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A multigene phylogeny of Umbellidion revealed a novel lineage in Leotiomycetes

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Abstract

The monotypic genus Umbellidion remains as an incertae sedis in Pezizomycotina. This saprotrophic anamorphic fungus is morphologically distinct and unique, occurring widely in Brazil on several hosts, with only one record in the Caribbean region. During the project “Microfungi from Brazil: looking for new species,” five strains of U. radulans were obtained from decaying leaves of Eucalyptus spp., in the Floresta Estadual Edmundo Navarro de Andrade (FEENA), Rio Claro, São Paulo state, Brazil, and were studied based on their morphology and phylogeny. In this study, we conducted a multigene phylogenetic analysis based on ITS, LSU, SSU, TEF1, and RPB2 sequences of 78 related taxa of Leotiomycetes. Phylogenetic inference showed that strains of Umbellidion form a unique, statistically supported lineage near the base of the Leotiomycetes. Accordingly, a new taxonomic order and family Umbellidiales and Umbellidiaceae were established to classify U. radulans. In addition, U. radulans is epitypified based on a new specimen collected from a Eucalyptus grandis plantation in Brazil.

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DNA sequences are available in GenBank and alignments were deposited on Figshare.

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Acknowledgements

The authors thank the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior — Brazil (CAPES, Finance Code 001) for support, and the Programa de Pós-Graduação em Botânica — PPGBOT. The authors also thank Ministério do Meio Ambiente (MMA)/Instituto Chico Mendes de Conservação da Biodiversidade da Biodiversidade (ICMBio) that authorize the expeditions (authorization number: 69462-1), and Instituto Florestal (IF — Governo de São Paulo/Secretaria de Infraestrutura e Meio Ambiente) (authorization number 260108 -004.219/2019). This paper is part of the PhD thesis of the first author.

Funding

This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior — Brazil (CAPES, Finance Code 001) and the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq — Proc. 131503/2019-7; Proc. 312984/2018-9).

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Contributions

G. G. B: formal analysis, investigation, data curation, writing (original draft, review, and editing); J. D. P. B.; D. H. C. de R.: conceptualization and writing; and L.F.P.G.: conceptualization, supervision, project administration, funding acquisition, writing.

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Correspondence to Luis F. P. Gusmão.

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The collection was authorized by the Ministério do Meio Ambiente (MMA)/Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio) (SISBIO number 69462-1) and by Governo de São Paulo/Secretaria de Infraestrutura e Meio Ambiente (authorization number 260108 -004.219/2019).

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The authors declare no competing interests.

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Section Editor: Hans-Josef Schroers

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Barreto, G.G., Bezerra, J.D.P., Costa-Rezende, D.H. et al. A multigene phylogeny of Umbellidion revealed a novel lineage in Leotiomycetes. Mycol Progress 22, 48 (2023). https://doi.org/10.1007/s11557-023-01896-3

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  • DOI: https://doi.org/10.1007/s11557-023-01896-3

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