April 21, 2020  |  

Megaphylogeny resolves global patterns of mushroom evolution.

Authors: Varga, Torda and Krizsán, Krisztina and Földi, Csenge and Dima, Bálint and Sánchez-García, Marisol and Sánchez-Ramírez, Santiago and Szöllosi, Gergely J and Szarkándi, János G and Papp, Viktor and Albert, László and Andreopoulos, William and Angelini, Claudio and Antonín, Vladimír and Barry, Kerrie W and Bougher, Neale L and Buchanan, Peter and Buyck, Bart and Bense, Viktória and Catcheside, Pam and Chovatia, Mansi and Cooper, Jerry and Dämon, Wolfgang and Desjardin, Dennis and Finy, Péter and Geml, József and Haridas, Sajeet and Hughes, Karen and Justo, Alfredo and Karasinski, Dariusz and Kautmanova, Ivona and Kiss, Brigitta and Kocsubé, Sándor and Kotiranta, Heikki and LaButti, Kurt M and Lechner, Bernardo E and Liimatainen, Kare and Lipzen, Anna and Lukács, Zoltán and Mihaltcheva, Sirma and Morgado, Louis N and Niskanen, Tuula and Noordeloos, Machiel E and Ohm, Robin A and Ortiz-Santana, Beatriz and Ovrebo, Clark and Rácz, Nikolett and Riley, Robert and Savchenko, Anton and Shiryaev, Anton and Soop, Karl and Spirin, Viacheslav and Szebenyi, Csilla and Tomšovský, Michal and Tulloss, Rodham E and Uehling, Jessie and Grigoriev, Igor V and Vágvölgyi, Csaba and Papp, Tamás and Martin, Francis M and Miettinen, Otto and Hibbett, David S and Nagy, László G

Mushroom-forming fungi (Agaricomycetes) have the greatest morphological diversity and complexity of any group of fungi. They have radiated into most niches and fulfil diverse roles in the ecosystem, including wood decomposers, pathogens or mycorrhizal mutualists. Despite the importance of mushroom-forming fungi, large-scale patterns of their evolutionary history are poorly known, in part due to the lack of a comprehensive and dated molecular phylogeny. Here, using multigene and genome-based data, we assemble a 5,284-species phylogenetic tree and infer ages and broad patterns of speciation/extinction and morphological innovation in mushroom-forming fungi. Agaricomycetes started a rapid class-wide radiation in the Jurassic, coinciding with the spread of (sub)tropical coniferous forests and a warming climate. A possible mass extinction, several clade-specific adaptive radiations and morphological diversification of fruiting bodies followed during the Cretaceous and the Paleogene, convergently giving rise to the classic toadstool morphology, with a cap, stalk and gills (pileate-stipitate morphology). This morphology is associated with increased rates of lineage diversification, suggesting it represents a key innovation in the evolution of mushroom-forming fungi. The increase in mushroom diversity started during the Mesozoic-Cenozoic radiation event, an era of humid climate when terrestrial communities dominated by gymnosperms and reptiles were also expanding.

Journal: Nature ecology & evolution
DOI: 10.1038/s41559-019-0834-1
Year: 2019

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