| 1. |
- Divakar, Pradeep K., et al.
(author)
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Evolution of complex symbiotic relationships in a morphologically derived family of lichen-forming fungi
- 2015
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In: New Phytologist. - : Wiley. - 0028-646X .- 1469-8137. ; 208:4, s. 1217-1226
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Journal article (peer-reviewed)abstract
- We studied the evolutionary history of the Parmeliaceae (Lecanoromycetes, Ascomycota), one of the largest families of lichen-forming fungi with complex and variable morphologies, also including several lichenicolous fungi. We assembled a six-locus data set including nuclear, mitochondrial and low-copy protein-coding genes from 293 operational taxonomic units (OTUs). The lichenicolous lifestyle originated independently three times in lichenized ancestors within Parmeliaceae, and a new generic name is introduced for one of these fungi. In all cases, the independent origins occurred c. 24 million yr ago. Further, we show that the Paleocene, Eocene and Oligocene were key periods when diversification of major lineages within Parmeliaceae occurred, with subsequent radiations occurring primarily during the Oligocene and Miocene. Our phylogenetic hypothesis supports the independent origin of lichenicolous fungi associated with climatic shifts at the Oligocene-Miocene boundary. Moreover, diversification bursts at different times may be crucial factors driving the diversification of Parmeliaceae. Additionally, our study provides novel insight into evolutionary relationships in this large and diverse family of lichen-forming ascomycetes.
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| 2. |
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| 3. |
- Mark, Kristiina, et al.
(author)
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Testing morphology-based delimitation of Vulpicida juniperinus and V. tubulosus (Parmeliaceae) using three molecular markers.
- 2012
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In: Lichenologist. - 0024-2829. ; 44:6, s. 757-772
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Journal article (peer-reviewed)abstract
- The delimitation of two morphologically similar and not easily separable Vulpicida species,V. juniperinus and V. tubulosus, is analyzed using nuclear ITS and Mcm7, and mitochondrial SSU DNA sequences. Seventy-nine Vulpicida specimens, most from the two focal taxa, are included in the three-locus gene tree. The results from Bayesian and parsimony analyses are presented. There are strong conflicts between the single locus gene trees. Vulpicida juniperinus and V. tubulosus are divided into two clearly distinguished groups in the ITS and concatenated B/MCMC tree. However, these species are mixed in both clades, appearing polyphyletic. Currently accepted V. juniperinus and V. tubulosus are not distinct according to the loci studied. Vulpicida pinastri appears monophyletic based on the available sequences.
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| 4. |
- Nelsen, Matthew P., et al.
(author)
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The cetrarioid core group revisited (Lecanorales: Parmeliaceae)
- 2011
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In: Lichenologist. - 0024-2829. ; 43:6, s. 537-551
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Journal article (peer-reviewed)abstract
- The cetrarioid core group has been the focus of numerous taxonomic and phylogenetic studies in recent years, yet the phylogenetic resolution and support among these clades remains unclear. Here we use four commonly employed loci to estimate if their use increases phylogenetic resolution and support. The present study largely confirms the topologies of previous studies, but with increased support. Approximately half of the genera in the cetrarioid core were not monophyletic. Melanelia sorediella was clustered within Cetrariella, and the combination Cetrariella sorediella (Lettau) V. J. Rico & A. Thell comb. nov. is made. Additionally, the genus Flavocetrariella was supported as part of Nephromopsis and is considered to be a synonym of the latter. Finally, a comparison of genetic distances shows that the maximum intrageneric genetic distance encompassed by many cetrarioid genera is lower than that of many other genera in Parmeliaceae.
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| 5. |
- Randlane, Tiina, et al.
(author)
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A second, updated world list of cetrarioid lichens
- 1997
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In: Bryologist. - 1938-4378. ; 100:1, s. 109-122
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Journal article (peer-reviewed)abstract
- At the present time 135 cetrarioid lichen species can be listed. According to recent revisionary work they are placed into 22 genera. Six new genera (Arctocetraria, Cetrariella, Flavocetraria, Kaernefeltia, Nimisia and Tuckneraria) have been separated since 1993 when the first world list of cetrarioid lichens was presented. The genus Cetrariopsis is included in Nephromopsis in this paper. An alphabetical list of all epithets that have been applied to cetrarioid lichens is given, and the generic name to which they have been assigned is indicated in brackets. The author(s) of each combination, as well as the issue of its valid publication, together with the page and year are also presented. The currently accepted combination is indicated for each epithet. Two new combinations are proposed: Nephromopsis pallescens var. citrina (Taylor) Thell & Randlane and Nephromopsis laii (Thell & Randlane) Saag & Thell.
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| 6. |
- Randlane, Tiina, et al.
(author)
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Allocetraria
- 2011
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In: Nordic Lichen Flora Volume 4 – Parmeliaceae. - 9789185221240 ; 4, s. 17-18
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Book chapter (peer-reviewed)abstract
- Abstract is not available.
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| 7. |
- Randlane, Tiina, et al.
(author)
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Asahinea
- 2011
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In: Nordic Lichen Flora Volume 4 – Parmeliaceae. - 9789185221240 ; 4, s. 21-22
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Book chapter (peer-reviewed)abstract
- Abstract is not available.
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| 8. |
- Randlane, Tiina, et al.
(author)
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Flavocetraria
- 2011
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In: Nordic Lichen Flora Volume 4 – Parmeliaceae. - 9789185221240 ; 4, s. 52-53
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Book chapter (peer-reviewed)abstract
- Abstract is not available.
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| 9. |
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| 10. |
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| 11. |
- Randlane, Tiina, et al.
(author)
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Third world list of cetrarioid lichens - in a new databased form, with amended phylogenetic and type information
- 2013
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In: Cryptogamie Mycologie. - 0181-1584. ; 34:1, s. 79-94
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Journal article (peer-reviewed)abstract
- The third, updated electronic version of the world list of cetrarioid lichens (http://esamba.bo.bg.ut.ee/checklist/cetrarioid/home.php) contains more than 570 names representing 149 accepted species. It is based on a FileMaker powered database, allowing users to view data in different sets and to perform searches. The list presents new information about the phylogenetic status of accepted taxa, and about the type materials for most of the names. A concise list of the cetrarioid lichens displayed below includes all the currently accepted 25 genera and 149 species which are now or have earlier been considered to be cetrarioid; taxa belonging to the monophyletic cetrarioid core group (17 genera and 101 species) are pointed out. A new combination Nephromopsis sikkimensis is proposed and some nomenclatural details discussed.
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| 12. |
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| 13. |
- Saag, Andres, et al.
(author)
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Phylogenetic analysis of cetrarioid lichens with globose ascospores
- 2002
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In: Proceedings of the Estonian Academy of Sciences Biology Ecology. - 1406-0914. ; 51:2, s. 103-123
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Journal article (peer-reviewed)abstract
- The group of cetrarioid lichens with globose ascospores includes 37 species from eight genera. Phylogenetic analysis, using program PAUP 3.1.1, was carried out on two different data sets – morphological (incl. anatomical and chemical) and molecular characters (ITS1, 5.8S, and ITS2 rDNA sequences) – to verify the correspondence of current taxonomy to the probable evolution of the taxa involved. The paraphyletic nature of the genus Allocetraria in regard to two species of Dactylina is assumed based on morphological characters. Still, the separation of these genera is strongly supported by the analysis of molecular data. The genus Tuckermannopsis (11 species) is paraphyletic in regard to Esslingeriana idahoensis and “Nephromopsis” weii. Monophyletic origin can be declared only for the Tuckermannopsis ciliaris group. The analysis based on molecular characters exhibits the monophyletic origin of the group including three Tuckneraria species. Monophyly of the genus Ahtiana was not supported by the analysis of morphological data.
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| 14. |
- Saag, Andres, et al.
(author)
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Third world list of cetrarioid lichens: A databased tool for documentation of nomenclatural data - lessons learned
- 2013
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In: Taxon. - : Wiley. - 0040-0262. ; 62:3, s. 591-603
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Journal article (peer-reviewed)abstract
- The third version of the world list of cetrarioid lichens contains 572 names representing 149 accepted species. It is presented in a new, electronical form, based on a FileMaker-powered database, allowing users to view data in different sets and to perform searches. Type information is added for most of the names, and new information regarding the phylogenetic status of accepted taxa is introduced. Five global taxonomic databases (Catalogue of Life, Encyclopedia of Life, Index Fungorum, LIAS, MycoBank) are compared by scanning the availability of mainly nomenclatural data of 30 selected cetrarioid names (10 accepted names, 10 homotypic and 10 heterotypic synonyms); the significance of digital web resources is discussed.
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| 15. |
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| 16. |
- Thell, Arne, et al.
(author)
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A revision of the North American lichen genus Ahtiana.
- 1995
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In: Bryologist. - 1938-4378. ; 98:4, s. 595-605
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Journal article (peer-reviewed)abstract
- The formerly monotypic genus Ahtiana (type species: A. sphaerosporella (Müll. Arg.) Goward is shown to include two additional species, A. aurescens (Tuck.) Thell & Randl. and A. pallidula (Riddle) Goward & Thell. All three species are endemic to North America, and are characterized by their greenish yellow upper surface, globose ascospores, and caperatic acid in the medulla. The habitat ecology of these lichens is very specialized. Ahtiana is presumably most closely related to Tuckneraria Randl. & Thell and other cetrarioid genera having globose ascospores.
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| 17. |
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| 18. |
- Thell, Arne, et al.
(author)
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Phylogeny of the cetrarioid core (Parmeliaceae) based on five genetic markers
- 2009
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In: Lichenologist. - 0024-2829. ; 41:5, s. 489-511
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Journal article (peer-reviewed)abstract
- Fourteen genera belong to a monophyletic core of cetrarioid lichens, Ahtiana, Allocetraria, Arctocetraria, Cetraria, Cetrariella, Cetreliopsis, Flavocetraria, Kaernefeltia, Masonhalea, Nephromopsis, Tuckermanella, Tuckermannopsis, Usnocetraria and Vulpicida. A total of 71 samples representing 65 species (of 90 worldwide) and all type species of the genera are included in phylogentic analyses based on a complete ITS matrix and incomplete sets of group I intron, β-tubulin, GAPDH and mtSSU sequences. Eleven of the species included in the study are analysed phylogenetically for the first time, and of the 178 sequences, 67 are newly constructed. Two phylogenetic trees, one based solely on the complete ITS-matrix and a second based on total information, are similar, but not entirely identical. About half of the species are gathered in a strongly supported clade composed of the genera Allocetraria, Cetraria s. str., Cetrariella and Vulpicida. Arctocetraria, Cetreliopsis, Kaernefeltia and Tuckermanella are monophyletic genera, whereas Cetraria, Flavocetraria and Tuckermannopsis are polyphyletic. The taxonomy in current use is compared with the phylogenetic results, and future, probable or potential adjustments to the phylogeny are discussed. The single non-DNA character with a strong correlation to phylogeny based on DNA-sequences is conidial shape. The secondary chemistry of the poorly known species Cetraria annae is analyzed for the first time; the cortex contains usnic acid and atranorin, whereas isonephrosterinic, nephrosterinic, lichesterinic, protolichesterinic and squamatic acids occur in the medulla. Notes on the anatomy of Cetraria annae and Flavocetraria minuscula are also provided.
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| 19. |
- Thell, Arne, et al.
(author)
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The lichen genus Allocetraria (Ascomycotina, Parmeliaceae).
- 1995
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In: Flechten Follmann. Contributions to lichenology in honour of Gerhard Follmann.. - 3874293807 ; , s. 353-370
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Book chapter (peer-reviewed)abstract
- The lichen genus Allocetraria (Parmeliaceae) includes eight species distinguished by a palisade plectenchymatous cortex, asci with a very broad axial body, globose or subglobose ascospores, and filiform pycnoconidia. Two new species, A. flavonigrescens Thell et Randl. and A. sinensis Gao, are described, and the new combination A. denticulata (Hue) Thell & Randlane, A. globulans (Nyl.) Thell & Randl., and A. oakesiana (Tuck.) Randl. & Thell are proposed. A potaninii (Oxn.) Randl. & Saag is synonymized with A. stracheyi (Bab.) Kurok. & Lai. The anatomy of the genus is carefully described for the first time.
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| 20. |
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| 21. |
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| 22. |
- Thell, Arne, et al.
(author)
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Usnocetraria
- 2011
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In: Nordic Lichen Flora Volume 4 - Parmeliaceae. - 9789185221240 ; 4, s. 127-130
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Book chapter (peer-reviewed)abstract
- Abstract is not available
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