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29 results for “Usnea”
Herbarium specimen image of Usnea glabrescens (Nyl. ex Vain.) Vain., part of the collection of Royal Botanic Garden Edinburgh
Part of a training dataset of scanned herbarium specimens. The data paper and a summary landing page will be published on Zenodo as it gets published.<br><br>Content of this deposition:<br><br>- A JSON-LD datafile listing the label data associated with this herbarium specimen. The Darwin and Dublin Core data standards are used for most values.<br>- A JPEG image file of the scanned herbarium sheet.<br>- A lossless TIFF image from which the JPEG image has been derived.
Fig. 1 in New records of lichens and lichenicolous fungi from La Gomera (Canary Islands, Spain), including the new species: Usnea boomiana P. Clerc
Fig. 1. – Schematic map of the Canary Islands with the situation of Gomera (G). The other islands are: Gran Canaria (C), Fuerteventura (F), El Hierro (H), Lanzarote (L), La Palma (P) and Tenerife (T).
Supplementary material 1 from: Degtjarenko P, Jüriado I, Mandel T, Tõrra T, Saag A, Scheidegger C, Randlane T (2019) Microsatellite based genetic diversity of the widespread epiphytic lichen Usnea subfloridana (Parmeliaceae, Ascomycota) in Estonia: comparison of populations from the mainland and an island. MycoKeys 58: 27-45. https://doi.org/10.3897/mycokeys.58.36557
Supplementary material 1 from: Degtjarenko P, Jüriado I, Mandel T, Tõrra T, Saag A, Scheidegger C, Randlane T (2019) Microsatellite based genetic diversity of the widespread epiphytic lichen Usnea subfloridana (Parmeliaceae, Ascomycota) in Estonia: comparison of populations from the mainland and an island. MycoKeys 58: 27-45. https://doi.org/10.3897/mycokeys.58.36557
Supplementary material 2 from: Degtjarenko P, Jüriado I, Mandel T, Tõrra T, Saag A, Scheidegger C, Randlane T (2019) Microsatellite based genetic diversity of the widespread epiphytic lichen Usnea subfloridana (Parmeliaceae, Ascomycota) in Estonia: comparison of populations from the mainland and an island. MycoKeys 58: 27-45. https://doi.org/10.3897/mycokeys.58.36557
Supplementary material 2 from: Degtjarenko P, Jüriado I, Mandel T, Tõrra T, Saag A, Scheidegger C, Randlane T (2019) Microsatellite based genetic diversity of the widespread epiphytic lichen Usnea subfloridana (Parmeliaceae, Ascomycota) in Estonia: comparison of populations from the mainland and an island. MycoKeys 58: 27-45. https://doi.org/10.3897/mycokeys.58.36557
The complete mitochondrial genomes of five lichenized fungi in the genus Usnea (Ascomycota: Parmeliaceae)
<p>ABSTRACT: Known colloquially as ‘Old Man’s Beard’, <em>Usnea</em> is a genus of lichenized Ascomycete fungi characterized by having a fruticose growth form and cartilaginous central axis. The complete mitochondrial genomes of <em>Usnea halei</em>, <em>U. mutabilis</em>, <em>U. subfusca</em>, <em>U. subgracilis</em>, and <em>U. subscabrosa</em> were sequenced using Illumina data and then assembled <em>de novo</em>. These mitogenomes ranged in size from 52,486 bp (<em>U. subfusca</em>) to 94,464 bp (<em>U. subgracilis</em>). All were characterized by having high levels of intronic and intergenic variation, such as ORFs that encode proteins with homology to two homing endonuclease types, LAGLIDADG and GIY-YIG. Genes annotated within these mitogenomes include 14 protein-coding genes, the large and small ribosomal subunits (LSU and SSU), and 23–26 tRNAs. Notably, the <em>atp9</em> gene was absent from each genome. Genomic synteny was highly conserved across the five species. Five conserved mitochondrial genes (<em>nad2</em>, <em>nad4</em>, <em>cox1</em>, <em>cox2</em>, and <em>cox3</em>) were used to infer a best estimate maximum likelihood phylogeny among these five <em>Usnea</em> and other relatives, which yielded relationships consistent with prior published phylogenies.</p>
Fig. 4 Usnea parafloridana K in Evaluation of traditionally circumscribed species in the lichen-forming genus Usnea, section Usnea (Parmeliaceae, Ascomycota) using a six-locus dataset
Fig. 4 Usnea parafloridana K. Mark, Will-Wolf & Randlane sp. nov. – view of general habit (a, b), soralia with isidiomorphs (c), fibrils (d), soralia (e), and branch anatomy (f). Scale bars 7 mm (a, b), 1.5 mm (c), 2 mm (d), 0.4 mm (e), and 0.3 mm (f). Photographed specimens WW14807 (holotype; a, c, e), WW14858 (b, d), and WW14857 (f)
Fig. 3 in Evaluation of traditionally circumscribed species in the lichen-forming genus Usnea, section Usnea (Parmeliaceae, Ascomycota) using a six-locus dataset
Fig. 3 STACEY maximum clade credibility SMC-tree with posterior probabilities (PP) from STACEY (above branches) and *BEAST (below) analyses together with similarity matrix for the section Usnea dataset. The squares represent posterior probabilities (white = 0, black = 1) for pairs of individuals to belong to the same cluster. The lines in the matrix separate major groups (named above matrix), while
Fig. 1 Bayesian 50 in Evaluation of traditionally circumscribed species in the lichen-forming genus Usnea, section Usnea (Parmeliaceae, Ascomycota) using a six-locus dataset
Fig. 1 Bayesian 50 % consensus tree of 18 currently accepted Usnea species based on six concatenated loci, inferred by BEAST. Major groups and secondary chemistry are indicated right of the tree. Branch supports are given in circles: Black circles reflect strong support from both inferences (PP ≥ 95 % for BEAST and BP ≥ 70 % for RAxML), and gray circles strong support from BEAST only. Location and laboratory code are given in brackets. Scale bar shows the number of substitutions per site. Secondary metabolites: BAR barbatic acid, BMY baeomycesic
Fig. 2 in Evaluation of traditionally circumscribed species in the lichen-forming genus Usnea, section Usnea (Parmeliaceae, Ascomycota) using a six-locus dataset
Fig. 2 Box plots of cortex (a, d) and medulla (b, e) thickness measurements and bar charts of medulla density categories (c, f) in clades barbata-chaetophora-dasopoga-diplotypus (bar-das-dip) and barbata-intermedia-lapponica-substerilis (bar-int-lap; first row of charts), and between Usnea barbata specimens from these clades (second row of charts). Box plots show the percentages of the whole width of the measured branch. Center lines are the medians, box limits indicate the 25th and 75th percentiles as determined by R software, whiskers extend
Fig. 2 in Using haplotype networks, estimation of gene flow and phenotypic characters to understand species delimitation in fungi of a predominantly Antarctic Usnea group (Ascomycota, Parmeliaceae)
Fig. 2 Enlargement of the Usnea aurantiaco-atra group of the Bayesian inference (Fig. 1) depicting 101 taxa. Posterior probabilities ≥ 0.95 are visualized by bold branches. Colors match the sampling site colours in Fig. 4a. A! fertile specimen with apothecia, S! vegetative reproduction via soralia. Most important clades of the nested clade analysis (Fig. 4a,b) are plotted on the phylogenetic tree
FIGURE. Typical habitats of Ramalina species on northern South America. A. High paramo, Laguna Anteojos, Sierra Nevada de Merida, where grows on rocks R. anteojina at 4100 m. B. Sub-paramo (timberline), La Aguada, Sierra Nevada de Merida, 3100 m, where are found R. dictyota and R. reducta on shrubs. C. Andean cloud forest, La Victoria, Sierra Nevada de Merida where R. cochlearis, R. cumanensis and R. victoriana are found growing as epiphytes. D. Populations of R. usnea, R. morrocoyensis and R. paradisensis growing as epiphytes on mangroves and Suriana maritima at sea level, National Park Morrocoy, state Falcón; the latter two species are known only from this locality. E. Ramalina usnea is the only species of this genus reported from the Alto Orinoco, Amazonas, near La Esmeralda, 150 m, growing as corticolous in submontane forests, at the top of the picture the Cerro Duida. F. Xerophytic forests from the National Park Cerro Santa Ana, state Falcón, where Ramalina santanensis and R. microphylla are known only growing on soil and rocks at 200–400 m. Photos V. Marcano. in The genus Ramalina Acharius (Ascomycota, Lecanoromycetes, Ramalinaceae) in northern South America
FIGURE. Typical habitats of Ramalina species on northern South America. A. High paramo, Laguna Anteojos, Sierra Nevada de Merida, where grows on rocks R. anteojina at 4100 m. B. Sub-paramo (timberline), La Aguada, Sierra Nevada de Merida, 3100 m, where are found R. dictyota and R. reducta on shrubs. C. Andean cloud forest, La Victoria, Sierra Nevada de Merida where R. cochlearis, R. cumanensis and R. victoriana are found growing as epiphytes. D. Populations of R. usnea, R. morrocoyensis and R. paradisensis growing as epiphytes on mangroves and Suriana maritima at sea level, National Park Morrocoy, state Falcón; the latter two species are known only from this locality. E. Ramalina usnea is the only species of this genus reported from the Alto Orinoco, Amazonas, near La Esmeralda, 150 m, growing as corticolous in submontane forests, at the top of the picture the Cerro Duida. F. Xerophytic forests from the National Park Cerro Santa Ana, state Falcón, where Ramalina santanensis and R. microphylla are known only growing on soil and rocks at 200–400 m. Photos V. Marcano.
Fig. 2. – Usnea boomiana P. Clerc. A in New records of lichens and lichenicolous fungi from La Gomera (Canary Islands, Spain), including the new species: Usnea boomiana P. Clerc
Fig. 2. – Usnea boomiana P. Clerc. A. Basal part with blackish pigmentation; B. Main branches; C. Main branch with slightly constricted lateral branches at ramification points; D. Young soralia with isidiomorphs; E. Mature soralia without isidiomorphs; F. Mature soralia a few isidiomorphs; G. Overmature soralia with numerous isidiomorphs; H. Transversal section of a main branch; I. Small verrucous papillae on the cortex. [A-B: P. van den Boom & B. van den Boom 42838, G; C-E, H: P. Clerc G262116, G; F-G: P. Clerc G262111, G]
Figure 3 from: Cao S, Zhang F, Zheng H, Liu C, Peng F, Zhou Q (2018) Coccomyxa antarctica sp. nov. from the Antarctic lichen Usnea aurantiacoatra. PhytoKeys 98: 107-115. https://doi.org/10.3897/phytokeys.98.25360
Figure 3 The NJ tree based on ITS rDNA (a) and SSU rDNA (b) sequences phylogenetic analyses. The sequences obtained by the authors were exhibited in bold font. The clades referred to Malavasi et al. (2016).
Figure 2 from: Cao S, Zhang F, Zheng H, Liu C, Peng F, Zhou Q (2018) Coccomyxa antarctica sp. nov. from the Antarctic lichen Usnea aurantiacoatra. PhytoKeys 98: 107-115. https://doi.org/10.3897/phytokeys.98.25360
Figure 2 Ultrastructure of Coccomyxa antarctica Shunan Cao & Qiming Zhou, sp. nov. a–c cultured in BBM medium; d-f cultured in PDA medium. a, b mature autosporangium c, d Cup-shaped chloroplast e, f vegetative cell. Key: Ch: chloroplast; Cw: cell wall; Mit: mitochondria; N: nucleus; S: starch granules; Th: thylakoids. Scale bars: 0.5 μm(a, d); 0.2 μm (b, c, e, f).
Figure 1 from: Cao S, Zhang F, Zheng H, Liu C, Peng F, Zhou Q (2018) Coccomyxa antarctica sp. nov. from the Antarctic lichen Usnea aurantiacoatra. PhytoKeys 98: 107-115. https://doi.org/10.3897/phytokeys.98.25360
Figure 1 Morphology of Coccomyxa antarctica Shunan Cao & Qiming Zhou, sp. nov. a–d cultured in BBM medium; e-f cultured in PDA medium. Scale bars: 10 μm.
Figure 2 from: Degtjarenko P, Jüriado I, Mandel T, Tõrra T, Saag A, Scheidegger C, Randlane T (2019) Microsatellite based genetic diversity of the widespread epiphytic lichen Usnea subfloridana (Parmeliaceae, Ascomycota) in Estonia: comparison of populations from the mainland and an island. MycoKeys 58: 27-45. https://doi.org/10.3897/mycokeys.58.36557
Figure 2 Total number of shared haplotypes between populations of Usnea subfloridana in the south-eastern (SE), the western (W) and northern (N) regions of Estonia; the thickness of lines reflects the number of shared haplotypes between populations.
Figure 3 from: Degtjarenko P, Jüriado I, Mandel T, Tõrra T, Saag A, Scheidegger C, Randlane T (2019) Microsatellite based genetic diversity of the widespread epiphytic lichen Usnea subfloridana (Parmeliaceae, Ascomycota) in Estonia: comparison of populations from the mainland and an island. MycoKeys 58: 27-45. https://doi.org/10.3897/mycokeys.58.36557
Figure 3 Usnea subfloridana multilocus genotypes in the principal component analysis (PCA) ordination plot of the first and second axes. Samples are grouped according to the presence of lichen substance: samples containing thamnolic (square) or squamatic acid (circle).
Figure 1 from: Degtjarenko P, Jüriado I, Mandel T, Tõrra T, Saag A, Scheidegger C, Randlane T (2019) Microsatellite based genetic diversity of the widespread epiphytic lichen Usnea subfloridana (Parmeliaceae, Ascomycota) in Estonia: comparison of populations from the mainland and an island. MycoKeys 58: 27-45. https://doi.org/10.3897/mycokeys.58.36557
Figure 1 Distribution map of Usnea subfloridana in Estonia (light grey squares) and study populations (black circles) on Hiiumaa island in the western region (W), in the south-eastern region (SE) and in the northern region of Estonia; the map of Scandinavia was taken from free map resource http://d-maps.com/carte.php?num_car=5977&lang=en.
Figure 6 from: Degtjarenko P, Jüriado I, Mandel T, Tõrra T, Saag A, Scheidegger C, Randlane T (2019) Microsatellite based genetic diversity of the widespread epiphytic lichen Usnea subfloridana (Parmeliaceae, Ascomycota) in Estonia: comparison of populations from the mainland and an island. MycoKeys 58: 27-45. https://doi.org/10.3897/mycokeys.58.36557
Figure 6 Alleles of Usnea subfloridana and explanatory variables mean annual air temperature ('Temp') and geographical longitude of populations ('Long') in the bi-plot of the redundancy analysis (RDA) of the first and second axes. Labels of alleles prefixed by '8' or '9' indicate that these alleles belong to loci Us08 or Us09, respectively; for example, 8201 means that allele 201 is from Us08
Figure 4 from: Degtjarenko P, Jüriado I, Mandel T, Tõrra T, Saag A, Scheidegger C, Randlane T (2019) Microsatellite based genetic diversity of the widespread epiphytic lichen Usnea subfloridana (Parmeliaceae, Ascomycota) in Estonia: comparison of populations from the mainland and an island. MycoKeys 58: 27-45. https://doi.org/10.3897/mycokeys.58.36557
Figure 4 Usnea subfloridana multilocus genotypes (Us02, Us03, Us04, Us05, Us06, Us08, Us09) and explanatory variables mean annual air temperature ('Temp') and the presence of thamnolic acid ('Tham') in a lichen sample in the bi-plot of the redundancy analysis (RDA) of the first and second axes.
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