Squamanita umbonata (Fungi, Agaricales, Tricholomataceae), primer registro en México

Cortés-Pérez, Alonso; Guzmán, Gastón; Ramírez-Guillén, Florencia

doi:10.21829/abm108.2014.202

Cited by 2 publications

(2 citation statements)

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“…13 ) was published as S. umbonata by Bas ( 1965 ). However, Cortés-Pérez et al ( 2014 ) showed that the upper parts of the cystidia in this collection were slightly to moderately thick-walled, which is consistent with our observations of the collection. Phylogenetically C. Bas 3808 forms a monophyletic branch with DAOM 199323 [GenBank accession no.…”

Section: Discussionsupporting

confidence: 93%

“…: MW258872 and MW258873). Squamanita umbonata is also reported from Japan (Ikeda 1996 ), Italy (Vizzini and Girlanda 1997 ), and Mexico (Cortés-Pérez et al 2014 ). Further efforts are necessary to reveal the species diversity of “ S. umbonata ” globally and delimit the constituent species, including a clear application of the name S. umbonata .…”

Section: Discussionmentioning

confidence: 96%

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Squamanitaceae and three new species of Squamanita parasitic on Amanita basidiomes

Liu

Horak³

et al. 2021

IMA Fungus

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The systematic position of the enigmatically mycoparasitic genus Squamanita (Agaricales, Basidiomycota) together with Cystoderma, Phaeolepiota, Floccularia, and Leucopholiota is largely unknown. Recently they were recognized as Squamanitaceae, but previous studies used few DNA markers from a restricted sample of taxa from the family and lacked a formal taxonomic treatment. In this study, with newly generated sequences of the type of the genus Squamanita, S. schreieri, and several additional species of the family, the phylogeny is reinvestigated with a concatenated (18S-5.8S-nrLSU-RPB2-TEF1-α) dataset. This study reveals that Cystoderma, Phaeolepiota, Squamanita, Floccularia, and Leucopholiota are a monophyletic clade with strong statistical support in Bayesian analysis and form Squamanitaceae. Phaeolepiota nested within Cystoderma; Squamanita, Leucopholiota, and Floccularia clustered together as two monophyletic subclades; and Squamanita was present as a monophyletic clade with strong statistical support in both Maximum Likelihood and Bayesian analyses. The family name Squamanitaceae is formally emended and a detailed taxonomic treatment is presented to accommodate the five genera. Meanwhile, another concatenated (18S-ITS-nrLSU-RPB2-TEF1-α) dataset is used to investigate phylogenetic relationships and species delimitation in Squamanita. Our data indicates that “S. umbonata” from the Northern hemisphere forms two species complexes, one complex includes six specimens from North America, Europe, and East Asia, the other includes two specimens from Central America and North America respectively. Futhermore, species of Squamanita can parasitize species of Amanita, besides other fungal species. Squamanita mira parasitizes A. kitamagotake (A. sect. Caesareae), while S. orientalis and S. sororcula are parasites of species belonging to the A. sepiacea complex (A. sect. Validae). “Squamanita umbonata” from Italy occurs on A. excelsa (A. sect. Validae). Three new species of Squamanita from East Asia, viz. S. mira, S. orientalis and S. sororcula are documented with morphological, multi-gene phylogenetic, and ecological data, along with line drawings and photographs, and compared with similar species. A key for identification of the global Squamanita species is provided.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 96%