Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
54
datasets available to search
ShareScore release 0.9.0
Dataset results
54 results for “Laccaria”
FIG. 7. — Laccaria indohimalayana K. Das, I in Fungal Biodiversity Profiles 81-90
FIG. 7. — Laccaria indohimalayana K. Das, I. Bera & Vizzini, sp. nov. (KD 17-20, holotype): A, B, fresh basidiomata in the field and basecamp; C, lamellae; D, E, transverse section through pileipellis; F-H, sterile elements on the face of the lamellae; I, 2- to 4-spored basidia; J, K, sterile elements on the edge of the lamellae; L, transverse section through stipitipellis; M, N, basidiospores under SEM. Scale bars: D-L, 10 µm; M, N, 2 µm.
Allopatric instead of parapatric divergence in an ectomycorrhizal fungus (Laccaria trichodermophora) in tropical sky-islands
<p>In tropical sky-islands, cold-affinity populations tend to become isolated at highlands during the interglacial periods, and to expand into the lowlands where they become more connected during the glacial periods. Although this has been widely studied in trees, it is poorly understood how fungal symbionts can differentiate among mountains (allopatrically), or within a single mountain (parapatrically) due to climate fluctuations. Here, we conducted population genomic analyses on the ectomycorrhizal fungus Laccaria trichodermophora in three tropical sky-islands using Genotyping by Sequencing (GBS) at low DNA concentrations. There were no significant differences between altitudes within a single mountain, but we observed significant genetic differentiation among populations from different mountains, supporting the allopatric differentiation hypothesis. Our results indicate that L. trichodermophora populations are under a sky-island population dynamics that started during the Pleistocene climate fluctuations.</p>
FIGURE 3 in Laccaria rubroalba sp. nov. (Hydnangiaceae, Agaricales) from Southwestern China
FIGURE 3. Maximum-likelihood (ML) phylogram based on ITS rDNA sequence data showing the phylogenetic position of Laccaria rubroalba with selected Laccaria species. The right number on the nodes denotes the bootstrap values ≥ 60%. The left number on the nodes indicates the Bayesian analysis probability values ≥ 0.80 in percent.
FIGURE 2 in Laccaria rubroalba sp. nov. (Hydnangiaceae, Agaricales) from Southwestern China
FIGURE 2. Line drawings of microstructures of Laccaria rubroalba. a. Pileipellis b. Hymenium with basidia c. Pleurocystidia d. Basidiospores
FIGURE 2 in Laccaria violaceotincta: a new species from tropical India based on morphology and molecular phylogeny
FIGURE 2. RAxML tree based on ML analysis of nrITS sequence data depicting the taxonomic position of L. violaceotincta within the genus Laccaria. The newly proposed species is indicated in bold face. GenBank accession numbers and geographical origin are given after the name of each taxon. Bootstrap values for ML are placed above or below the branches. BS values ≥50% are shown.
FIGURE 1. A–F in Laccaria violaceotincta: a new species from tropical India based on morphology and molecular phylogeny
FIGURE 1. A–F: Laccaria violaceotincta (CAL 1389, holotype). A. Basidiocarps in their natural habitat; B. Scanning electron micrograph (SEM) of basidiospore; C. Basidium; D. Cheilocystidia; E. Pileipellis. F. Vertical section of stipitipellis towards the apex of the stipe. Scale bars: A = 10 mm; B–D = 10 μm; E–F = 20 μm.
Data from: Extensive gene flow over Europe and possible speciation over Eurasia in the ectomycorrhizal basidiomycete Laccaria amethystina complex.
Biogeographic patterns and large-scale genetic structure have been little studied in ectomycorrhizal fungi, despite the ecological and economic importance of ectomycorrhizal symbioses. We coupled population genetics and phylogenetic approaches to understand spatial structure in fungal populations on a continental scale. Using 9 microsatellite markers, we characterised gene flow among 16 populations of the widespread ectomycorrhizal basidiomycete Laccaria amethystina over Europe (over 2900km). We also widened our scope to two additional populations from Japan (104 km away), and compared them with European populations through microsatellite markers and multi-locus phylogenies, using 3 nuclear genes (NAR, G6PD and ribosomal DNA) and two mitochondrial ribosomal genes. European L. amethystina populations displayed limited differentiation (average FST=0.041) and very weak isolation by distance. This panmictic European pattern may result from effective aerial dispersal of spores, high genetic diversity in populations, and mutualistic interactions with multiple hosts that all facilitate migration. The multi-locus phylogeny based on nuclear genes confirmed that Japanese and European specimens were closely related but clustered on a geographical basis. By using microsatellite markers, we found that Japanese populations were strongly differentiated from the European populations (FST=0.416), more than expected by extrapolating the European pattern of isolation by distance. Population structure analyses clearly separated the populations into two clusters, European and Japanese clusters. We discuss the possibility of isolation by distance in a continuous population (considering some evidence for a ring species over the Northern Hemisphere) versus an allopatric speciation over Eurasia, making L. amethystina a promising model of intercontinental species for future studies.
FIGURE 4. Laccaria macrocystidiata. A–F Fresh basidiomata. A–B Coll. GDOR 5080. C Coll. GDOR 5078. D Coll. GDOR 5082. E Coll. GDOR 5079. F. Coll. GDOR 5077 in Phylogenetic reappraisal and epitypification of Laccaria macrocystidiata (Hydnangiaceae, Basidiomycota)
FIGURE 4. Laccaria macrocystidiata. A–F Fresh basidiomata. A–B Coll. GDOR 5080. C Coll. GDOR 5078. D Coll. GDOR 5082. E Coll. GDOR 5079. F. Coll. GDOR 5077. Photos: A–C,F by F. Dovana; D by R. Para; E by C. Lavorato.
FIGURE 6 in Phylogenetic reappraisal and epitypification of Laccaria macrocystidiata (Hydnangiaceae, Basidiomycota)
FIGURE 6. Laccaria macrocystidiata. Spores (SEM photographs). A–C Collection AH38995. D–F Collection AH38993. G–I Collection AH38996. Scale Bars = 2 μm. Photos by G. Moreno.
Data from: Extensive gene flow over Europe and possible speciation over Eurasia in the ectomycorrhizal basidiomycete Laccaria amethystina complex.
Open the record for dataset details and reuse information.
Allopatric instead of parapatric divergence in an ectomycorrhizal fungus (Laccaria trichodermophora) in tropical sky-islands
Open the record for dataset details and reuse information.
Culture performance, gene marker, and transcriptome data for fungal isolates (Chalara longipes, Laccaria bicolor, Serpula lacrymans, and Trichoderma harzianum)
Open the record for dataset details and reuse information.
Data from: Beech roots are simultaneously colonized by multiple genets of the ectomycorrhizal fungus Laccaria amethystina clustered in two genetic groups
In this study we characterize and compare the genetic structure of aboveground and belowground populations of the ectomycorrhizal fungus Laccaria amethystina in an unmanaged mixed beech forest. Fruiting bodies and mycorrhizas of L. amethystina were mapped and collected in four plots in the Świętokrzyskie Mountains (Poland). A total of 563 fruiting bodies and 394 mycorrhizas were successfully genotyped using the rDNA IGS1 (intergenic spacer) and seven SSR (simple sequence repeat) markers. We identified two different genetic clusters of L. amethystina in all of the plots, suggesting that a process of sympatric isolation may be occurring at a local scale. The proportion of individuals belonging to each cluster was similar among plots aboveground while it significantly differed belowground. Predominance of a given cluster could be explained by distinct host preferences or by priority effects and competition among genets. Both aboveground and belowground populations consisted of many intermingling small genets. Consequently, host trees were simultaneously colonized by many L. amethystina genets that may show different ecophysiological abilities. Our data showed that several genets may last for at least one year belowground and sustain into the next season. Ectomycorrhizal species reproducing by means of spores can form highly diverse and persistent belowground genets that may provide the host tree with higher resilience in a changing environment and enhance ecosystem performance.
Figure 6 from: Ramos A, Bandala VM, Montoya L (2017) A new species and a new record of Laccaria (Fungi, Basidiomycota) found in a relict forest of the endangered Fagus grandifolia var. mexicana. MycoKeys 27: 77-94. https://doi.org/10.3897/mycokeys.27.21326
Figure 6 - Laccaria trichodermophora, a basidiospores b pleurocystidia c basidia d pileipellis e cheilocystidia a–e Montoya 4393. Scale bars: 5 µm (a); 10 µm (b–c, e); 25 µm (d).
Figure 3 from: Ramos A, Bandala VM, Montoya L (2017) A new species and a new record of Laccaria (Fungi, Basidiomycota) found in a relict forest of the endangered Fagus grandifolia var. mexicana. MycoKeys 27: 77-94. https://doi.org/10.3897/mycokeys.27.21326
Figure 3 - Laccaria squarrosa, lamellae attachment and habit. a, c DM 121 b DM 63 (holotype) d DM 93. Scale bars: 10 mm.
Figure 5 from: Ramos A, Bandala VM, Montoya L (2017) A new species and a new record of Laccaria (Fungi, Basidiomycota) found in a relict forest of the endangered Fagus grandifolia var. mexicana. MycoKeys 27: 77-94. https://doi.org/10.3897/mycokeys.27.21326
Figure 5 - Laccaria squarrosa, a–b basidiospores under SEM c–f details of the pileipellis c–d cutis (arrow indicating scales) e–f details of the pileipellis scales c–f DM 63 (holotype). Scale bars: 5 µm (a); 2 µm (b); 100 µm (c); 20 µm (d); 50 µm (e–f).
Figure 4 from: Ramos A, Bandala VM, Montoya L (2017) A new species and a new record of Laccaria (Fungi, Basidiomycota) found in a relict forest of the endangered Fagus grandifolia var. mexicana. MycoKeys 27: 77-94. https://doi.org/10.3897/mycokeys.27.21326
Figure 4 - Laccaria squarrosa, a basidiospores b pleurocystidia c cheilocystidia d basidia a, c DM 121 b DM 63 (holotype) d DM 93. Scale bars: 5 µm (a); 10 µm (b–d).
Figure 2 from: Ramos A, Bandala VM, Montoya L (2017) A new species and a new record of Laccaria (Fungi, Basidiomycota) found in a relict forest of the endangered Fagus grandifolia var. mexicana. MycoKeys 27: 77-94. https://doi.org/10.3897/mycokeys.27.21326
Figure 2 - Laccaria squarrosa, basidiomes. a, b habit c, d pileus surface details a, c DM 121 b DM 63 (holotype) d DM 93. Scale bars: 10 mm.
Figure 1 from: Ramos A, Bandala VM, Montoya L (2017) A new species and a new record of Laccaria (Fungi, Basidiomycota) found in a relict forest of the endangered Fagus grandifolia var. mexicana. MycoKeys 27: 77-94. https://doi.org/10.3897/mycokeys.27.21326
Figure 1 - Phylogenetic relationships within Laccaria species inferred from the combined ITS and LSU sequence data by maximum likelihood method. Tree with the highest log likelihood (–4163.7219), the percentage of trees in which the associated taxa clustered together (only values ≥ 70% are considered) is shown next to the branches, followed by the posterior probabilities (only values ≥ 0.90 are indicated) obtained after Bayesian inference. The tree is drawn to scale, with branch lengths measured in the number of substitutions per site.
Figure 7 from: Ramos A, Bandala VM, Montoya L (2017) A new species and a new record of Laccaria (Fungi, Basidiomycota) found in a relict forest of the endangered Fagus grandifolia var. mexicana. MycoKeys 27: 77-94. https://doi.org/10.3897/mycokeys.27.21326
Figure 7 - Laccaria trichodermophora, a–b basidiospores under SEM c–d pileipellis a, c–d Montoya 4393 b Bandala 4282. Scale bars: 1 µm (a–b); 50 µm (c); 25 µm (d).
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.