| 1. |
- Divakar, Pradeep K., et al.
(författare)
-
Evolution of complex symbiotic relationships in a morphologically derived family of lichen-forming fungi
- 2015
-
Ingår i: New Phytologist. - : Wiley. - 0028-646X .- 1469-8137. ; 208:4, s. 1217-1226
-
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.
|
|
| 2. |
- Mark, Kristiina, et al.
(författare)
-
Testing morphology-based delimitation of Vulpicida juniperinus and V. tubulosus (Parmeliaceae) using three molecular markers.
- 2012
-
Ingår i: Lichenologist. - 0024-2829. ; 44:6, s. 757-772
-
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.
|
|
| 3. |
- Saag, Andres, et al.
(författare)
-
Third world list of cetrarioid lichens: A databased tool for documentation of nomenclatural data - lessons learned
- 2013
-
Ingår i: Taxon. - : Wiley. - 0040-0262. ; 62:3, s. 591-603
-
Tidskriftsartikel (refereegranskat)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.
|
|
| 4. |
- Bursill, D., et al.
(författare)
-
Gout, Hyperuricemia, and Crystal-Associated Disease Network Consensus Statement Regarding Labels and Definitions for Disease Elements in Gout
- 2019
-
Ingår i: Arthritis Care & Research. - : Wiley. - 2151-464X. ; 71:3, s. 427-434
-
Tidskriftsartikel (refereegranskat)abstract
- Objective The language currently used to describe gout lacks standardization. The aim of this project was to develop a consensus statement on the labels and definitions used to describe the basic disease elements of gout. Methods Experts in gout (n = 130) were invited to participate in a Delphi exercise and face-to-face consensus meeting to reach consensus on the labeling and definitions for the basic disease elements of gout. Disease elements and labels in current use were derived from a content analysis of the contemporary medical literature, and the results of this analysis were used for item selection in the Delphi exercise and face-to-face consensus meeting. Results There were 51 respondents to the Delphi exercise and 30 attendees at the face-to-face meeting. Consensus agreement (>= 80%) was achieved for the labels of 8 disease elements through the Delphi exercise; the remaining 3 labels reached consensus agreement through the face-to-face consensus meeting. The agreed labels were monosodium urate crystals, urate, hyperuric(a)emia, tophus, subcutaneous tophus, gout flare, intercritical gout, chronic gouty arthritis, imaging evidence of monosodium urate crystal deposition, gouty bone erosion, and podagra. Participants at the face-to-face meeting achieved consensus agreement for the definitions of all 11 elements and a recommendation that the label "chronic gout" should not be used. Conclusion Consensus agreement was achieved for the labels and definitions of 11 elements representing the fundamental components of gout etiology, pathophysiology, and clinical presentation. The Gout, Hyperuricemia, and Crystal-Associated Disease Network recommends the use of these labels when describing the basic disease elements of gout.
|
|
| 5. |
- Karmin, Monika, et al.
(författare)
-
A recent bottleneck of Y chromosome diversity coincides with a global change in culture.
- 2015
-
Ingår i: Genome Research. - : Cold Spring Harbor Laboratory. - 1088-9051 .- 1549-5469. ; 25:4
-
Tidskriftsartikel (refereegranskat)abstract
- It is commonly thought that human genetic diversity in non-African populations was shaped primarily by an out-of-Africa dispersal 50-100 thousand yr ago (kya). Here, we present a study of 456 geographically diverse high-coverage Y chromosome sequences, including 299 newly reported samples. Applying ancient DNA calibration, we date the Y-chromosomal most recent common ancestor (MRCA) in Africa at 254 (95% CI 192-307) kya and detect a cluster of major non-African founder haplogroups in a narrow time interval at 47-52 kya, consistent with a rapid initial colonization model of Eurasia and Oceania after the out-of-Africa bottleneck. In contrast to demographic reconstructions based on mtDNA, we infer a second strong bottleneck in Y-chromosome lineages dating to the last 10 ky. We hypothesize that this bottleneck is caused by cultural changes affecting variance of reproductive success among males.
|
|
| 6. |
|
|
| 7. |
- Randlane, Tiina, et al.
(författare)
-
A second, updated world list of cetrarioid lichens
- 1997
-
Ingår i: Bryologist. - 1938-4378. ; 100:1, s. 109-122
-
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.
|
|
| 8. |
|
|
| 9. |
|
|
| 10. |
- Randlane, Tiina, et al.
(författare)
-
Third world list of cetrarioid lichens - in a new databased form, with amended phylogenetic and type information
- 2013
-
Ingår i: Cryptogamie Mycologie. - 0181-1584. ; 34:1, s. 79-94
-
Tidskriftsartikel (refereegranskat)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.
|
|
