Fruiting body form, not nutritional mode, is the major driver of diversification in mushroom-forming fungi

With ∼36,000 described species, Agaricomycetes are among the most successful groups of Fungi. Agaricomycetes display great diversity in fruiting body forms and nutritional modes. Most have pileate-stipitate fruiting bodies (with a cap and stalk), but the group also contains crust-like resupinate fungi, polypores, coral fungi, and gasteroid forms (e.g., puffballs and stinkhorns). Some Agaricomycetes enter into ectomycorrhizal symbioses with plants, while others are decayers (saprotrophs) or pathogens. We constructed a megaphylogeny of 8,400 species and used it to test the following five hypotheses regarding the evolution of morphological and ecological traits in Agaricomycetes and their impact on diversification: 1) resupinate forms are plesiomorphic, 2) pileate-stipitate forms promote diversification, 3) the evolution of gasteroid forms is irreversible, 4) the ectomycorrhizal (ECM) symbiosis promotes diversification, and 5) the evolution of ECM symbiosis is irreversible. The ancestor of Agaricomycetes was a saprotroph with a resupinate fruiting body. There have been 462 transitions in the examined morphologies, including 123 origins of gasteroid forms. Reversals of gasteroid forms are highly unlikely but cannot be rejected. Pileate-stipitate forms are correlated with elevated diversification rates, suggesting that this morphological trait is a key to the success of Agaricomycetes. ECM symbioses have evolved 36 times in Agaricomycetes, with several transformations to parasitism. Across the entire 8,400-species phylogeny, diversification rates of ectomycorrhizal lineages are no greater than those of saprotrophic lineages. However, some ECM lineages have elevated diversification rates compared to their non-ECM sister clades, suggesting that the evolution of symbioses may act as a key innovation at local phylogenetic scales.

Revisiting Ramaria species: the Coral Fungi as Food and Pharmaceuticals

With the advancement of the quality of life and the resultant increase in the frequency of life-threatening diseases, food is being viewed as a source of nutritional and functional benefits. Mushrooms have served as nutritious food from time immemorial along with useful medicinal properties. The genus Ramaria, coral fungi, is a potential group of culinarily acclaimed mushrooms with worldwide distribution. During the past two decades, studies on several species of the genus revealed high medicinal potency. In this review, we particularly aim to update this group's present status with respect to its importance as food and medicine, which will offer a new perception to researchers for its progress from dietary food to functional food.

Phaeoclavulina pseudozippelii sp. nov. (Gomphales, Basidiomycota) from Northern Thailand

Coral fungi in Phu Hin Rong Kla National Park, Thailand, were surveyed from June to September of 2011 and 2012. A novel species, Phaeoclavulina pseudozippelii is described together with illustrations, photographs, and a comparison with phenetically similar taxa. Its taxonomic position was confirmed through phylogenetic analyses of the large subunit and internal transcribed spacer (ITS1-5.8S-ITS2) ribosomal DNA sequences.