volume":" ","pages":"1-50"},"PeriodicalIF":2.6,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145033716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evidence for extensive diversity in the pollen-parasitic genus <i>Retiarius</i> in western North America, including two new species associated with lichens.","authors":"Alejandro Huereca, Carmen C G Allen, R Troy McMullin, Antoine Simon, Arseniy Belosokhov, Toby Spribille","doi":"10.1080/00275514.2025.2513197","DOIUrl":"https://doi.org/10.1080/00275514.2025.2513197","url":null,"abstract":"<p><p>Understanding the diversity of microscopic hyphomycetes is an ongoing effort, and many species remain undescribed. While studying lichen organismal composition in western Canada, metagenomic data revealed the presence of an unknown species of <i>Retiarius</i> (<i>Orbiliaceae</i>, Ascomycota), a genus of pollen-parasitic fungus with no previous records in the region. We developed genus-specific primers to amplify <i>Retiarius</i> DNA in lichen and adjacent substrate extractions, successfully detecting multiple lineages of <i>Retiarius</i> across a wide geographic range within North America. We proceeded to screen accumulations of pollen on the undersurface of lichen thalli to isolate any pollen-associated fungi. Using dilution series and PCR for identification, we isolated two specifically distinct strains of <i>Retiarius</i> with morphology unlike any described member of the genus. Inclusion of DNA from these strains in a multilocus phylogeny using the internal transcribed spacer regions ITS1-5.8S-ITS2 (ITS), partial nuc 28S rDNA (28S), and nuc small subunit (18S) confirmed their evolutionarily distinct position in the genus. We describe these two species here as <i>Retiarius canadensis</i> and <i>R. crescentus</i>. The former possesses trinacrium-shaped conidia, similar to those of <i>R. bovicornutus</i> and <i>R. revayae</i> but morphometrically different, and the latter is distinguished by its canoe-shaped conidia, a morphological character heretofore unknown from <i>Retiarius</i>.</p>","PeriodicalId":18779,"journal":{"name":"Mycologia","volume":" ","pages":"1-27"},"PeriodicalIF":2.6,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145033693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Candida auris</i> adhesins, specifically Als3, a key target to understand and mitigate.","authors":"Yasmina Lashine, Rania Hamdy, Salam Dakalbab, Imene K Lazreg, Fatima Al Dhaheri, Sek Peng Chin, Najihah Mohd Hashim, Sameh S M Soliman","doi":"10.1080/00275514.2025.2536345","DOIUrl":"https://doi.org/10.1080/00275514.2025.2536345","url":null,"abstract":"<p><p>The emergence of <i>Candida auris</i>, a multidrug-resistant fungal pathogen with unique heterogenic characteristics and clades, raised significant concerns globally, particularly in healthcare settings. <i>C. auris</i> pathogenicity resides in its adaptability and resilience, with the ability to form robust biofilms and adhere to host tissues and medical devices. Adhesins, particularly Als3, primarily mediate these processes. This review explores the variations in expression, copy numbers, and genetic modifications of Als3 in relation to different clades and environmental conditions. Furthermore, the role of Als3 in adhesion, biofilm formation, and invasion is discussed, in addition to its contribution to immune evasion and fungal virulence. Expression profiles of Als3 and copy numbers play important roles in fungal heterogeneity, aggregation, and pathogenicity, with high expression and copy numbers imposing significant effects. Gene mutation, transcriptional and translational controls of Als3, in addition to three-dimensional structure in <i>C. auris</i>, are areas of limited information. The potential of targeting Als3 for therapeutic interventions is also reviewed, including approaches such as the use of <i>C. albicans</i> Als3 vaccine, antibodies, natural ligands, and others, although research in this area is still limited. Future research directions should include in-depth investigation of Als3 structural and molecular differences, in addition to the discovery of target drugs.</p>","PeriodicalId":18779,"journal":{"name":"Mycologia","volume":" ","pages":"1-16"},"PeriodicalIF":2.6,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145000965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New genera, species, combinations, and synonyms of saprobic Dothideomycetes and Sordariomycetes from subtropical Texas, USA.","authors":"Gregorio Delgado, Andrew N Miller, Pedro W Crous, Ondřej Koukol","doi":"10.1080/00275514.2025.2540233","DOIUrl":"https://doi.org/10.1080/00275514.2025.2540233","url":null,"abstract":"<p><p>As a result of long-term field work in subtropical Texas, USA, three novel genera and three new species are introduced in Pezizomycotina to accommodate new or previously described taxa lacking DNA sequence data. In the Dothideomycetes, <i>Piepenbringia</i>, gen. nov. is established for <i>Taeniolella multiplex</i> (Pleosporales incertae sedis) distant from the type species <i>T. exilis</i> in Kirschsteiniotheliales. <i>Ernakulamia americana</i>, sp. nov. (Tetraplosphaeriaceae, Pleosporales), collected on dead leaves of <i>Sabal minor</i> (Arecaceae), forms a distinct monophyletic lineage distant from representative strains of <i>E. cochinensis</i>, the type species. In the Sordariomycetes, <i>Pseudotaeniolella</i>, gen. nov. is introduced for <i>Taeniolella sabalicola</i> in Distoseptisporaceae (Distoseptisporales), also distant from <i>T. exilis</i> in the Dothideomycetes. <i>Parapenzigomyces ampelinus</i>, gen. et sp. nov. collected on dead stems of hanging vines, forms a strongly supported lineage in Xylariales distant from the type species of <i>Penzigomyces, P. nodipes</i>, in Chaetosphaeriales. A new combination in <i>Parapenzigomyces</i> is proposed for <i>P. flagellatus</i> after examination of ex-type material. <i>Sporidesmina</i> is expanded to accommodate <i>Stanjehughesia floridensis</i> and a few other stanjehughesia-like fungi that cluster together in a distinct lineage incertae sedis in Xylariales. They are distant from <i>St. hormiscioides</i>, the type species in Chaetosphaeriales; therefore, five new combinations in <i>Sporidesmina</i> are proposed. <i>Acrodictys holubovae</i>, sp. nov. (Acrodictyaceae, Sordariomycetes incertae sedis), collected on dead culms of <i>Arundinaria</i> sp. (Poaceae), is phylogenetically distant from other <i>Acrodictys</i> species having clavate or pyriform conidia with 3-4 transverse septa and distinct pores. The identity of <i>Solicorynespora foveolata</i> is revised due to its similarity to several <i>Distoseptispora</i> species. The new combination <i>D. foveolata</i> is proposed, and the name <i>D. bambusae</i> is reduced to its synonym. The genus is also expanded to include previously overlooked tretic conidiogenesis. <i>Pleopunctum ellipsoideum, D. euseptata</i>, and <i>D. meilingensis</i> are newly recorded from North America. Novel phylogenetic placements are provided for <i>Sporidesmium fragilissimum</i> and <i>Tubeufia berkeleyi</i>.</p>","PeriodicalId":18779,"journal":{"name":"Mycologia","volume":" ","pages":"1-44"},"PeriodicalIF":2.6,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145000979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Agaricus</i> section <i>Minores</i>: a new species to science, and six species recorded for the first time in Greece.","authors":"Savvas Christodoulou, Elias Polemis, Georgios Konstantinidis, Vassiliki Fryssouli, Philippe Callac, Georgios I Zervakis","doi":"10.1080/00275514.2025.2505834","DOIUrl":"10.1080/00275514.2025.2505834","url":null,"abstract":"<p><p><i>Agaricus</i> sect. <i>Minores</i> is characterized by the production of small to medium-sized basidiomata, high species diversity (including several cryptic taxa), and occurrence in a large variety of habitats. A new species to science, i.e. <i>Agaricus draconis</i>, is formally described by adopting an integrative approach based on morphological features, molecular criteria, and habitat characteristics. The multilocus phylogenetic analysis performed through the use of the internal transcribed spacer (ITS), the partial nuc 28S rDNA (28S), and the translation elongation factor 1-alpha (<i>TEF1-α</i>) gene clearly demonstrates that <i>A. draconis</i> is a sister species to <i>A. brunneolus</i> and <i>A. dulcidulus</i>. In addition, <i>A. draconis</i> exhibits distinct morphological features, including a predominantly white, smooth pileus with occasional tinges of gray, orange, violet, or yellowish colors lacking appressed scales and a single, solid rhizomorph at the stipe base. Furthermore, the presence of another 12 species of the <i>A</i>. sect. <i>Minores</i> was assessed in Greece, six of which constitute first national records, i.e. <i>A. edmondoi, A. gemlii, A. heinemannianus, A. jacobi, A. kerriganii</i>, and <i>A. marisae</i>. The most notable morphological features of these six species are presented, and their distribution in Mediterranean Europe is discussed.</p>","PeriodicalId":18779,"journal":{"name":"Mycologia","volume":" ","pages":"951-964"},"PeriodicalIF":2.6,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144333525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}