Abstract
In this study, the taxonomic diversity of the Xylodon raduloides species complex (Hymenochaetales, Basidiomycota) is examined. Specimens were studied using an integrative taxonomic approach that includes molecular phylogenetic and morphological analyses, and environmental niche comparisons. Four different species were found inside the Xylodon raduloides complex, with a biogeographic distribution pattern bound by geographic regions: Europe, North America, Patagonia, and Australia-New Zealand. Molecular, morphological, and environmental evidences delimit two lineages within this complex: a Northern Hemisphere clade with longer basidiospores and wider ranges in temperature and precipitation tolerance, and a Southern Hemisphere clade with smaller and more spherical basidiospores, and an isothermal and more humid climate preference. The integrative taxonomic approach used in this study demonstrates congruence between data sets and shows how morphological and environmental characteristics contribute to the differentiation of fungal species complexes. By combining various sources of taxonomic information, three new species are described: Xylodon laurentianus, X. novozelandicus, and X. patagonicus.
Original language | English (US) |
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Article number | 9 |
Journal | IMA Fungus |
Volume | 10 |
Issue number | 1 |
DOIs | |
State | Published - Jul 2 2019 |
Funding
Thanks to Daniel L. Lindner and Karen Nakasone from the Forest Products Laboratory (USDA), Adrienne Stanton, Duckchul Park and Peter R. Johnston from Manaaki Whenua - Landcare Research, Auckland, Reihard Fitzek from San Ignacio del Huinay Foundation, Chile, and the curators of CFMR, NY, and PPD for their invaluable assistance arranging specimens and culture loans and during fieldwork. Thanks to Marian Glenn (Seton Hall University) for comments to the manuscript. We acknowledge support of the publication fee by the CSIC Open Access Publication Support Initiative through its Unit of Information Resources for Research (URICI).
Keywords
- Basidiomycota
- Biogeography
- Corticioid fungi
- Environmental niche
- Hymenochaetales
- Morphological traits
- Multilocus phylogeny
- New taxa
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Agricultural and Biological Sciences (miscellaneous)