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Author: search.filters.author.Hyde, Kevin D.Subject: search.filters.subject.Phylogeny

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    Item type:Publication,
    Agaricus flocculosipes sp. nov., a new potentially cultivatable species from the palaeotropics
    (2012-01-01)
    Zhao, Rui Lin
    ;
    Hyde, Kevin D.
    ;
    Desjardin, Dennis E.
    ;
    Raspé, Olivier
    ;
    Soytong, Kasem
    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 μm 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. © 2012 The Mycological Society of Japan and Springer.
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    Advances in the phylogenesis of Agaricales and its higher ranks and strategies for establishing phylogenetic hypotheses
    (2008-10-15)
    Zhao, Rui Lin
    ;
    Desjardin, Dennis E.
    ;
    Soytong, Kasem
    ;
    Hyde, Kevin D.
    We present an overview of previous research results on the molecular phylogenetic analyses in Agaricales and its higher ranks (Agaricomycetes/ Agaricomycotina/Basidiomycota) along with the most recent treatments of taxonomic systems in these taxa. Establishing phylogenetic hypotheses using DNA sequences, from which an understanding of the natural evolutionary relationships amongst clades may be derived, requires a robust dataset. It has been recognized that single-gene phylogenies may not truly represent organismal phylogenies, but the concordant phylogenetic genealogies from multiple-gene datasets can resolve this problem. The genes commonly used in mushroom phylogenetic research are summarized. © Zhejiang University and Springer-Verlag GmbH 2008.