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160 results for “endosymbiont”
Figure 6 in Wolbachia endosymbionts distort DNA barcoding in the parasitoid wasp genus Diplazon (Hymenoptera: Ichneumonidae)
Figure 6. Bayesian majority-rule consensus tree of the Wolbachia surface protein (wsp) sequences of isolates from nine species of Diplazontinae parasitic wasps. Strains separated by molecular cloning in Escherichia coli were given arbitrary numbers. Values next to nodes represent Bayesian posterior probabilities.
Figure 5 in Wolbachia endosymbionts distort DNA barcoding in the parasitoid wasp genus Diplazon (Hymenoptera: Ichneumonidae)
Figure 5. Bayesian majority-rule consensus tree as retrieved from the internal transcribed spacer 2 rRNA. The Diplazon species are shown in different colours. Support values close to the nodes represent Bayesian posterior probabilites and the bootstrap support based on 1000 replicates. The branch leading to Diplazon albotibialis and Diplazon pectoratorius has been shortened to fit on a single page.
Figure 4 in Wolbachia endosymbionts distort DNA barcoding in the parasitoid wasp genus Diplazon (Hymenoptera: Ichneumonidae)
Figure 4. Scatterplot of isometric size versus the first shape principle component of the species pair Diplazon deletus–Diplazon flixi. PC, principal component.
Figure 1 in Wolbachia endosymbionts distort DNA barcoding in the parasitoid wasp genus Diplazon (Hymenoptera: Ichneumonidae)
Figure 1. Bayesian majority-rule consensus tree as retrieved from the barcoding fragment of COI mtDNA. Support values close to the nodes represent Bayesian posterior probabilites and bootstrap support based on 1000 replicates. Inlaid photographs show specimens of some of the unresolved species. Part of the tree was cut at the triangle and moved to the left to fit on a single page.
Figure 2 in Wolbachia endosymbionts distort DNA barcoding in the parasitoid wasp genus Diplazon (Hymenoptera: Ichneumonidae)
Figure 2. Numbers of species recovered and identity of lumped species as obtained by the threshold method for three different threshold values. Distances are uncorrected pairwise distances in the CO1 barcoding locus.
The soil microbiome increases plant survival and modifies interactions with root endosymbionts in the field
<p>Evidence is accumulating that the soil microbiome—the community of microorganisms living in soils—has a major effect on plant traits and fitness. However, most work to date has taken place under controlled laboratory conditions and has not experimentally disentangled the effect of the soil microbiome on plant performance from the effects of key endosymbiotic constituents. As a result, it is difficult to extrapolate from existing data to understand the role of the soil microbiome in natural plant populations. To address this gap, we performed a field experiment using the black medick Medicago lupulina to test how the soil microbiome influences plant performance and colonization by two root endosymbionts (the mutualistic nitrogen-fixing bacteria Ensifer spp. and the parasitic root-knot nematode Meloidogyne hapla) under natural conditions. We inoculated all plants with nitrogen-fixing bacteria and factorially manipulated the soil microbiome and nematode infection. We found that plants grown in microbe-depleted soil exhibit greater mortality, but that among the survivors there was no effect of the soil microbiome on plant performance (shoot biomass, root biomass, or shoot-to-root ratio). The soil microbiome also impacted parasitic nematode infection and affected colonization by mutualistic nitrogen-fixing bacteria in a plant genotype-dependent manner, increasing colonization in some plant genotypes and decreasing it in others. Our results demonstrate the soil microbiome has complex effects on plant-endosymbiont interactions and may be critical for survival under natural conditions.</p>
Data for: Variation in density, immune gene suppression, and co-infection outcomes among strains of the aphid endosymbiont Regiella insecticola
<p>Many insects harbor heritable microbes that influence host phenotypes. Symbiont strains establish at different densities within hosts. This variation is important evolutionarily because within-host density has been linked to the costs and benefits of the symbiosis for both partners. Studying the factors shaping within-host density is important to our broader understanding of host-microbe coevolution. Here we focused on different strains of <em>Regiella insecticola</em>, a facultative symbiont of aphids. We first showed that strains of <em>Regiella</em> establish in pea aphids at drastically different densities. We then found that variation in density is correlated with the expression levels of two key insect immune system genes (phenoloxidase and hemocytin), with the suppression of immune gene expression correlating with higher <em>Regiella</em> density. We then performed an experiment where we established co-infections of a higher- and a lower-density <em>Regiella</em> strain, and we showed that the higher-density strain is better able to persist in co-infections than the lower-density strain. Together, our results point to a potential mechanism that contributes to strain-level variation in symbiont density in this system, and our data suggest that symbiont fitness may be increased by establishing at higher density within hosts. Our work highlights the importance of within-host dynamics shaping symbiont evolution.</p>
Data for manuscript "Coral endosymbiont growth is enhanced by metabolic interactions with bacteria"
<p>Data and scripts related to the manuscript "Coral endosymbiont growth is enhanced by metabolic interactions with bacteria" by Matthews et al. 2023</p>
Data from: Feminizing Wolbachia endosymbiont disrupts maternal sex chromosome inheritance in a butterfly species
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Data from: A facultative endosymbiont in aphids can provide diverse ecological benefits
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Data from: Host-specialist lineages dominate the adaptive radiation of reef coral endosymbionts
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Data from: The Rickettsia endosymbiont of Ixodes pacificus contains all the genes of de novo folate biosynthesis
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Endosymbionts facilitate rapid evolution in a polyphagous herbivore
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Data from: Camponotus floridanus ants incur a trade-off between phenotypic development and pathogen susceptibility from their mutualistic Endosymbiont Blochmannia
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Data from: Macroevolutionary persistence of heritable endosymbionts: acquisition, retention, and expression of adaptive phenotypes in Spiroplasma
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Data from: Ecologically differentiated, stress tolerant endosymbionts in the dinoflagellate genus Symbiodinium (Dinophyceae) Clade D are different species.
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Data from: Bacterial endosymbiont infections in ‘living fossils’: a case study of North American vaejovid scorpions
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Data for: Variation in density, immune gene suppression, and co-infection outcomes among strains of the aphid endosymbiont Regiella insecticola
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The soil microbiome increases plant survival and modifies interactions with root endosymbionts in the field
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Microbiome reduction and endosymbiont gain from a switch in sea urchin life-history
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