Journal
FUNGAL DIVERSITY
Volume 73, Issue 1, Pages 145-158Publisher
SPRINGER
DOI: 10.1007/s13225-015-0325-x
Keywords
Convergent evolution; Lichens; Lichenized fungi; Lichenicolous
Categories
Funding
- Swedish Taxonomy Initiative (Svenska Artprojektet)
- Swedish Research Council [VR 621-2009-5372, VR 621-2012-3990]
- Faculty of Environmental Sciences, Czech University of Life Sciences Prague
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The phylogeny of the Acarosporaceae (Lecanoromycetes, Acarosporomycetidae, Acarosporales) is investigated using data from three molecular markers; nuclear ITS-LSU rDNA, mitochondrial SSU and beta-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.
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