<i>Eoscyphella luciurceolata</i> gen. and sp. nov. (Agaricomycetes) Shed Light on Cyphellopsidaceae with a New Lineage of Bioluminescent Fungi
2023
Alexandre G. S. Silva-Filho | Andgelo Mombert | Cristiano C. Nascimento | Bianca B. Nóbrega | Douglas M. M. Soares | Ana G. S. Martins | Adão H. R. Domingos | Isaias Santos | Olavo H. P. Della-Torre | Brian A. Perry | Dennis E. Desjardin | Cassius V. Stevani | Nelson Menolli
During nocturnal field expeditions in the Brazilian Atlantic Rainforest, an unexpected bioluminescent fungus with reduced form was found. Based on morphological data, the taxon was first identified as belonging to the cyphelloid genus <i>Maireina</i>, but in our phylogenetic analyses, <i>Maireina</i> was recovered and confirmed as a paraphyletic group related to genera <i>Merismodes</i> and <i>Cyphellopsis</i>. <i>Maireina filipendula</i>, <i>Ma. monacha</i>, and <i>Ma. subsphaerospora</i> are herein transferred to <i>Merismodes</i>. Based upon morphological and molecular characters, the bioluminescent cyphelloid taxon is described as the new genus <i>Eoscyphella</i>, characterized by a vasiform to urceolate basidiomata, subglobose to broadly ellipsoid basidiospores, being pigmented, weakly to densely encrusted external hyphae, regularly bi-spored basidia, unclamped hyphae, and an absence of both conspicuous long external hairs and hymenial cystidia. Phylogenetic analyses based on ITS rDNA and LSU rDNA support the proposal of the new genus and confirm its position in Cyphellopsidaceae. <i>Eoscyphella luciurceolata</i> represents a new lineage of bioluminescent basidiomycetes with reduced forms.
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