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40 results for “transgression”
Collection of graphs presenting gene expression for transgressively down-regulated genes in fins.
<p>Transgressive gene expression was assessed for Cottus lineager of hybrid origing, compared to its parental species. Data contains graphs illustrating gene expression for genes classified af transgressively down-regulated in fin tissues.</p>
Model output for Chester et al. (2024): On the origin of Holocene sea-level transgressions in formerly glaciated regions
<p>Model output files and post-processing/plotting scripts for Chester et al. (2024, QSR). </p> <p>This repository contains:</p> <p>Files for reproducing figures:</p> <ol> <li> hingeline_tracker_zenodo.m. This code takes GIA model output and identifies the hinge line for a given transect following Chester et al. (2024) (e.g. Figures 4-6). </li> <li> transgression_magnitude_id_loop_zenodo.m. This code takes GIA model output and identifies and magnitude of a transgression and timing of the highstand for a given region (e.g. Figures 9, 10 and 12 in Chester et al., 2024). </li> </ol> <p>Zip files with GIA model output in .mat form:</p> <ol> <li>LN-SL_ICE7G_100km_plusBestFitting.zip: output from the LN-SL model with the ICE7G reconstruction, a 100 km lithosphere, and the mantle viscosities indicated in Table 1. The folder also includes the output from the two best-fitting simulations used to create Figures 9 and 10 in Chester et al. (2024). </li> <li>LN-NO_ICE7G_100km.zip: output from the LN-NO model with the ICE7G reconstruction, a 100 km lithosphere and the mantle viscosities indicated in Table 1. </li> <li>FN-NO_discload.zip: output from simulations with the FN-NO model. The model was run with the disc load ice sheet and the Earth structures indicated in Table 1. </li> </ol> <p>For GIA model runs with different parameter combinations please contact me at schester@ldeo.columbia.edu. </p> <p>Note on file labeling: 'rsl_ice7g.l60CC.ump1.lm10.mat' translates to, ice model: ICE7G, lithospheric thickness: 60 km, upper mantle viscosity: 0.1 * 10^21 Pa s, lower mantle viscosity: 10 * 10^21 Pa s. </p> <p> </p> <p> </p>
Hybrid incompatibilities and transgressive gene expression between two closely related subspecies of Drosophila
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Data from: Ecological novelty by hybridization: experimental evidence for increased thermal tolerance by transgressive segregation in Tigriopus californicus
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Data from: Isolation, marine transgression, and translocation of the bare-nosed wombat (Vombatus ursinus)
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Data from: Transgressive physiological and transcriptomic responses to light stress in allopolyploid Glycine dolichocarpa (Leguminosae)
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Transgressing Wallace´s Line brings hyperdiverse weevils down to earth
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Hybridization and transgressive exploration of colour pattern and wing morphology in Heliconius butterflies
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Data from: The effect of hybrid transgression on environmental tolerance in experimental yeast crosses
Evidence is rapidly accumulating that hybridization generates adaptive variation. Transgressive segregation in hybrids could promote the colonization of new environments. Here, we use an assay to select hybrid genotypes that can proliferate in environmental conditions beyond the conditions tolerated by their parents, and we directly compete them against parental genotypes in habitats across environmental clines. We made 45 different hybrid swarms by crossing yeast strains (both Saccharomyces cerevisiae and S. paradoxus) with different genetic and phenotypic divergence. We compared the ability of hybrids and parents to colonize seven types of increasingly extreme environmental clines, representing both natural and novel challenges (mimicking pollution events). We found that a significant majority of hybrids had greater environmental ranges compared to the average of both their parents' ranges (mid-parent transgression), but only a minority of hybrids had ranges exceeding their best parent (best-parent transgression). Transgression was affected by the specific strains involved in the cross and by the test environment. Genetic and phenotypic crossing distance predicted the extent of transgression in only two of the seven environments. We isolated a set of potentially transgressive hybrids selected at the extreme ends of the clines and found that many could directly outcompete their parents across whole clines and were between 1.5- and 3-fold fitter on average. Saccharomyces yeast is a good model for quantitative and replicable experimental speciation studies, which may be useful in a world where hybridization is becoming increasingly common due to the relocation of plants and animals by humans.
Data from: Genetic mapping shows intraspecific variation and transgressive segregation for caterpillar-induced aphid resistance in maize
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Data from: The effect of hybrid transgression on environmental tolerance in experimental yeast crosses
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Transgressive and parental dominant gene expression and cytosine methylation during seed development in Brassica napus hybrids [Bisulfite-seq]
GEO Series GSE202609. Brassica napus. 22 samples. Type: Methylation profiling by high throughput sequencing.
Environmental dependent heterosis and transgressive gene expression in reciprocal hybrids between the channel catfish Ictalurus punctatus and the blue catfish Ictalurus furcatus
GEO Series GSE186603. Ictalurus punctatus x Ictalurus furcatus; Ictalurus furcatus; Ictalurus punctatus. 8 samples. Type: Expression profiling by high throughput sequencing.
Transgressive and parental dominant gene expression and cytosine methylation during seed development in Brassica napus hybrids [miRNA-seq]
GEO Series GSE202608. Brassica napus. 33 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Data from: Hybridization can promote adaptive radiation by means of transgressive segregation
Understanding the mechanisms of rapid adaptive radiation has been a central problem of evolutionary ecology. Recently, there is a growing recognition that hybridization between different evolutionary lineages can facilitate adaptive radiation by creating novel phenotypes. Yet, theoretical plausibility of this hypothesis remains unclear because, for example, hybridization can negate pre-existing species richness. Here, we theoretically investigate whether and under what conditions hybridization promotes ecological speciation and adaptive radiation by using an individual-based model to simulate genome evolution following hybridization between two allopatrically evolved lineages. The model demonstrated that transgressive segregation through hybridization can facilitate adaptive radiation, most powerfully when novel vacant ecological niches are highly dissimilar, phenotypic effect size of mutations is small, and there is moderate genetic differentiation between parental lineages. These results provide a theoretical basis for the effect of hybridization facilitating adaptive radiation.
Data from: Hybridization can promote adaptive radiation by means of transgressive segregation
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Transgressive and parental dominant gene expression and cytosine methylation during seed development in Brassica napus hybrids [RNA-seq]
GEO Series GSE202607. Brassica napus. 33 samples. Type: Expression profiling by high throughput sequencing.
Transgressive and parental dominant gene expression and cytosine methylation during seed development in Brassica napus hybrids
GEO Series GSE202610. Brassica napus. 88 samples. Type: Expression profiling by high throughput sequencing; Non-coding RNA profiling by high throughput sequencing; Methylation profiling by high throughput sequencing.
Haldane’s rule in the developing brain: X-linked and imprinted genes contribute to male-biased transgressive expression in hybrid mice
GEO Series GSE311072. Mus spretus; Mus musculus domesticus x Mus spretus; Mus musculus domesticus. 89 samples. Type: Expression profiling by high throughput sequencing.
Allele specific expression and gene regulation help explain transgressive thermal tolerance in non-native hybrids of the endangered California tiger salamander (Ambystoma californiense)
GEO Series GSE137607. Ambystoma californiense. 99 samples. Type: Expression profiling by high throughput sequencing.
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