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140 results for “mycorrhizal fungi”
Weathering by mycorrhizal fungi defines a threshold for nutrients in ecosystems along an aridity gradient - Dataset
<p>Dataset for the Statistical Analysis of Hyphal-Covered Mineral Pellets.<br>This dataset originates from a two-year (2016 to 2018) research project conducted in Chile, spanning locations from Nahuelbuta to Pan de Azúcar (Atacama Desert). It includes detailed records of hyphal growth observed on mineral pellets. Comprehensive descriptions of all methods and data will be available in an upcoming journal publication (DOI will be announced soon).</p>
FIGURES 1–9. Acaulospora fanjing spores. 1. Intact spores. 2. Crushed spore. 3–6 in Acaulospora fanjing (Glomeromycota), a new species of arbuscular mycorrhizal fungi from Fanjingshan in China
FIGURES 1–9. Acaulospora fanjing spores. 1. Intact spores. 2. Crushed spore. 3–6. Spore wall layers (SW+MW+IW), SWL1 smooth, hyaline and evanescent and completely shed; SWL2 and SWL3 laminate and similar color, in some spores the boundaries between layers are difficult to distinguish; Middle wall (MWLl–MWL2) hyaline, semiflexible bilayered tightly adherent; Inner wall (IWL1–IWL3) hyaline, consists of three layers. Note: MW and IW are easily separated in PVLG and IWL2 shows a pale pink reaction to Melzer's reagent. 7–8. Cicatrix circular to subcircular, slightly raised collar. 9. Mycorrhizal structures of A.fanjing in roots of Trifolium repens stained in 0.1% Trypan blue: hyphae (H) and vesicles (V). 3, 4, 6. In Melzer's. 5. In PVLG+Melzer's reagent.
Figure 10 in Acaulospora fanjing (Glomeromycota), a new species of arbuscular mycorrhizal fungi from Fanjingshan in China
Figure 10. MrBayes and RAxML phylogram inferred from SSU-ITS-LSU sequence data. The Bayesian Analysis (BA) and Maximum Likelihood (ML) trees show the same phylogenetic topology, with A.fanjing as a new species that belongs to the genus Acaulospora. The tree is rooted with Claroideoglomus claroideum. Posterior probalities (>0.50) and maximum likelihood support values (>50) are showed on each branch (PP/MP). The new species is in bold.
Data from: Negative effects of phosphorus addition override positive effects of arbuscular mycorrhizal fungi on grassland temporal stability
<p>The temporal stability of a plant community in a native grassland ecosystem is affected substantially by soil nitrogen (N) and phosphorus (P) enrichment. However, the interactions between N and P inputs and arbuscular mycorrhizal fungi (AMF) and their effects on the temporal stability of plant productivity have not yet been clarified. In this study, we combined a three-year <em>in situ</em> field experiment with a worldwide meta-analysis to assess the effects of soil fertilisation and AMF on the temporal stability of plant productivity. The addition of P decreased the stability of plant productivity as the standard deviation of plant productivity was increased directly and the temporal stability of C<sub>3</sub> grasses was decreased. However, there was no relationship between species richness and the stability, and of plant productivity, rather the stability of the dominant functional group and asynchrony among functional groups were the main drivers changing the stability of change in plant productivity. In both the site-specific experimental data analysis and worldwide meta-analysis, the negative effects of P addition overrode the positive effects of AMF on the temporal stability of plant communities. Overall, our study highlights the importance of soil nutrient availability over AMF in terms of shaping the temporal stability of a plant community. Our results also suggest that anthropogenic soil nutrient enrichment might reduce the temporal stability of plant communities in grassland environments regardless of the existence of AMF.</p>
Dataset associated with: Increasing presence of non-native plants and arbuscular mycorrhizal fungi during a 10-year survey along subarctic mountains roads
<p>Roads in cold climate mountains are known to be important vectors in the introduction and spread of non-native plant species. In the same context, mycorrhizal fungi communities are also altered by roads with a known positive effect on arbuscular mycorrhizal (AM) fungi diversity and abundance in disturbed roadsides. However, to what degree these two effects of roads are intertwined and how they are evolving over time is not well understood. In this study we conducted repeated surveys of non-native plants and AM fungi between 2012 and 2022, in the northern Scandes mountains to investigate temporal changes and interactions between roads, mycorrhizal fungi, and non-native plants. We found that the upward spread of non-native plants and lateral spread away from the roadside into the natural vegetation were so far extremely limited, with only two out of 23 non-native species showing an increase in their upper elevational limit. However, non-native plant species cover did increase over the ten year period, especially at lower elevations, and non-native richness increased from 17 to 23 species. Likewise, we saw an increase in AM fungal abundance over the last four years along the roadsides at lower elevations. Furthermore, our results suggest that increases in non-native species are unlikely to be the driving cause of the observed increase in AM fungal abundance, as AM fungi colonization varied independently of non-native species cover dynamics. </p> <p>This is the associated datasets and R-code. Check out the ReadMe.txt-file for information on the different files.</p>
Lotus2 on Mycorrhizal Fungi in the Galaxy Training Network - Example Run Output
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The association of mycorrhizal fungi with mature tree growth is stronger in high nitrogen soils for an EMF tree and in low nitrogen for two AMF trees
<p>Soil and microbial data for the manuscript: </p> <p><strong><span>The association of mycorrhizal fungi with mature tree growth is stronger in high nitrogen soils for an EMF tree and in low nitrogen for two AMF trees</span></strong></p>
Data from: Stable isotope signatures of underground seedlings reveal the organic matter gained by adult orchids from mycorrhizal fungi
1.Orchids produce dust seeds dependent on the provision of organic carbon by mycorrhizal fungi for their early development stages. Hence, all chlorophyllous orchids experience a dramatic switch in trophic strategies from initial mycoheterotrophy to either autotrophy or partial mycoheterotrophy during ontogeny. Yet, the degree to which partially mycoheterotrophic orchids gain carbon from their mycorrhizal fungi is unclear based on existing approaches. 2.Here, we propose a novel approach to quantify the fungal-derived organic matter gain of chlorophyllous mature orchids mycorrhizal with rhizoctonia fungi using the stable isotope signatures of their fully mycoheterotrophic (FMH) seedlings in a linear two-source mixing model. 3.We conducted a field germination experiment with seven orchid species and measured carbon, nitrogen and hydrogen stable isotope natural abundances and nitrogen concentrations of mature orchids, underground seedlings and autotrophic references. 4.After in situ burial for 19 – 30 months, germination rates varied considerably among five orchid species and failed for two. On average, underground seedlings were enriched in 13C and 15N relative to mature orchids and had higher nitrogen concentrations. Using the mean enrichment factors ε13C and ε2H of seedlings as FMH endpoint, the organic matter gain derived by mature orchids from mycorrhizas was ca. 20%. 5.Chlorophyllous orchids mycorrhizal with rhizoctonias are predisposed to partially mycoheterotrophic nutrition due to their initially mycoheterotrophic seedling stage. We show that the carbon and hydrogen isotope abundances of underground seedlings can be used in an improved mixing-model to identify a significant proportion of fungal-derived organic matter in mature orchids.
Data for: Implications of plant N/P stoichiometry influenced by arbuscular mycorrhizal fungi for stability of plant species and community in response to nutrient limitation
<p>Arbuscular mycorrhizal fungi (AMF) influence plant nitrogen/phosphorus (N/P) by modifying plant N and P uptake, which further affects plant stoichiometric N/P homeostasis. Plant species and community stoichiometric N/P homeostasis can impact plant species and community stability, respectively, in response to variations of soil N and P availabilities. We investigated interspecific plant interactions via AMF in regard to plant and soil microbial N/P stoichiometry across different soil N and P availabilities induced by N and P addition (0 mg N kg<sup>-1</sup>, 25 mg N kg<sup>-1</sup>, 50 mg N kg<sup>-1</sup>, 30 mg P kg<sup>-1</sup>, and 100 mg P kg<sup>-1</sup>). We selected one dominant (<em>Bothriochloa ischaemum</em>; C4 grass) and one subordinate (<em>Lespedeza davurica</em>; legume) species in a natural grassland climax community. We examined how AMF influences stoichiometric N/P homeostasis in monoculture and mixed culture systems, and the resulting consequences for temporal stability of plant species and community in response to variations in soil N and P availability.</p> <p>The AMF mitigated the P limitation of soil microbial communities and decreased the degree of stoichiometric N/P homeostasis of host plants in monoculture. Through their resource-scavenging and soil organic matter mineralisation functions, AMF enhances plant 'luxury consumption', promoting species stability in monoculture in response to soil N and P availability variations. Compared with plants in monoculture, the interaction between <em>B. ischaemum</em> and <em>L. davurica</em> via AMF increased shoot N/P under soil N-poor conditions, leading to an enhanced degree of stoichiometric N/P homeostasis in both plant species, especially the legume.</p> <p>Our results suggest that interspecific plant interaction between C4 grass and legume mediated by AMF confers an advantage in complementarity in plant N acquisition under N-poor conditions, leading to increased stability of plant communities and better maintenance of subordinate species (legume) in response to soil N deficiency.</p>
Modelling mycorrhizal fungi dispersal by the mycophagous swamp wallaby (Wallabia bicolor)
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Data from: Co-introduction of native mycorrhizal fungi and plant seeds accelerates restoration of post-mining landscapes
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Data from: Effects of arbuscular mycorrhizal fungi on aboveground tri-trophic interactions are contingent upon plant genetic effects of cross type in the perennial herb Ruellia nudiflora
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Data from: Germination patterns in three terrestrial orchids relate to abundance of mycorrhizal fungi
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Data for: Implications of plant N/P stoichiometry influenced by arbuscular mycorrhizal fungi for stability of plant species and community in response to nutrient limitation
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Data from: MycoDB, a global database of plant response to mycorrhizal fungi
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Data from: Multiple mutualist effects on genomewide expression in the tripartite association between Medicago truncatula, nitrogen-fixing bacteria and mycorrhizal fungi
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Dark septate endophytes and arbuscular mycorrhizal fungi (Paris-morphotype) affect the stable isotope composition of ‘classically’ non-mycorrhizal plants
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Data from: The plant microbiome and native plant restoration: the example of native mycorrhizal fungi
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Sympatric pairings of dryland grass populations, mycorrhizal fungi, and associated soil biota enhance mutualism and ameliorate drought stress
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Elevation gradients and soil characteristics shape arbuscular mycorrhizal fungi in the Indian mid-Himalaya
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Allen Brain Atlas
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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
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