IMA Fungus 10(1): e33844, doi: 10.1186/s43008-019-0010-x
Addressing the diversity of Xylodon raduloides complex through integrative taxonomy
expand article infoMaría P. Martín‡, M. Teresa Telleria§, Margarita Dueñas|, Andrew W. Wilson, Mahajabeen Padamsee#, Peter K. Buchanan¤, Gregory M. Mueller«, María P. Martín§
‡ Real Jardín Botánico_CSIC, Madrid, Spain§ Departamento de Micología, Real Jardín Botánico-CSIC, Madrid, Spain| Real Jardín Botánico (RJB-CSIC), Madrid, Spain¶ Sam Mitchel Herbarium of Fungi, Denver# Systematics Team, Manaaki Whenua Landcare Research, Auckland, New Zealand¤ Landcare Research, Auckland, New Zealand« Chicago Botanic Garden, Glencoe
© María P. Martín, M. Telleria, Margarita Dueñas, Andrew Wilson, Mahajabeen Padamsee, Peter Buchanan, Gregory Mueller, María Martín.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY-NC 4.0), which permits to copy and distribute the article for non-commercial purposes, provided that the article is not altered or modified and the original author and source are credited.
Citation: Martín MP, Telleria MT, Dueñas M, Wilson AW, Padamsee M, Buchanan PK, Mueller GM, Martín MP (2019) Addressing the diversity of Xylodon raduloides complex through integrative taxonomy. IMA Fungus 10(1): e33844. https://doi.org/10.1186/s43008-019-0010-x
Open Access
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.
Keywords
Basidiomycota, Biogeography, Corticioid fungi, Environmental niche, Hymenochaetales, Morphological traits, Multilocus phylogeny, New taxa