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507 results for “symbionts”
Figure 7 in Re-discovery and novel contributions to morphology and multigene phylogeny of Myxophyllum steenstrupi (Ciliophora: Pleuronematida), an obligate symbiont of terrestrial pulmonates
Figure 7. Phylogenetic tree based on the mitochondrial COI nucleotide sequences, showing the systematic position of M. steenstrupi isolated from the plaited door snail Cochlodina laminata. The class Colpodea was used as the outgroup. Bootstrap values for maximum likelihood conducted in IQTrees as well as posterior probabilities for Bayesian inferences conducted in MrBayes and Phycas were mapped onto the best scoring IQ tree. Dash indicates mismatch between maximum likelihood and Bayesian tree topologies. Sequences marked in red were obtained during this study. Fully statistically supported nodes are marked with red solid circles. GenBank accession numbers can be found in Supporting Information (Table S3). The scale bar denotes twenty substitutions per one hundred nucleotide positions.
Data from: Development of common leaf-footed bug pests depends on the presence and identity of their environmentally-acquired symbionts
<p>Many beneficial symbioses between bacteria and their terrestrial arthropod hosts are vertically transmitted from mother to offspring, ensuring the progeny acquire necessary partners. Unusually, in several families of coreoid and lygeoid bugs (Hemiptera), nymphs must instead ingest the beneficial symbiont, <i>Burkholderia </i>(<i>sensu lato</i>), from the environment early in development. We studied the effects of <i>Burkholderia</i> on development of two species of leaf-footed bug (Coreidae) in the genus <i>Leptoglossus, L. zonatus</i> and <i>L. phyllopus.</i> We found no evidence for vertical transmission of the symbiont, but found stark differences in performance between symbiotic and aposymbiotic individuals. Symbiotic nymphs grew more rapidly, were approximately four times more likely to survive to adulthood than aposymbiotic bugs, and were two times larger. These findings suggest that <i>Burkholderia</i> is an obligate symbiont for <i>Leptoglossus </i>species. We also tested for variation in fitness effects conferred by four symbiont isolates representing different species within <i>Burkholderia</i>'s insect-associated Stinkbug Beneficial and Environmental (SBE) clade. While three isolates conferred similar benefits to hosts, nymphs associated with the fourth isolate grew more slowly and weighed significantly less as adults. The effects of the four isolates were similar for both <i>Leptoglossus</i> species. This work indicates that both <i>Burkholderia </i>acquisition and isolate identity play critical roles in the growth and development of <i>Leptoglossus.</i></p> <p>Importance</p> <p><i>Leptoglossus zonatus</i> and <i>L. phyllopus</i> are important polyphagous pests and both species have been well-studied, but generally without regard to their dependance on a bacterial symbiont. Our results indicate that the central role of <i>Burkholderia</i> in the biology of these insects, as well as in other leaf-footed bugs, should be considered in future studies of coreid life history, ecology and pest management.<i> </i>Our work suggests acquisition of <i>Burkholderia</i> is critical for the growth and development of <i>Leptoglossus </i>species<i>. </i>Further, we found that there was variation in performance outcomes according to symbiont identity, even among members of the Stinkbug Beneficial and Environmental clade. This suggests that although environmental acquisition of a symbiont can provide extraordinary flexibility in partner associations, it also carries a risk if the partner is sub-optimal.</p>
FIGURE 2 in Calyptraeotheres sp. nov. (Crustacea: Decapoda: Pinnotheridae), symbiont of the slipper shell Crepidula striolata Menke, 1851 (Mollusca: Gastropoda: Calyptraeidae) from the Gulf of California, Mexico
FIGURE 2. Calyptraeotheres camposi sp. nov. A, B, holotype female (EMU-10361); C, D, paratype immature female (EMU- 10363); E, mature female paratype (EMU-10364). A, C, right cheliped, outer view; B, E, tip of cheliped, inner view; D, right chela, inner view. Scale bar = 0.5 mm.
FIGURE 1 in Calyptraeotheres sp. nov. (Crustacea: Decapoda: Pinnotheridae), symbiont of the slipper shell Crepidula striolata Menke, 1851 (Mollusca: Gastropoda: Calyptraeidae) from the Gulf of California, Mexico
FIGURE 1. Calyptraeotheres camposi sp. nov. A, B, E, F, H, holotype female (EMU-10361); D, G, I, paratype immature female (EMU-10363); C, paratype mature female (EMU-10364). A, carapace, dorsal view; B, partial frontal view; C, dorsal view; D, carapace, dorsal view; E, third maxilliped, inner view; F, same, outer view; G, third maxilliped, inner view; H, abdomen, dorsal view; I, abdomen, dorsal view. Scale bars = A–D, H, I, 1 mm, E, F, G, 0.5 mm.
Metagenomic and metatranscriptomics data for Bathymodiolus mussel and deep-sea sponge associated symbionts deposited in NCBI, IMG and other databases
<p>Metagenomic data for the sulfur- and methane-oxidizing symbionts of <em>Bathymodiolus</em> mussels and different sponge species deposited in the Integrated Microbial Genomes (IMG) database of the DOE Joint Genome Institute (http://img.jgi.doe.gov/) and NCBI until October 2018</p>
Data from: Widespread extinctions of co-diversified gut bacterial symbionts from humans
<p><span>Humans and other primates harbour complex gut bacterial communities that influence health and disease, but the evolutionary histories of these symbioses remain unclear due to a lack of information about the state of the microbiota in ancestral primates. Here we show that hundreds of gut bacterial lineages co-diversified with primate species over millions of years, but that nearly half of these ancestral symbionts have been lost from humans. Analyses of thousands of metagenome-assembled genomes from humans, chimpanzees, bonobos, and other non-human primates revealed significant co-diversification within ten gut bacterial phyla. Remarkably, 44% of the co-diversifying clades detected in African apes were absent from available human metagenomic data. In contrast, only ~3% of the clades displaying the weakest evidence for co-diversification and detected in African apes were absent from humans. This study identifies bacterial symbioses that predate hominid diversification, revealing accelerated extinctions of ancestral, co-diversifying symbionts from human populations. </span></p>
The Symbiont-Restore Study
ClinicalTrials.gov study NCT05942586. IPD Sharing: NO. Countries: 1. Publications: 6.
Genetic structure in a cnidarian symbiont is correlated with geographic location, environment, and host species
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Data from: Widespread extinctions of co-diversified gut bacterial symbionts from humans
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The impacts of host association and perturbation on symbiont fitness
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Data from: Social behavior in bees influences the abundance of Sodalis (Enterobacteriaceae) symbionts
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Data from: Fungal symbiont effects on dune plant diversity depend on precipitation
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Quantitative trait locus analysis of parasitoid counteradaptation to symbiont-conferred resistance
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Data from: Disease epidemiology in arthropods is altered by the presence of non-protective symbionts
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Data from: Saprotrophic and ectomycorrhizal fungal sporocarp stoichiometry (C : N : P) across temperate rainforests as evidence of shared nutrient constraints among symbionts
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Data from: Development of common leaf-footed bug pests depends on the presence and identity of their environmentally-acquired symbionts
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Data from: The many faced symbiotic snakelocks anemone (Anemonia viridis, Anthozoa): host and symbiont genetic differentiation among colour morphs
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Strong genotype-by-genotype interactions between aphid-defensive symbionts and parasitoids persist across different biotic environments
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Data from: Differential aphid toxicity to ladybeetles is not a function of host plant or facultative bacterial symbionts
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Data from: Effect of plant root symbionts on performance of native woody species in competition with an invasive grass in multispecies microcosms
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Allen Brain Atlas
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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.