Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
297
datasets available to search
ShareScore release 0.9.0
Dataset results
297 results for “stress tolerance”
Outdoor mesocosm study evaluating how mass, NaCl tolerance, and pesticide tolerance affect oxidative stress biomarkers (CAT, SOD, GR, GPx, TBARS) in larval wood frogs (Rana sylvatica) exposed to baseline and NaCl-contaminated conditions, 2019
Biomarkers of oxidative stress can aid in wildlife monitoring by allowing conservationists to detect sublethal environmental shifts. However, interpretation of stress responses can be complicated by multiple interacting factors (e.g., individual development, evolved physiological tolerance to stressors) which alter biomarker expression. Here, we investigated how individual ontogenetic traits and population-level tolerance traits influence oxidative stress responses under baseline and contaminated environmental conditions. For our model contaminant, we used NaCl (common freshwater contaminant due to factors such as coastal flooding, irrigation, airborne salt circulation, drought, runoff from road deicing salts). For our model wildlife populations, we used larval wood frogs (Rana sylvatica) from six noninteracting populations known to vary in two population-level tolerance traits: NaCl tolerance (calculated as average time to death from lethal NaCl exposure) and pesticide tolerance (determined by proxy of distance to agriculture - a consistent and highly repeatable relationship). At an outdoor research facility, R. sylvatica tadpoles were exposed to either baseline conditions (0 g/L NaCl added) or NaCl-contaminated conditions (1 g/L NaCl added for 21 days, then reduced to 0.5 g/L NaCl). Exposures were conducted in individual units with 40 replicates per population for each treatment. The experiment was terminated per individual to capture the full term of larval development (Developmental stage: Gosner stage 36), lasting between 33-48 days. For each individual, we measured mass, Snout-Vent-Length, and developmental stage before processing for biomarker expression. Individual homogenates were assayed for oxidative stress biomarkers superoxide dismutase (SOD; responsible for Reactive Oxygen Species capture and peroxide production), glutathione peroxidase (GPx; responsible for high-affinity peroxide reduction), catalase (CAT; responsible for low-affinity peroxide reducti
Drought increases microbial allocation to stress tolerance but with few tradeoffs among community-level traits
Climate change will increase soil drying, altering microbial communities via increasing water stress and decreasing resource availability. The responses of these microbial communities to changing environments is likely governed by physiological tradeoffs between high yield, resource acquisition, and stress tolerance (Y-A-S framework). We leveraged a unique field experiment that manipulates both drought and carbon availability across two years and three land uses, and we used both metagenomic and bioassay indicators of the three microbial community traits to test the following hypotheses: 1. Drought increases microbial allocation to stress tolerance functions, at the expense of growth and resource acquisition. 2. Because microbes are resource-limited under drought, increased carbon will enable greater expression of stress tolerance. 3. All three key life history traits described in the YAS framework will trade off, especially when resources are limited. Drought did increase microbial physiological investment in stress tolerance (measured via trehalose production), but we saw few other changes in microbial communities under drought. Carbon addition increased resource acquisition (measured via enzyme activity and resource acquisition gene abundance) and stress tolerance (trehalose assay), but did so in both drought and average rainfall environments. We found no evidence of trait tradeoffs, as we found no significant negative correlations between traits (measured via bioassay and metagenomics). In summary, we found C addition, and to a lesser extent, drought, both altered microbial community function and functional genes. However, resources did not alter drought response in a way that was consistent with theory of life history tradeoffs.
Biogeographic parallels in thermal tolerance and gene expression variation under temperature stress in a widespread bumble bee
<p>Global temperature changes have emphasized the need to understand how species adapt to thermal stress across their ranges. Genetic mechanisms may contribute to variation in thermal tolerance, providing evidence for how organisms adapt to local environments. We determine physiological thermal limits and characterize genome-wide transcriptional changes at these limits in bumble bees using laboratory-reared <em>Bombus vosnesenskii</em> workers. We analyze bees reared from latitudinal (35.7–45.7°N) and altitudinal (7–2154 m) extremes of the species' range to correlate thermal tolerance and gene expression among populations from different climates. We find that critical thermal minima (CT<sub>MIN</sub>) exhibit strong associations with local minimums at the location of queen origin, while critical thermal maximum (CT<sub>MAX</sub>) was invariant among populations. Concordant patterns are apparent in gene expression data, with regional differentiation following cold exposure, and expression shifts invariant among populations under high temperatures. Furthermore, we identify several modules of co-expressed genes that tightly correlate with critical thermal limits and temperature at the region of origin. Our results reveal that local adaptation in thermal limits and gene expression may facilitate cold tolerance across a species range, whereas high temperature responses are likely constrained, both of which may have implications for climate change responses of bumble bees.</p>
Data from: Stingless bee foragers experience more thermally stressful microclimates but have wider thermal tolerance breadths than other worker subcastes
<p>The current state of anthropogenic climate change is of particular concern for insects, especially in the tropics where the effects are predicted to be the most deleterious. Researching climatic tolerance in social insects is challenging because adaptations can exist at both an individual level and a societal level. However, these studies are important because social insects comprise a tremendous portion of the planet's animal biomass, biodiversity, and include many important pollinators. Considering how individual physiologies construct group-level adaptations can improve the accuracy of climate change impact assessments for a variety of social species. <em>Tetragonisca angustula</em> is a neotropical stingless bee species known to exhibit particularly high worker subcaste specialization in the form of a morphologically distinct soldier caste, a trait most commonly found and studied in ants and termites. We used this model species to investigate 1) whether age- and size-differentiated task groups differ in thermal tolerance, 2) which worker subcastes operate closest to their thermal limits, and 3) the extent to which behavioral thermoregulation via shifting active foraging times can offset thermal stress in this species. We measured the thermal tolerance (CT<sub>max</sub> and CT<sub>min</sub>) of smaller-bodied foragers, and two soldier sub-castes (hovering guards and standing guards) in <em>T. angustula</em>. Despite the difference in body size between the foragers and guards, no differences in the upper or lower thermal limits were observed. However, the average thermal tolerance breadth of foragers was significantly larger than that of guards, indicating that soldiers at the nest entrance are more thermally specialized than foragers. Temperatures at foraging sites were more variable than at nest entrances, which caused warming tolerance to be significantly lower among small-bodied foragers as compared to either hovering guards or standing guards. The magnitude of warming tolerances indicated a low risk of imminent climate change impacts in this environment, but our results suggest that as temperatures increase, foragers are likely to meet their upper thermal limits before other worker subcastes. Foragers may shift the times they are active as a form of thermoregulation which could selectively impact pollination rates for plants leading to repercussions on agriculture and ecosystem functioning. This work establishes novel approaches to predicting climatic change risk in heterogeneous cooperative societies.</p>
Food deprivation exposes sex-specific trade-offs between stress tolerance and lifespan in the copepod Tigriopus californicus
<p>Long life is standardly assumed to be associated with high stress tolerance. Previous work shows that the copepod <em>Tigriopus californicus</em> breaks this rule, with longer lifespan under benign conditions found in males, the sex with lower stress tolerance. Here we extended this previous work, raising animals from the same families in food-replete conditions until adulthood and then transferring them to food-limited conditions until all animals perished. As in previous work, survivorship under food-replete conditions favored males. However, under food deprivation lifespan strongly favored females in all crosses. Compared to benign conditions, average lifespan under nutritional stress was reduced by 47% in males but only 32% in females. Further, the sex-specific mitonuclear effects previously found under benign conditions were erased under food limited conditions. Results thus demonstrate that sex-specific lifespan, including mitonuclear interactions, are highly dependent on nutritional environment.</p>
Functional assembly of tropical montane tree islands in the Atlantic Forest is shaped by stress-tolerance, bamboo-presence and facilitation
<p><strong>Aims</strong>: Amidst the Campos de Altitude (Highland Grasslands) in the Brazilian Atlantic Forest, woody communities grow either clustered in tree islands or interspersed within the herbaceous matrix. The functional ecology, diversity and biotic processes shaping these plant communities are largely unstudied. We characterised the functional assembly and diversity of these tropical montane woody communities and investigated how they fit within Grime's CSR (C – competitor, S – stress-tolerant, R – ruderal) scheme, what functional trade-offs they exhibit and how traits and functional diversity vary in response to bamboo presence/absence.</p> <p><strong>Methods</strong>: To characterize the functional composition of the community, we sampled five leaf traits and wood density along transects covering the woody communities both inside tree islands and outside (i.e. isolated woody plants in the grasslands community) . Then, we used Mann Whitney test, t-test and variation partitioning to determine the effects of inside vs outside tree island and bamboo presence on community weighted means, woody species diversity and functional diversity.</p> <p><strong>Results</strong>: We found a general SC/S strategy with drought-related functional trade-offs. Woody plants in tree islands had more acquisitive traits than those within the grasslands. Trait variation was mostly taxonomically than spatially driven, and species composition varied between inside and outside tree islands. Leaf thickness, wood density and foliar water uptake were unrelated to CSR-strategies, suggesting independent trait dimensions and multiple drought-coping strategies within the predominant S-strategy. Islands with bamboo presence showed lower Simpson diversity, lower functional dispersion, lower foliar water uptake and greater leaf thickness than in tree islands without bamboo.</p> <p><strong>Conclusions</strong>: The observed functional assembly hints towards large-scale environmental abiotic filtering shaping stress-tolerant community strategy, and small-scale biotic interactions driving small-scale trait variation. We recommend experimental studies with fire, facilitation treatments, eco-physiological and recruitment traits to elucidate on tree island expansion and communities response to climate change.</p>
Determination of traits responding to iron toxicity stress at different stages and genome-wide association analysis for iron toxicity tolerance in rice (Oryza sativa L.)
<p>This vcf file constitute underlying raw data material for the manuscript "Determination of traits responding to iron toxicity stress at different stages and genome-wide association analysis for iron toxicity tolerance in rice (Oryza sativa L.)". <br> The SNP genotype data came from a whole-genome resequencing and were called using the Nipponbare IRGSP 1.0 rice reference genome. SNPs with a miss rate greater than 30% and minor allele frequency (MAF) less than 5% were removed. Heterozygous alleles were also excluded. Finally, 160,498 SNPs were selected and used in the GWAS analysis. </p>
Figure 3 in Response and tolerance mechanism of food crops under high temperature stress: a review
Figure 3. Process of development of heat-resistant cultivars. Identify heat-resistant genes from natural genetic resources through genome wide association mapping and then study the study how these genes are operated. Select those genes which are associated with various signaling pathways and then transform them into current germplasm.
Figure 1 in Response and tolerance mechanism of food crops under high temperature stress: a review
Figure 1. Schematic representation of most sensitive phase of various crops during high temperature stress.
Figure 1 in Antioxidant status and their enhancements strategies for water stress tolerance in chickpea
Figure 1. (a) Influence of exogenous application of osmoprotectants on crop growth rate (g m-2 day-1) of chickpea genotypes in Bahawalpur; (b) Influence of exogenous application of osmoprotectants on crop growth rate (g m-2 day-1) of chickpea genotypes in Cholistan. Whereas D1= well watered; D2= Drought at flowering+ pod formation + grain filling stage; D3= Drought at flowering stage; DAS, Days after sowing.
Data for: Effects of parental age on salt stress tolerance in an aquatic plant
<p>Parental age influences components of offspring fitness in many species. The ability to tolerate stress also affects fitness, but less is known regarding changes in offspring stress tolerance with increasing parental age, especially in plants. We examined first and fifth-born clonal offspring (using birth order as a proxy for parental age), and compared their fitness in several sub-lethal concentrations of salt (NaCl), to investigate the interactive effects of birth order and salt stress on the offspring of the aquatic plant <em>Lemna minor </em>L. We found that increasing salt concentration reduced reproduction particularly at early ages, which detrimentally affected fitness, as measured by the intrinsic rate of natural increase. Fifth offspring had greater fitness than first offspring, potentially due to the hump-shaped relationship between offspring fitness and birth order observed in other studies on <em>Lemna</em>, with fifth offspring near the peak of the hump. We found no interactive effect of birth order and salt concentration on offspring fitness; however, there were interactive effects on the time to first reproduction and the size of fronds. Specifically, first offspring exposed to increasing salt concentrations exhibited longer delays to first reproduction and grew to a greater size, while fifth offspring showed little change in either variable with increasing salt concentration. Thus, variation in birth order affected offspring response to salt stress, although not in terms of fitness. These results help illuminate factors impacting the age-specific strength of natural selection and stress responses, and may be environmentally relevant in the context of environmental salinization.</p>
Postrelease exploration and stress tolerance of landlocked and anadromous Atlantic salmon and their hybrids
<p><strong>Background</strong></p> <p>We studied postrelease explorative behavior and stress tolerance of Landlocked and anadromous Atlantic salmon and their hybrids. For the research, we hybridized the Landlocked salmon of Lake Saimaa with a Baltic anadromous salmon from River Kymijoki, Southern Finland (strain originally from River Neva, Russia). These fish were hybridized in November 2017 and October 2018 in the Kainuu Fisheries Research Station, Paltamo, Kainuu, Finland (kfrs.fi).<br><br>In the data the fish are treated as four strains (column 'Strain'): <strong>1.</strong> Purebred Landlocked salmon (LLxLL), <strong>2. </strong>hybrids, where the maternal population was landlocked salmon (LLxBA), <strong>3. </strong>hybrids, where the maternal population was Baltic anadromous salmon (BAxLL) and <strong>4. </strong>purebred Baltic anadromous salmon (BAxBA).</p> <p><strong>Experiment 1. Post-release exploration</strong></p> <p>In experiment 1., consisting of two separate trials, we studied post-release exploration of the fish in four circular seminatural streams. (Datasets 'Exploration2018.csv' & 'Exploration2020.csv', see also 'Figure_1.jpg')</p> <p><strong>Experiment 2. Stress tolerance</strong></p> <p>In experiment 2. we studied the stress response and recovery of the fish (Dataset 'Stress_BernoulliData.csv', see also 'Figure_2.jpg').</p>
GWAS analysis for tolerance to heat stress and milk production, in subtropical Egyptian goats
<p>The conservation of local Egyptian goat genotypes has been a national program since 2009. Our study investigated different subtropical Egyptian goat populations (367 does) from different harsh ecological zones(hot Upper Egypt, Coastal Zone of Western Desert, and Wahati Desert Oasis) to identify genes associated with heat stress. We examined the physiological response of animals that were exposed to simulated summer grazing conditions, and physiological parameters including respiration rate, gas volume, rectal temperature, and skin temperature. Temperature Humidity Index ranged from 98.6 to 109.3, indicating that the animals were under severe heat stress. Results showed significant differences between the populations in their tolerance to heat stress, with Saidi goats being the most adapted to hot-dry conditions. Respiration rate was found to be the most reliable physiological trait for differentiating between animals in their tolerance to heat stress. The GWAS analysis involved 157 genotypes and 54,032 marker-SNPs, revealing 90 SNPs associated with heat stress and 70 SNPs associated with milk production. Chromosome 1 had the highest number of SNPs associated with heat-stress traits, while chromosome 4 exhibited the largest number of significant SNPs associated with milk production. Several genes were associated with heat stress response and tolerance in goats. These genes were categorized into three main groups: heat stress response, stress response, and reproduction, and feed intake. The first group includes USP54, KDM6A, and ETNPPL, which have multiple functions, such as steroid biosynthesis, metabolism, and stress response, and are also involved in key biological processes such as reproduction, immune response, and metabolism. The second group, which is mostly associated with immune response, includes GLTSCR2 and NAALADL2. Finally, a group of genes that may control animal feed intakes, including TRPM3 and ZBTB8A. Additionally, several genes, such as FHIT, GALNT18, RAPGEF5, and RBFOX1, linked to milk production, are known to be linked fertility, and fatty acid composition. These findings provide insights into the potential roles of these genes in heat stress response and tolerance in goats, and the genetic basis for improved milk production and animal welfare and can be used as selection markers in the ongoing breeding programs.</p>
The raw microarray data and the differential expression analysis results from "Manipulating the growth environment through co-culture to enhance stress tolerance and viability of probiotic strains in the gastrointestinal tract".
<p>The signal data for each spot were subsequently quantified by using Feature Extraction software (Agilent Technologies).M1.txt to M5.txt: monoculture; C1.txt to C5.txt: co-culture; P1.txt to P5.txt: pH-controlled monoculture. The differential expression analysis results were obtained by using limma.</p>
Data from: Stingless bee foragers experience more thermally stressful microclimates and have wider thermal tolerance breadths than other worker subcastes
Open the record for dataset details and reuse information.
Data for: Clear effects of population and sex but not rearing temperature on stress tolerance in a temperate butterfly
Open the record for dataset details and reuse information.
Differences in gene expression between high and low tolerance rainbow trout (Oncorhynchus mykiss) to acute thermal stress
Open the record for dataset details and reuse information.
Postrelease exploration and stress tolerance of landlocked and anadromous Atlantic salmon and their hybrids
Open the record for dataset details and reuse information.
Functional assembly of tropical montane tree islands in the Atlantic Forest is shaped by stress-tolerance, bamboo-presence and facilitation
Open the record for dataset details and reuse information.
Food deprivation exposes sex-specific trade-offs between stress tolerance and lifespan in the copepod Tigriopus californicus
Open the record for dataset details and reuse information.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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
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.