Deconstructing the Tricholomataceae (Agaricales) and introduction of the new genera Albomagister, Corneriella, Pogonoloma and Pseudotricholoma

The enormity of the breadth and depth of specimens held within the world's biological collections offers unparalleled opportunities to capture genomic data from across the entire range of known biological diversity. Such a task would take many lifetimes to complete if we could rely only on fresh samples. High‐throughput sequencing provides a technical solution to the long‐term problems of recalcitrant and degraded DNA typical of museum specimens, suggesting that we may be on the verge of a major collections‐based revolution. Although the potential is great, the feasibility of using preserved collections for large‐scale, taxonomically comprehensive phylogenomic studies remains unknown. In the present study, we demonstrate the continued relevance of fungarium collections in the genomic era by analyzing a genomic dataset composed of 39 genomes representing 26 family‐level clades, including 14 newly generated draft genomes derived from short‐read shotgun sequencing of preserved specimens, frozen and freeze‐dried material, representing most of the known families of Agaricales. We predicted homologues of 210 putative single copy genes in the newly generated draft genome assemblies, of which 208 were used for phylogenetic reconstruction. Our analyses resulted in a robust and, for the first time, fully supported phylogeny of the Agaricales, enabling the recognition of seven suborders and providing a resource for testing hypotheses of the evolution of mushrooms. Our analysis of optimal combinations of ranked genes using an information theory‐based method provides guidance on gene selection for future studies, enabling efficient application of high‐throughput sequencing techniques toward unlocking the potential of collections‐based research in the genomic era.

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“…(). At least 30 genera can be assigned to this suborder following a recent revision of the Tricholomataceae (Sánchez‐García et al ., ).…”

Section: Taxonomymentioning

confidence: 97%

Tales from the crypt: genome mining from fungarium specimens improves resolution of the mushroom tree of life

Dentinger

Gaya

O’Brien

et al. 2015

Biol. J. Linn. Soc.

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“…), which contains roughly 30 genera including ECM and non‐ECM groups (Sánchez‐García et al. ). If the ECM mode represents a key innovation, then we would expect to see an increase in diversification rate in clades with this trait compared to those that are non‐ECM.…”

mentioning

confidence: 99%

Is the switch to an ectomycorrhizal state an evolutionary key innovation in mushroom‐forming fungi? A case study in the Tricholomatineae (Agaricales)

Sánchez-García

Matheny

2016

Evolution

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Although fungi are one of the most diverse groups of organisms, little is known about the processes that shape their high taxonomic diversity. This study focuses on evolution of ectomycorrhizal (ECM) mushroom-forming fungi, symbiotic associates of many trees and shrubs, in the suborder Tricholomatineae of the Agaricales. We used the BiSSE model and BAMM to test the hypothesis that the ECM habit represents an evolutionary key innovation that allowed the colonization of new niches followed by an increase in diversification rate. Ancestral state reconstruction (ASR) supports the ancestor of the Tricholomatineae as non-ECM. We detected two diversification rate increases in the genus Tricholoma and the Rhodopolioid clade of the genus Entoloma. However, no increases in diversification were detected in the four other ECM clades of Tricholomatineae. We suggest that diversification of Tricholoma was not only due to the evolution of the ECM lifestyle, but also to the expansion and dominance of its main hosts and ability to associate with a variety of hosts. Diversification in the Rhodopolioid clade could be due to the unique combination of spore morphology and ECM habit. The spore morphology may represent an exaptation that aided spore dispersal and colonization. This is the first study to investigate rate shifts across a phylogeny that contains both non-ECM and ECM lineages.

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“…Las especies de Mycena también son estudiadas por su capacidad de producir luciferina, una proteína que genera bioluminiscencia (desjardin et al, 2010;Mori et al, 2011). En cuanto a tricholomataceae, Singer (1986) incluyó 98 géneros dentro de ella, y recientemente ha sido abordada por Sánchez-García et al (2014). Estos autores propusieron una reestructuración de la misma debido a su naturaleza polifilética, incluyendo dentro de tricholomataceae únicamente los géneros Tricholoma, Porpoloma, Corneriella, Pseudotricholoma, Pogonoloma, Dennisiomyces y Leucopaxillus para que sea de naturaleza monofilética.…”

Section: Familia Omphalotaceae Bresinsky 1985unclassified

garicoid fungi of Nothofagus pumilio forests (Chubut, Argentina): Dicotomic key and checklist

Romano

Greslebin

Lechner

2017

MACN

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Deconstructing the Tricholomataceae (Agaricales) and introduction of the new genera Albomagister, Corneriella, Pogonoloma and Pseudotricholoma

Cited by 53 publications

References 55 publications

Tales from the crypt: genome mining from fungarium specimens improves resolution of the mushroom tree of life

Tales from the crypt: genome mining from fungarium specimens improves resolution of the mushroom tree of life

Is the switch to an ectomycorrhizal state an evolutionary key innovation in mushroom‐forming fungi? A case study in the Tricholomatineae (Agaricales)

garicoid fungi of Nothofagus pumilio forests (Chubut, Argentina): Dicotomic key and checklist

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