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49 results for “pathogenic fungi”
Global Cluster Test Results: Pathogenic Fungi in Decayed Norway Spruce Stands
<p><strong>Accessing the Results:</strong> Users can retrieve the test results by opening the dataset <code>Global_cluster_test_results.RData</code> in an R session and using the functions inside the script of the same name.</p> <p><strong>Description: </strong>This dataset provides global cluster test results analyzing the spatial distribution of pathogenic fungi in 273 Norway spruce stands in Norway (Lara et al., 2024). The stands, composed mainly of Norway spruce (27% to 100%), also include Scots pine and birch. It focuses on spatial patterns of decayed spruce trees, offering p-values, clustering metrics, and other parameters from statistical analyses.</p> <p><strong>Analysis:</strong> The dataset includes results from three global cluster tests (Tango, 2010):</p> <ul> <li>Tango's Nearest Neighbors (TNN)</li> <li>Tango's Double Exponential Clinal (TCN)</li> <li>Diggle and Chetwynd’s (DC)</li> </ul> <p><strong>Methodology:</strong> Cluster testing employed 1,000 Monte Carlo simulations for each test across all stands to establish null distributions and adjusted p-values, ensuring robust statistical assessments under the random labeling hypothesis: H0: the observed n0 decayed trees are a random sample from the entire sample of size n = n0 + n1 (decayed trees + healthy trees) (Tango, 2010).</p> <p> </p>
Dataset from the analysis of biological activity of endophytic strain Serratia quinivorans KP32, the expression of biocontrol-related genes and the activity of antioxidant enzymes in bacterial cells treated with pathogenic fungi filtrates
<p>This dataset contains the data from the analyses published in the article entitled "Genetic Determinants of Antagonistic Interactions and the Response of New Endophytic Strain <i>Serratia quinivorans</i> KP32 to Fungal Phytopathogens" in the International Journal of Molecular Sciences (https://doi.org/10.3390/ijms232415561). The data consist of results collected for studies on the antifungal activity of KP32 strain towards four fungal phytopathogens, results of primer efficiency determination and studies on the expression of genes potentially involved in biocontrol after treatment of KP32 strain with the fungal phytopathogens filtrates. Additionally, absorbances from activity tests for catalase (CAT) and superoxide dismutase (SOD) in the strain treated with fungal pathogens are included.</p>
Ant handling changes myrmecochore seed coat microbiomes and alters diversity of seed-borne plant pathogenic fungi
<p>The putative benefits to seeds in myrmecochory (ant-mediated seed dispersal) are often cast in a reward context. However, microbes have been mostly overlooked as seed mortality agents in myrmecochory, as have potential treatments provided by ant-handling. We investigated the effects of ant handling on the diversity of seed coat fungal communities of three myrmecochorous plant species. Ant-handling altered measures of both alpha and beta diversity of fungal communities. Ant-handled seeds harbored different overall fungal communities and plant pathogen communities than non-ant-handled seeds. The myrmecochore pathogenic fungal community showed high dissimilarity (high pairwise community turnover) between ant-handled and control seeds, while beta diversity measures for ant-handled seeds and seeds with manually-removed elaiosomes were less dissimilar. Ant handling may offer an additional benefit to myrmecochorous seeds via the reduction of the seed coat pathogenic community, which may be driven by elaiosome removal or as a byproduct of ant cleaning behaviors and chemical secretions. </p>
Fig. 2 in Theromyzon maculosum (Rathke, 1862) as a vector of potentially pathogenic fungi in aquatic ecosystems
Fig. 2. Pseudomycelium (marked as PS) and blastospores (marked as BL) of Candida albicans isolated from the river Czarna Ha´ncza in the microculture on the Nickerson agar (magn. 400x).
Fig. 5 in Theromyzon maculosum (Rathke, 1862) as a vector of potentially pathogenic fungi in aquatic ecosystems
Fig. 5. Pseudomycelium (marked as PS) and blastospores (marked as BL) of Candida tropicalis isolated from the integument of the leech Theromyzon maculosum in the microculture on the Nickerson agar (magn. 400x).
Fig. 4 in Theromyzon maculosum (Rathke, 1862) as a vector of potentially pathogenic fungi in aquatic ecosystems
Fig. 4. Pseudomycelium (marked as PS) and blastospores (marked as BL) of Candida tropicalis isolated from the river Czarna Ha´ncza in the microculture on the Nickerson agar (magn. 600x).
Ant handling changes myrmecochore seed coat microbiomes and alters diversity of seed-borne plant pathogenic fungi
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Fig. 1 in Theromyzon maculosum (Rathke, 1862) as a vector of potentially pathogenic fungi in aquatic ecosystems
Fig. 1. Species diversity of yeast-like fungi in different environments.
Neighboring trees regulate the root-associated pathogenic fungi on the host plant in a subtropical forest
<p>Root-associated fungi and host-specific pathogens are major determinants of species coexistence in forests. Phylogenetically related neighboring trees can strongly affect the fungal community structure of the host plant, which, in turn, will affect the ecological processes. Unfortunately, our understanding of the factors influencing fungal community composition in forests is still limited. In particular, investigation of the relationship between the phytopathogenic fungal community and neighboring trees is incomplete. In the current study, we tested the host specificity of members of the root-associated fungal community collected from seven tree species and determined the influence of neighboring trees and habitat variation on the composition of the phytopathogenic fungal community of the focal plant in a subtropical evergreen forest. Using high-throughput sequencing data with respect to the internal transcribed spacer (ITS) region, we characterized the community composition of the root-associated fungi and found significant differences with respect to fungal groups among the seven tree species. The density of conspecific neighboring trees had a significantly positive influence on the relative abundance of phytopathogens, especially host-specific pathogens, while the heterospecific neighbor density had a significant negative impact on the species richness of host-specific pathogens, as well as phytopathogens. Our work provides evidence that the root-associated phytopathogenic fungi of a host plant depends greatly on the tree neighbors of the host plant.</p>
Data from: Comparative genomics of pathogenic and nonpathogenic beetle-vectored fungi in the genus Geosmithia
Geosmithia morbida is an emerging fungal pathogen which serves as a model for examining the evolutionary processes behind pathogenicity because it is one of two known pathogens within a genus of mostly saprophytic, beetle-associated, fungi. This pathogen causes thousand cankers disease in black walnut trees and is vectored into the host via the walnut twig beetle. G. morbida was first detected in western US and currently threatens the timber industry concentrated in eastern US. We sequenced the genomes of G. morbida in a previous study and two non-pathogenic Geosmithia species in this work and compared these species to other fungal pathogens and nonpathogens to identify genes under positive selection in Geosmithia morbida that may be associated with pathogenicity. Geosmithia morbida possesses one of the smallest genomes among the fungal species observed in this study, and one of the smallest fungal pathogen genomes to date. The enzymatic profile in this pathogen is very similar to its non-pathogenic relatives. Our findings indicate that genome reduction or retention of a smaller genome may be an important adaptative force during the evolution of a specialized lifestyle in fungal species that occupy a specific niche, such as beetle vectored tree pathogens. We also present potential genes under selection in G. morbida that could be important for adaptation to a pathogenic lifestyle.
FIGURES 1–8 in New Mycodiplosis gall midge (Diptera: Cecidomyiidae) feeding on fungal rusts (Fungi: Pucciniomycetes) that are pathogenic on cultured plants
FIGURES 1–8. Mycodiplosis puccinivora. Male. (1) occipital protuberance on head dorsally, (2) 3rd flagellomere (3) mouth parts, (4) fore claw, (5) mid claw, (6) hind claw, (7) terminalia dorsally, (8) terminalia ventrally.
FIGURES 19–27 in New Mycodiplosis gall midge (Diptera: Cecidomyiidae) feeding on fungal rusts (Fungi: Pucciniomycetes) that are pathogenic on cultured plants
FIGURES 19–27. Mycodiplosis puccinivora feeding on fungal rust Maravalia pterocarpi infesting leaves of Dalbergia tonkinensis. 19–20: adult, 21: egg, 22–24: larva, 25–27: pupa. (19) female, (20) male, (21) egg on leaf surface, (22) mature larva spinning cocoon on leaf surface, (23) larvae feeding on uredinia, (24) larvae feeding on uredinia, arows indiacte larave in the distance, (25) young pupa, (26) mature pupa, (27) pupal exhiviae anchored in cocoon following emergence of adult. Fig. 24 is from Wang et al. (2017).
FIGURES 14–18. Mycodiplosis puccinivora. 14–17 in New Mycodiplosis gall midge (Diptera: Cecidomyiidae) feeding on fungal rusts (Fungi: Pucciniomycetes) that are pathogenic on cultured plants
FIGURES 14–18. Mycodiplosis puccinivora. 14–17: larva, 18: pupal exhuviae. (14) head in dorsal view, (15) sternal spatula with adjacent papillae, (16) terminal segment in dorsal view, (17, 18) habitus.
FIGURES 9–13 in New Mycodiplosis gall midge (Diptera: Cecidomyiidae) feeding on fungal rusts (Fungi: Pucciniomycetes) that are pathogenic on cultured plants
FIGURES 9–13. Mycodiplosis puccinivora. Female. (9) 3rd flagellomere, (10) wing, (11) hypoproct ventrally, (12) postabdomen from 7th segment to end dorsally, (13) postabdomen from 7th segment to end laterally.
Figure 1 in Leaf-mining beetles carry plant pathogenic fungi amongst hosts
Figure 1. (A) A pandanus tree (Pandanus boninensis, height: 1.5–2.0 m), a species endemic to the Ogasawara Islands. (B) A leaf mined by Phylloplatypus pandani. (C) Phylloplatypus pandani using the entrance hole of a mine. (D) Phylloplatypus pandani within a mine. Scale bars represent 1.0 mm.
Azole Susceptibility and Resistance Mechanisms Surveys in Pathogenic Fungi by the CARST-fungi (2023-2024)
ClinicalTrials.gov study NCT06969703. IPD Sharing: YES. Countries: 1. Publications: 2.
Herbivory meets fungivory: insect herbivores feed on plant pathogenic fungi for their own benefit
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Data from: Comparative genomics of pathogenic and nonpathogenic beetle-vectored fungi in the genus Geosmithia
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Neighboring trees regulate the root-associated pathogenic fungi on the host plant in a subtropical forest
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Supplementary material 6 from: Wang Y, Tsui K-M, Chen S, You C (2024) Diversity, pathogenicity and two new species of pestalotioid fungi (Amphisphaeriales) associated with Chinese Yew in Guangxi, China. MycoKeys 102: 201-224. https://doi.org/10.3897/mycokeys.102.113696
Nucleotide differences between the isolates in this study
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International Brain Laboratory public data
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OpenNeuro
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