| 1. |
- Divakar, Pradeep K., et al.
(författare)
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Evolution of complex symbiotic relationships in a morphologically derived family of lichen-forming fungi
- 2015
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Ingår i: New Phytologist. - : Wiley. - 0028-646X .- 1469-8137. ; 208:4, s. 1217-1226
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Tidskriftsartikel (refereegranskat)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.
(författare)
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Testing morphology-based delimitation of Vulpicida juniperinus and V. tubulosus (Parmeliaceae) using three molecular markers.
- 2012
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Ingår i: Lichenologist. - 0024-2829. ; 44:6, s. 757-772
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Tidskriftsartikel (refereegranskat)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.
(författare)
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The cetrarioid core group revisited (Lecanorales: Parmeliaceae)
- 2011
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Ingår i: Lichenologist. - 0024-2829. ; 43:6, s. 537-551
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Tidskriftsartikel (refereegranskat)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.
(författare)
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A second, updated world list of cetrarioid lichens
- 1997
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Ingår i: Bryologist. - 1938-4378. ; 100:1, s. 109-122
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Tidskriftsartikel (refereegranskat)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.
(författare)
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Allocetraria
- 2011
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Ingår i: Nordic Lichen Flora Volume 4 – Parmeliaceae. - 9789185221240 ; 4, s. 17-18
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Bokkapitel (refereegranskat)abstract
- Abstract is not available.
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| 7. |
- Randlane, Tiina, et al.
(författare)
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Asahinea
- 2011
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Ingår i: Nordic Lichen Flora Volume 4 – Parmeliaceae. - 9789185221240 ; 4, s. 21-22
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Bokkapitel (refereegranskat)abstract
- Abstract is not available.
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| 8. |
- Randlane, Tiina, et al.
(författare)
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Flavocetraria
- 2011
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Ingår i: Nordic Lichen Flora Volume 4 – Parmeliaceae. - 9789185221240 ; 4, s. 52-53
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Bokkapitel (refereegranskat)abstract
- Abstract is not available.
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