<i>Collema fasciculare</i> belongs in <i>Arctomiaceae</i>

Otálora, Mónica A.G.; Wedin, Mats

doi:10.1017/s0024282912000849

Cited by 23 publications

(26 citation statements)

References 39 publications

(62 reference statements)

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“…This small family consists of three genera, all of which are associated with the cyanobacterium Nostoc as the main photobiont: Arctomia (six recognized species and four newly added from the former Collema fasciculare group; Otálora and Wedin, 2013), the monospecific Gregorella , and Wawea (Magain and Sérusiaux, 2012). This family was always strongly supported as monophyletic in previous work (e.g., Lumbsch et al, 2005; Magain and Sérusiaux, 2012), although its placement in the Ostropomycetidae was never recovered with high confidence (incertae sedis in Lumbsch and Huhndorf, 2010).…”

Section: Resultsmentioning

confidence: 99%

“…Recently, protein-coding markers (usually RPB1 and RPB2 , but also beta-tubulin, GAPDH , and MCM7 ) have been more frequently used for phylogenetic inference within Lecanoromycetes (e.g., Baloch et al, 2010; Crespo et al, 2010; Hofstetter et al, 2007; Lumbsch et al, 2007b; Miadlikowska et al, 2006; Myllys et al, 2005; Otálora and Wedin, 2013; Otálora et al 2013a; Parnmen et al, 2012; Reeb et al, 2004; Rivas Plata et al, 2012a, 2012b; Schmitt et al, 2010). Only five studies (Hofstetter et al, 2007; Lumbsch et al, 2004; Miadlikowska et al, 2006; Reeb et al, 2004; Wedin et al, 2005) were designed specifically to reconstruct phylogenetic relationships within the Lecanoromycetes at the family and higher ranks as a framework for the evaluation of existing classifications.…”

Section: Introductionmentioning

confidence: 99%

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A multigene phylogenetic synthesis for the class Lecanoromycetes (Ascomycota): 1307 fungi representing 1139 infrageneric taxa, 317 genera and 66 families

Miądlikowska

Kauff

Högnabba

et al. 2014

Molecular Phylogenetics and Evolution

251

230

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The Lecanoromycetes is the largest class of lichenized Fungi, and one of the most species-rich classes in the kingdom. Here we provide a multigene phylogenetic synthesis (using three ribosomal RNA-coding and two protein-coding genes) of the Lecanoromycetes based on 642 newly generated and 3329 publicly available sequences representing 1139 taxa, 317 genera, 66 families, 17 orders and five subclasses (four currently recognized: Acarosporomycetidae, Lecanoromycetidae, Ostropomycetidae, Umbilicariomycetidae; and one provisionarily recognized, ‘Candelariomycetidae’). Maximum likelihood phylogenetic analyses on four multigene datasets assembled using a cumulative supermatrix approach with a progressively higher number of species and missing data (5-gene, 5+4-gene, 5+4+3-gene and 5+4+3+2-gene datasets) show that the current classification includes non-monophyletic taxa at various ranks, which need to be recircumscribed and require revisionary treatments based on denser taxon sampling and more loci. Two newly circumscribed orders (Arctomiales and Hymeneliales in the Ostropomycetidae) and three families (Ramboldiaceae and Psilolechiaceae in the Lecanorales, and Strangosporaceae in the Lecanoromycetes inc. sed.) are introduced. The potential resurrection of the families Eigleraceae and Lopadiaceae is considered here to alleviate phylogenetic and classification disparities. An overview of the photobionts associated with the main fungal lineages in the Lecanoromycetes based on available published records is provided. A revised schematic classification at the family level in the phylogenetic context of widely accepted and newly revealed relationships across Lecanoromycetes is included. The cumulative addition of taxa with an increasing amount of missing data (i.e., a cumulative supermatrix approach, starting with taxa for which sequences were available for all five targeted genes and ending with the addition of taxa for which only two genes have been sequenced) revealed relatively stable relationships for many families and orders. However, the increasing number of taxa without the addition of more loci also resulted in an expected substantial loss of phylogenetic resolving power and support (especially for deep phylogenetic relationships), potentially including the misplacements of several taxa. Future phylogenetic analyses should include additional single copy protein-coding markers in order to improve the tree of the Lecanoromycetes. As part of this study, a new module (“Hypha”) of the freely available Mesquite software was developed to compare and display the internodal support values derived from this cumulative supermatrix approach.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A multigene phylogenetic synthesis for the class Lecanoromycetes (Ascomycota): 1307 fungi representing 1139 infrageneric taxa, 317 genera and 66 families

Miądlikowska

Kauff

Högnabba

et al. 2014

Molecular Phylogenetics and Evolution

251

230

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“…Otálora, M., Aragón, G., Martínez, I., Wedin, M. (2013) Cardinal characters on a slippery slope -A re-evaluation of phylogeny, character evolution, and evolutionary rates in the jelly lichens (Collemataceae s. str.).…”

Section: Citation For the Original Published Paper (Version Of Record)mentioning

confidence: 99%

“…Some small, mainly monotypic groups of Collema were not represented in the sampling due to lack of recent material, and the Collema Fasciculare-group was excluded as it belongs to Arctomia s. lat. (Otálora and Wedin, 2013). Sequence data of the ribosomal genes mtSSU rDNA, nuLSU rDNA and the two protein-coding genes MCM7…”

Section: Taxon Samplingmentioning

confidence: 99%

“…Finally, a species that morphologically otherwise is similar to Leptogium was described as an Arctomia (Magain and Sérusiaux, 2012), and the Collema Fasciculare-group was recently also shown to belong to Arctomia s. lat. in the Ostropomycetideae (Otálora and Wedin, 2013). The remaining two genera with septate ascospores (Collema and Leptogium) together form a distinct monophyletic group that should correctly be classified as the Collemataceae, and which is characterized by a non-stratified ("homoiomerous") thallus, a closed disc-shaped fruitbody wall (exciple) and a distinct ascus type similar to the Micarea-type, shared with Placynthiaceae, the closest relative (Spribille and Muggia, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Cardinal characters on a slippery slope – A re-evaluation of phylogeny, character evolution, and evolutionary rates in the jelly lichens (Collemataceae s. str)

Otálora

Aragón

Martínez

et al. 2013

Molecular Phylogenetics and Evolution

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PostprintThis is the accepted version of a paper published in Molecular Phylogenetics and Evolution. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination. Citation for the original published paper (version of record):Otálora, M., Aragón, G., Martínez, I., Wedin, M. (2013) Cardinal characters on a slippery slope -A re-evaluation of phylogeny, character evolution, and evolutionary rates in the jelly lichens (Collemataceae s. str.). Evolution, http://dx.doi.org/10. 1016/j.ympev.2013.04.004 Access to the published version may require subscription. Here we reconstruct the phylogeny of Collemataceae using Bayesian and maximum likelihood analyses based on mitochondrial (mtSSU rDNA) and nuclear (nuLSU rDNA, Betatubulin and MCM7) markers of 70 Collemataceae species. We studied the evolution of four morphological and ecological characters traditionally used to delimit genera and infra-generic Molecular Phylogenetics andgroups. Finally, we tested if differences in branch-lengths between clades are due to differences in rates of molecular evolution. Eleven strongly supported groups were recovered in the resulting well-resolved and well-supported phylogeny. The presence/absence of a eucortex, which is currently used as the cardinal character to define genera in the group, does not characterize monophyletic groups corresponding to the genera as currently circumscribed.Ancestral state reconstruction indicates that the most recent common ancestor of the jelly lichens most likely was saxicolous/terricolous, lacked a tomentum, and had transversally septate ascospores. Although the cortex state could not be reconstructed for the ancestor of the family, our observations indicate that a lack of cortex may have an evolutionary advantage in saxicolous/terricolous species in semi-arid environments, as non-corticate species tends to be larger and occur in higher frequency and abundance in such regions, compared to corticate species. A significant evidence for faster evolutionary rates was found in a lineage mainly including taxa that occur in the wet tropics and humid temperate regions, compared to other lineages. We suggest that this can explain the greater diversity of Collemataceae in tropical and humid areas.Key words: Accelerated evolutionary rates, ancestral state reconstruction, Collemataceae, cortex, habitat, lichen-forming fungi. 4 IntroductionLichens are fungi utilizing photosynthetic algae or cyanobacteria for the exploitation of carbohydrates. The symbiotic association allows both the fungal and algal partners to colonize a range of habitats which otherwise would be inhabitable to them. Molecular phylogenetic studies have recently led to significant advances in the understanding of relationships between fungal groups including lichen fungi (Lutzoni et al., 2004; Miadlikowska et al., 2006;Hibbett et al., 2007; Ekman et al., 2008). These and other studies have provided strong evidence that many commonly used morphological and anatomical characters traditionally...

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