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Ramaria species in Nothofagus forests of Patagonia, with the description of two new species

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Abstract

Within the wide diversity of fungal species of the Patagonian Andes forests, species of Ramaria sensu lato are some of the most attractive, due to their coral-like, medium size, and colorful basidiomata. The genus was recognized as paraphyletic and is currently divided into four subgenera: Ramaria, Laeticolora, Lentoramaria, and Echinoramaria. In Patagonia (Argentina and Chile), 18 species of Ramaria have been reported associated with Nothofagaceae; however, their diversity and phylogenetic relationships are largely unknown. This study presents a detailed account of Ramaria in Patagonia, based on an integrative analysis of phylogenetic, macro-, and micro-morphological features. Internal transcribed spacer (ITS) and nuclear 28S rDNA (LSU) genes were analyzed to identify specimens from Argentina and to examine their phylogenetic relationships with other Ramaria species. The phylogenetic analyses revealed six Ramaria species in Argentinian Patagonia: R. patagonica, R. botrytis, R. inedulis, R. paraconcolor, and two new phylogenetic groups that are proposed as new species: R. flavinedulis and R. dendrophora. Ramaria flavinedulis produces brightly colored yellow or yellow-orange basidiomata with a fused, twisted compound stipe, simple-septate basidia, and ellipsoid to cylindrical basidiospores. Ramaria dendrophora exhibits pale yellow to pale pink basidiomata and ornamented basidiospores with conspicuous and irregular warts. This study increased our knowledge of the phylogenetic diversity and taxonomy in Ramaria from the Patagonian Andes Forests compared with those found elsewhere.

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Acknowledgements

Authors thank Dr. Kerry Everett from The New Zealand Institute for Plant and Food Research Limited for her valuable feedback on the manuscript. We express our gratitude to BAFC and LPS herbaria and their curators for the loan of specimens. Field assistance to the first author rendered by Maximiliano Rugolo and Masera Pablo is duly acknowledged. This study is part of the Patagonia Fungi trails and tastes project.

Funding

The research is supported by the COFECyT, P-BIO R 2016 (to BC and MBP), PICT 2018–3234 (to MBP), and PIP 11220200101167CO01 (to MBP).

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Authors and Affiliations

  1. Consejo Nacional Investigaciones Científicas Y Técnicas, Buenos Aires, Argentina

    Gabriela C. González, Carolina Barroetaveña, Mario Rajchenberg & María Belén Pildain

  2. Centro de Investigación y Extensión Forestal Andino Patagónico, C.C. 14, 9200, Esquel, Chubut, Argentina

    Gabriela C. González, Carolina Barroetaveña, Mario Rajchenberg & María Belén Pildain

  3. Universidad Nacional de La Patagonia SJB, Esquel, Chubut, Argentina

    Carolina Barroetaveña, Mario Rajchenberg & María Belén Pildain

  4. The New Zealand Institute for Plant and Food Research Limited, Christchurch, New Zealand

    Sandra B. Visnovsky

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  1. Gabriela C. González
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  2. Carolina Barroetaveña
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  3. Sandra B. Visnovsky
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  4. Mario Rajchenberg
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  5. María Belén Pildain
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Contributions

Conceptualization: Gabriela González, Carolina Barroetaveña, and Maria Belén Pildain; methodology: Gabriela González, Carolina Barroetaveña, and Maria Belén Pildain; formal analysis and investigation: Gabriela González; writing—original draft preparation: Gabriela González; writing—review and editing: Carolina Barroetaveña, Mario Rajchenberg, and Maria Belén Pildain; funding acquisition: Carolina Barroetaveña and Maria Belén Pildain; resources: Carolina Barroetaveña, Sandra B. Visnovsky, and Maria Belén Pildain; supervision: Carolina Barroetaveña, Mario Rajchenberg, and Maria Belén Pildain.

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Correspondence to Carolina Barroetaveña.

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González, G.C., Barroetaveña, C., Visnovsky, S.B. et al. Ramaria species in Nothofagus forests of Patagonia, with the description of two new species. Mycol Progress 22, 60 (2023). https://doi.org/10.1007/s11557-023-01905-5

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