Phylogeny of the Acarosporaceae (Lecanoromycetes, Ascomycota, Fungi) and the evolution of carbonized ascomata
2015 (English)In: Fungal diversity, ISSN 1560-2745, Vol. 73, 145-158 p.Article in journal (Refereed) Published
The phylogeny of the Acarosporaceae (Lecanoromycetes, Acarosporomycetidae, Acarosporales) is investigated using data from three molecular markers; nuclear ITS-LSU rDNA, mitochondrial SSU and β-tubulin. Acarosporaceae is shown to be constituted by six main clades; Myriospora, Timdalia, Pleopsidium, a clade composed by Acarospora rhizobola and A. terricola, the poorly supported Sarcogyne clade (including several Polysporina and Acarospora species) and the Acarospora clade (including the type of Polysporina, P. simplex, and several other Polysporina species). The common ancestor of the Acarosporaceae did not produce strongly black pigmented (carbonized or melanized) ascomata, but this trait has arisen secondarily and independently numerous times in the evolution of the group. The number of changes in character states of both carbonized epihymenium and carbonized exciple are considerably more than the minimum number. The genera Sarcogyne and Polysporina—largely circumscribed based on the presence of black pigmented ascomata—are shown to be distinctly non-monophyletic. The presence of green algae in the ascoma margin (lecanorine or lecideine ascomata) may vary even within single species.
Place, publisher, year, edition, pages
2015. Vol. 73, 145-158 p.
Convergent evolution, lichens, Lichenized fungi, Lichenicolous
Research subject Diversity of life
IdentifiersURN: urn:nbn:se:nrm:diva-1280DOI: 10.1007/s13225-015-0332-yOAI: oai:DiVA.org:nrm-1280DiVA: diva2:848632
FunderThe Swedish Taxonomy Initiative (ArtDatabanken, SLU)Swedish Research Council, 621-2009-5372Swedish Research Council, 621-2012-3990