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Multiple origins of sequestrate fungi related to cortinarius (cortinariaceae) / Ursula Peintner in American Journal of Botany, 88 (12) (2001) 

Public Citation [article]  inAmerican Journal of Botany > 88 (12) (2001) . - 2168–2179 Titre : Multiple origins of sequestrate fungi related to cortinarius (cortinariaceae) Type de document : Imprimé Auteurs : Ursula Peintner ; Neale Bougher ; Michael Castellano ; Jean-Marc Moncalvo ; Meinhard Moser (1924-2002) ; James M. Trappe ; Rytas Vilgalys Année de publication : 2001 Article en page(s) : 2168–2179 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Champignons [CBNPMP-Thématique] Phylogénie (liens existant entre espèces apparentées) Mots-clés : Cortinarius  Descomyces  Descolea  Hymenogaster  Protoglossum  Thaxterogaster  Quadrispora Résumé : The aim of the present study was to investigate the phylogeny and evolution of sequestrate fungi (with gastroid or partially exposed basidiomes) in relation to their gilled relatives from the Cortinariaceae (Basidiomycetes). Phylogenetic analyses of 151 ITS sequences from 77 gilled species and 37 sequestrate taxa were performed using maximum parsimony and maximum likelihood methods. Results show that sequestrate basidiome forms occur in all three major ectomycorrhizal lineages of Cortinariaceae: the clades Cortinarius, Hebeloma/Hymenogaster/Naucoria, and Descolea. However, these forms do not appear within the saprobic outgroup Gymnopilus, indicating multiple origins of sequestrate forms from ectomycorrhizal ancestors. Additionally, within the Cortinarius clade sequestrate forms have multiple origins: emergent Cortinarius spp., Thaxterogaster, Quadrispora, Protoglossum, and two Hymenogaster spp. (H. remyi, H. sublilacinus) share common ancestors with Cortinarius spp., but these sequestrate genera are not closely related to each other (with exception of Thaxterogaster and Quadrispora). Hymenogaster sensu stricto, Setchelliogaster, and Descomyces were placed in the two other major clades. Thus, sequestrate taxa evolved independently many times within brown-spored Agaricales. Furthermore, emergent, secotioid, and gastroid forms have evolved independently from each other, and so are not necessarily intermediate forms. After their establishment, these apparently morphologically stable taxa show a tendency to radiate. Lien pérenne : DOI : 10.2307/3558378 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=138983 Peintner, Ursula, Bougher, Neale, Castellano, Michael, Moncalvo, Jean-Marc, Moser, Meinhard (1924-2002), Trappe, James M., Vilgalys, Rytas 2001 Multiple origins of sequestrate fungi related to cortinarius (cortinariaceae). American Journal of Botany, 88(12): 2168–2179.

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The crepidotaceae (basidiomycota, agaricales): phylogeny and taxonomy of the genera and revision of the family based on molecular evidence / M .Catherine Aime in American Journal of Botany, 92 (1) (2005) 

Public Citation [article]  inAmerican Journal of Botany > 92 (1) (2005) . - 74–82 Titre : The crepidotaceae (basidiomycota, agaricales): phylogeny and taxonomy of the genera and revision of the family based on molecular evidence Type de document : Imprimé Auteurs : M .Catherine Aime ; Rytas Vilgalys ; Orson K. Miller Année de publication : 2005 Article en page(s) : 74–82 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Champignons Mots-clés : Crepidotus  Melanomphalia  Pleurotellus  Simocybe  Tubaria Résumé : Advances in phylogenetic systematics have clarified the position of most major homobasidiomycete lineages. In contrast, the status of the Crepidotaceae, a historically controversial family of dark-spored agarics, remains unaddressed. In this paper, current morphology-based classifications of the agaric genera of the Crepidotaceae were evaluated by parsimony and constraint analyses of sequence data from the nuclear large subunit rDNA. Taxa analyzed included the type species for each agaric genus allied in the family by Singer: Crepidotus, Simocybe, Pleurotellus, Tubaria, and Melanomphalia. Contrary to traditional classifications, results suggest that the crepidotoid fungi have three separate origins within the euagarics. The Crepidotaceae sensu stricto (s.s.) includes Crepidotus and Simocybe and represents a separate lineage of dark-spored euagarics. Pleurotellus is congeneric with Crepidotus. Results indicate the exclusion of both Tubaria and Melanomphalia from the Crepidotaceae s.s. Tubaria is allied with the strophariaceous taxa Phaeomarasmius and Flammulaster, while Melanomphalia has arisen from within a lineage of light-spored omphalinoid euagarics representing an independent acquisition of basidiospore pigmentation. Other pleisiomorphic and newly uncovered synapomorphic characters are discussed in detail along with the taxonomic status of each genus, and a revised family description is provided. Lien pérenne : DOI : 10.3732/ajb.92.1.74 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=138997 Aime, M .Catherine, Vilgalys, Rytas, Miller, Orson K. 2005 The crepidotaceae (basidiomycota, agaricales): phylogeny and taxonomy of the genera and revision of the family based on molecular evidence. American Journal of Botany, 92(1): 74–82.

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Consultable article (2005) URL