Evolutionary relationships of nonsexual lichenized fungi: molecular phylogenetic hypotheses for the genera<i>Siphula</i>and<i>Thamnolia</i>from SSU and LSU rDNA

Platt, Jamie L.; Spatafora, Joseph W.

doi:10.1080/00275514.2000.12061183

Cited by 19 publications

(23 citation statements)

References 33 publications

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“…This robust sister relationship was revealed also by Lutzoni et al (2001) and Kauff and Lutzoni (2002). Platt and Spatafora (2000), in their molecular phylogenetic study of the family Icmadophilaceae, rejected the inclusion of this family within the Lecanorales, but could not provide evidence favoring its affiliation with the Helotiales as was suggested earlier (Rambold et al, 1993;Tehler, 1996;Kirk et al, 2001). Eriksson et al (2003) consider this family to be a familiae incertae sedis within the Lecanoromycetes.…”

Section: Phylogenetic Relationships Within the Ascomycota-ourmentioning

confidence: 70%

Phylogenetic classification of peltigeralean fungi (Peltigerales, Ascomycota) based on ribosomal RNA small and large subunits

Miądlikowska

Lutzoni

2004

American J of Botany

110

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To provide a comprehensive molecular phylogeny for peltigeralean fungi and to establish a classification based on monophyly, phylogenetic analyses were carried out on sequences from the nuclear ribosomal large (LSU) and small (SSU) subunits obtained from 113 individuals that represent virtually all main lineages of ascomycetes. Analyses were also conducted on a subset of 77 individuals in which the ingroup consisted of 59 individuals representing six families, 12 genera, and 54 species potentially part of the Peltigerineae/Peltigerales. Our study revealed that all six families together formed a strongly supported monophyletic group within the Lecanoromycetidae. We propose here a new classification for these lichens consisting of the order Peltigerales and two suborders-Collematineae subordo nov. (Collemataceae, Placynthiaceae, and Pannariaceae) and Peltigerineae (Lobariaceae, Nephromataceae, and Peltigeraceae). To accommodate these new monophyletic groups, we redefined the Lecanorineae, Pertusariales, and Lecanorales sensu Eriksson et al. (Outline of Ascomycota-2003, Myconet 9: 1-103, 2003). Our study confirms the monophyly of the Collemataceae, Lobariaceae, Nephromataceae, and Peltigeraceae, and the genera Nephroma, Sticta, and Peltigera. However, Leptogium, Lobaria, Pseudocyphellaria, and Solorina were found to be nonmonophyletic genera. Reconstruction of ancestral symbiotic states within the Peltigerales, using maximum likelihood (ML) and a Bayesian approach to account for phylogenetic uncertainty, revealed an evolutionary scenario in which bimembered associations with cyanobacteria were ancestral, followed by multiple independent acquisitions of green algae to form tripartite symbioses and rare subsequent losses of the cyanobiont to form bimembered symbioses with green algae.

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Section: Phylogenetic Relationships Within the Ascomycota-ourmentioning

confidence: 70%

Phylogenetic classification of peltigeralean fungi (Peltigerales, Ascomycota) based on ribosomal RNA small and large subunits

Miądlikowska

Lutzoni

2004

American J of Botany

110

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“…Clade ‘E’ is characterized the presence of fatty acids. Secondary chemistry has been found previously in other, only distantly related groups of lichenized fungi to be a predictor of phylogenetic relationships, including Baeomycetaceae [ 72 ], Graphidaceae [ 73 ], Pertusariaceae [ 74 , 75 ], Teloschistaceae [ 76 ], and also several clades within Parmeliaceae [ 3 , 77 , 78 ].…”

Section: Discussionmentioning

confidence: 94%

An Integrative Approach for Understanding Diversity in the Punctelia rudecta Species Complex (Parmeliaceae, Ascomycota)

et al. 2016

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High levels of cryptic diversity have been documented in lichenized fungi, especially in Parmeliaceae, and integrating various lines of evidence, including coalescent-based species delimitation approaches, help establish more robust species circumscriptions. In this study, we used an integrative taxonomic approach to delimit species in the lichen-forming fungal genus Punctelia (Parmeliaceae), with a particular focus on the cosmopolitan species P. rudecta. Nuclear, mitochondrial ribosomal DNA and protein-coding DNA sequences were analyzed in phylogenetic and coalescence-based frameworks. Additionally, morphological, ecological and geographical features of the sampled specimens were evaluated. Five major strongly supported monophyletic clades were recognized in the genus Punctelia, and each clade could be characterized by distinct patterns in medullary chemistry. Punctelia rudecta as currently circumscribed was shown to be polyphyletic. A variety of empirical species delimitation methods provide evidence for a minimum of four geographically isolated species within the nominal taxon Punctelia rudecta, including a newly described saxicolous species, P. guanchica, and three corticolous species. In order to facilitate reliable sample identification for biodiversity, conservation, and air quality bio-monitoring research, these three species have been epitypified, in addition to the description of a new species.

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“…Two other genera, Siphula and Leprocaulon , would have been ideal for this study based on their reproductive mode and species number. However, Siphula has also been shown to be polyphyletic (Platt & Spatafora, 2000; Stenroos et al ., 2002; Grube & Kantvilas, 2006), and the monophyly of Leprocaulon has yet to be confirmed. Specimens have been deposited in the Wisconsin State Herbarium (WIS) or were obtained from the Botanisches Museum & Botanischer Garten Berlin‐Dahlem (B).…”

Section: Methodsmentioning

confidence: 99%

Dissociation and horizontal transmission of codispersing lichen symbionts in the genus Lepraria (Lecanorales: Stereocaulaceae)

Nelsen

Gargas²

2007

New Phytologist

109

107

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Summary• Lichenized fungi of the genus Lepraria lack ascomata and conidiomata, and symbionts codisperse by soredia. Here, it is determined whether algal symbionts associated with Lepraria are monophyletic, and whether fungal and algal phylogenies are congruent, both of which are indicative of a long-term, continuous association between symbionts.• The internal transcribed spacer (ITS) and part of the actin type I locus were sequenced from algae associated with Lepraria , and the fungal ITS and mitochondrial small subunit (mtSSU) were sequenced from fungal symbionts. Phylogenetic analyses tested for monophyly of algal symbionts and congruence between algal and fungal phylogenies.• Algae associated with Lepraria were not monophyletic, and identical algae associated with different Lepraria individuals and species. Algal and fungal phylogenies were not congruent, suggesting a lack of strict codiversification.• This study suggests that associations between symbionts are not strictly maintained over evolutionary time. The ability to switch partners may provide benefits similar to genetic recombination, which may have helped this lineage persist.

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Evolutionary relationships of nonsexual lichenized fungi: molecular phylogenetic hypotheses for the generaSiphulaandThamnoliafrom SSU and LSU rDNA

Cited by 19 publications

References 33 publications

Phylogenetic classification of peltigeralean fungi (Peltigerales, Ascomycota) based on ribosomal RNA small and large subunits

Phylogenetic classification of peltigeralean fungi (Peltigerales, Ascomycota) based on ribosomal RNA small and large subunits

An Integrative Approach for Understanding Diversity in the Punctelia rudecta Species Complex (Parmeliaceae, Ascomycota)

Dissociation and horizontal transmission of codispersing lichen symbionts in the genus Lepraria (Lecanorales: Stereocaulaceae)

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