Phylogenetic affiliations of members of the heterogeneous lichen-forming fungi of the genus Lecidea sensu Zahlbruckner (Lecanoromycetes, Ascomycota)

The genus Lecidea Ach. sensu lato (sensu Zahlbruckner) includes almost 1200 species, out of which only 100 species represent Lecidea sensu stricto (sensu Hertel). The systematic position of the remaining species is mostly unsettled but anticipated to represent several unrelated lineages within Lecan...

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Published in:	Mycologia Vol. 103; no. 5; pp. 983 - 1003
Main Authors:	Schmull, Michaela, Miadlikowska, Jolanta, Pelzer, Monika, Stocker-Wörgötter, Elfie, Hofstetter, Valerie, Fraker, Emily, Hodkinson, Brendan P., Reeb, Valerie, Kukwa, Martin, Lumbsch, H. Thorsten, Kauff, Frank, Lutzoni, François
Format:	Journal Article
Language:	English
Published:	England Taylor & Francis 01-09-2011 Mycological Society of America
Subjects:	Ascomycota Ascomycota - classification Ascomycota - genetics ascus type Base Sequence Biological taxonomies DNA, Fungal - analysis DNA, Fungal - genetics DNA, Mitochondrial - genetics DNA, Ribosomal - analysis DNA, Ribosomal - genetics DNA, Ribosomal Spacer - genetics Flora Genera Lecanoromycetidae Lecidea Lecideaceae Lecideales lichen-forming ascomycetes Lichenology Lichens mitochondrial ribosomal small subunit (mtSSU) molecular phylogenetic classification nuclear ribosomal large subunit (nucLSU) nuclear ribosomal small subunit (nucSSU) photobiont Phylogenetics Phylogeny Porpidia Ribosomal DNA ribosomal internal transcribed spacers (ITS) and 5.8S nuclear ribosomal DNA Ribosome Subunits, Large - genetics Ribosome Subunits, Small - genetics RNA Polymerase II RNA polymerase II largest subunit (RPB1) RNA polymerase II second largest subunit (RPB2) RNA, Ribosomal, 5.8S Schaereria secondary metabolites Sequence Alignment Sequence Analysis, DNA Taxa
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Summary:	The genus Lecidea Ach. sensu lato (sensu Zahlbruckner) includes almost 1200 species, out of which only 100 species represent Lecidea sensu stricto (sensu Hertel). The systematic position of the remaining species is mostly unsettled but anticipated to represent several unrelated lineages within Lecanoromycetes. This study attempts to elucidate the phylogenetic placement of members of this heterogeneous group of lichen-forming fungi and to improve the classification and phylogeny of Lecanoromycetes. Twenty-five taxa of Lecidea sensu lato and 22 putatively allied species were studied in a broad selection of 268 taxa, representing 48 families of Lecanoromycetes. Six loci, including four ribosomal and two protein-coding genes for 315- and 209-OTU datasets were subjected to maximum likelihood and Bayesian analyses. The resulting well supported phylogenetic relationships within Lecanoromycetes are in agreement with published phylogenies, but the addition of new taxa revealed putative rearrangements of several families (e.g. Catillariaceae, Lecanoraceae, Lecideaceae, Megalariaceae, Pilocarpaceae and Ramalinaceae). As expected, species of Lecidea sensu lato and putatively related taxa are scattered within Lecanoromycetidae and beyond, with several species nested in Lecanoraceae and Pilocarpaceae and others placed outside currently recognized families in Lecanorales and orders in Lecanoromycetidae. The phylogenetic affiliations of Schaereria and Strangospora are outside Lecanoromycetidae, probably with Ostropomycetidae. All species referred to as Lecidea sensu stricto based on morphology (including the type species, Lecidea fuscoatra [L.] Ach.) form, with Porpidia species, a monophyletic group with high posterior probability outside Lecanorales, Peltigerales and Teloschistales, in Lecanoromycetidae, supporting the recognition of order Lecideales Vain. in this subclass. The genus name Lecidea must be redefined to apply only to Lecidea sensu stricto and to include at least some members of the genus Porpidia. Based on morphological and chemical similarities, as well as the phylogenetic relationship of Lecidea pullata sister to Frutidella caesioatra, the new combination Frutidella pullata is proposed here.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0027-5514 1557-2536
DOI:	10.3852/10-234