Change search
ReferencesLink to record
Permanent link

Direct link
Diagnostics for a troubled backbone: testing topologicalhypotheses of trapelioid lichenized fungi in a large-scalephylogeny of Ostropomycetidae (Lecanoromycetes)
University of Graz.
University of Graz.
Swedish Museum of Natural History, Department of Botany.
Senckenberg Forschungsinstitut und Naturmuseum.
Show others and affiliations
2015 (English)In: Fungal diversity, ISSN 1560-2745, Vol. 73, 239-275 p.Article in journal (Refereed) Published
Abstract [en]

Trapelioid fungi constitute a widespread groupof mostly crust-forming lichen mycobionts that are key tounderstanding the early evolutionary splits in theOstropomycetidae, the second-most species-rich subclassof lichenized Ascomycota. The uncertain phylogeneticresolution of the approximately 170 species referred tothis group contributes to a poorly resolved backbone forthe entire subclass. Based on a data set including 657newly generated sequences from four ribosomal and fourprotein-coding gene loci, we tested a series of a priori andnew evolutionary hypotheses regarding the relationshipsof trapelioid clades within Ostropomycetidae. We foundstrong support for a monophyletic group of nine coretrapelioid genera but no statistical support to reject thelong-standing hypothesis that trapelioid genera are sisterto Baeomycetaceae or Hymeneliaceae. However, we canreject a sister group relationship to Ostropales with highconfidence. Our data also shed light on several longstandingquestions, recovering Anamylopsoraceae nestedwithin Baeomycetaceae, elucidating two major monophyleticgroups within trapelioids (recognized here asTrapeliaceae and Xylographaceae), and rejecting themonophyly of the genus Rimularia. We transfer elevenspecies of the latter genus to Lambiella and describe thegenus Parainoa to accommodate a previously misunderstoodspecies of Trapeliopsis. Past phylogenetic studies inOstropomycetidae have invoked Bdivergence order^ fordrawing taxonomic conclusions on higher level taxa.Our data show that if backbone support is lacking, contrastingsolutions may be recovered with different oradded data. We accordingly urge caution in concludingevolutionary relationships from unresolved phylogenies.

Place, publisher, year, edition, pages
2015. Vol. 73, 239-275 p.
Keyword [en]
Ascomycota, Fungi, Lambiella, Lecanoromycetes, Ostropomycetidae, Parainoa, Paraphyly, SOWHtest, taxon sampling
National Category
Biological Systematics
Research subject
Diversity of life
URN: urn:nbn:se:nrm:diva-1277DOI: DOI 10.1007/s13225-015-0332-yOAI: diva2:848484
The Swedish Taxonomy Initiative (ArtDatabanken, SLU)
Available from: 2015-08-25 Created: 2015-08-25 Last updated: 2015-08-25Bibliographically approved

Open Access in DiVA

fulltext(6513 kB)31 downloads
File information
File name FULLTEXT01.pdfFile size 6513 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Westberg, Martin
By organisation
Department of Botany
In the same journal
Fungal diversity
Biological Systematics

Search outside of DiVA

GoogleGoogle Scholar
Total: 31 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 41 hits
ReferencesLink to record
Permanent link

Direct link