Agaricus flocculosipes sp. nov., a new potentially cultivatable species from the palaeotropics

Abstract

Agaricus flocculosipes is described as new from northern Thailand and Mayotte based on morphology and ITS sequence analysis. The new species is compared with similar taxa, and a comprehensive description, line drawings, and colored photographs are provided. Agaricus flocculosipes is distinguished among the species in section Arvenses by its relatively large sporocarps (110-180 mm in diameter), erect floccose squamules on the surface of the stipe, and relatively small basidiospores (less than 6.5 lm long). Phylogenetic analyses based on ITS sequence data using maximum likelihood, parsimony, and Bayesian analyses all support A. flocculosipes as being a distinct species within section Arvenses. The new taxon is potentially cultivatable as it is presumably heterothallic, exhibits extensive genetic diversity, and occurs in section Arvenses, a lineage that contains other edible cultivatable taxa such as Agaricus arvensis and Agaricus subrufescens.

Edible species of Agaricus (Agaricaceae) from Xinjiang Province (Western China)

“…Several potentially new sections were revealed by phylogenetic analysis of ITS sequence data (Zhao et al 2011), but they comprised exclusively tropical and some subtropical species. There have been several recent studies on Agaricus with several new species reported from Australia, China and Thailand (Chen et al 2012Karunarathna et al 2014;Lebel 2013;Gui et al 2015;Lebel & Syme 2012;Li et al 2014;Thongklang et al 2014;Zhao et al 2012Zhao et al , 2013.…”

Development of polymorphic microsatellite markers issued from pyrosequencing technology for the medicinal mushroom Agaricus subrufescens

“…Further experiments on additional strains of each species are needed to assess polymorphism at these transferable loci. The percentage of SubSSR markers that were successfully amplified (Table ) is consistent with the degree of phylogenetic relatedness previously described for these species (Zhao et al ., , ). Thus, the more closely related the species was to A. subrufescens, the higher the percentage of SubSSR markers that gave successful amplification.…”

Molecular Characterization of Wild Senegalese Voucher Belonging to the Agaricus, Ganoderma and Termitomyces Genera: Evidences of New Species Phylogenetically Distant From Described Ones

“…The third Agaricus voucher ICS031 ranges in an out-group position of all the other 39 Agaricus species of our analysis and could be related to the genus Hymenagaricus, close related to the Agaricus genus. All these strains were separated of others species of Agaricus like that strain (thoen7297) of Agaricus collected in Dakar market by Thoen in 2010 17 . Finally, the phylogenetic analysis of the three Agaricus related vouchers collected in Senegal are in favour of three new species, two (ICS 032 and ICS002) belonging to different section of the Agaricus genus and one (ICS031) belonging to a genus different but close related to the Agaricus one such as the Hymenoagaricus.…”