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.
143
datasets available to search
ShareScore release 0.9.0
Dataset results
143 results for “DNA extract”
Data from: “Direct PCR” optimization yields a rapid, cost-effective, non-destructive, and efficient method for obtaining DNA barcodes without DNA extraction
Open the record for dataset details and reuse information.
Data from: Comparative analysis of DNA extraction methods to study the body surface microbiota of insects: a case study with ant cuticular bacteria
Open the record for dataset details and reuse information.
Data from: Modified low-salt CTAB extraction of high-quality DNA from contaminant rich tissues
Open the record for dataset details and reuse information.
Data from: Choice of capture and extraction methods affect detection of freshwater biodiversity from environmental DNA
Open the record for dataset details and reuse information.
Data from: Extracting DNA from ‘jaws’: high yield and quality from archived tiger shark (Galeocerdo cuvier) skeletal material
Open the record for dataset details and reuse information.
Data from: HyRAD-X, a versatile method combining exome capture and RAD sequencing to extract genomic information from ancient DNA
Open the record for dataset details and reuse information.
Data from: Trace DNA from insect skins: a comparison of five extraction protocols and direct PCR on chironomid pupal exuviae
Open the record for dataset details and reuse information.
Utilizing field collected insects for next generation sequencing: effects of sampling, storage, and DNA extraction methods
Open the record for dataset details and reuse information.
Data from: Optimizing techniques to capture and extract environmental DNA for detection and quantification of fish
Few studies have examined capture and extraction methods for environmental DNA (eDNA) to identify techniques optimal for detection and quantification. In this study, precipitation, centrifugation and filtration eDNA capture methods and six commercially available DNA extraction kits were evaluated for their ability to detect and quantify common carp (Cyprinus carpio) mitochondrial DNA using quantitative PCR in a series of laboratory experiments. Filtration methods yielded the most carp eDNA, and a glass fibre (GF) filter performed better than a similar pore size polycarbonate (PC) filter. Smaller pore sized filters had higher regression slopes of biomass to eDNA, indicating that they were potentially more sensitive to changes in biomass. Comparison of DNA extraction kits showed that the MP Biomedicals FastDNA SPIN Kit yielded the most carp eDNA and was the most sensitive for detection purposes, despite minor inhibition. The MoBio PowerSoil DNA Isolation Kit had the lowest coefficient of variation in extraction efficiency between lake and well water and had no detectable inhibition, making it most suitable for comparisons across aquatic environments. Of the methods tested, we recommend using a 1.5 μm GF filter, followed by extraction with the MP Biomedicals FastDNA SPIN Kit for detection. For quantification of eDNA, filtration through a 0.2–0.6 μm pore size PC filter, followed by extraction with MoBio PowerSoil DNA Isolation Kit was optimal. These results are broadly applicable for laboratory studies on carps and potentially other cyprinids. The recommendations can also be used to inform choice of methodology for field studies.
Data from: DNA extraction method affects the detection of a fungal pathogen in formalin-fixed specimens using qPCR
Museum collections provide indispensable repositories for obtaining information about the historical presence of disease in wildlife populations. The pathogenic amphibian chytrid fungus Batrachochytrium dendrobatidis (Bd) has played a significant role in global amphibian declines, and examining preserved specimens for Bd can improve our understanding of its emergence and spread. Quantitative PCR (qPCR) enables Bd detection with minimal disturbance to amphibian skin and is significantly more sensitive to detecting Bd than histology; therefore, developing effective qPCR methodologies for detecting Bd DNA in formalin-fixed specimens can provide an efficient and effective approach to examining historical Bd emergence and prevalence. Techniques for detecting Bd in museum specimens have not been evaluated for their effectiveness in control specimens that mimic the conditions of animals most likely to be encountered in museums, including those with low pathogen loads. We used American bullfrogs (Lithobates catesbeianus) of known infection status to evaluate the success of qPCR to detect Bd in formalin-fixed specimens after three years of ethanol storage. Our objectives were to compare the most commonly used DNA extraction method for Bd (PrepMan, PM) to Macherey-Nagel DNA FFPE (MN), test optimizations for Bd detection with PM, and provide recommendations for maximizing Bd detection. We found that successful detection is relatively high (80–90%) when Bd loads before formalin fixation are high, regardless of the extraction method used; however, at lower infection levels, detection probabilities were significantly reduced. The MN DNA extraction method increased Bd detection by as much as 50% at moderate infection levels. Our results indicate that, for animals characterized by lower pathogen loads (i.e., those most commonly encountered in museum collections), current methods may underestimate the proportion of Bd-infected amphibians. Those extracting DNA from archived museum specimens should ensure that the techniques they are using are known to provide high-quality throughput DNA for later analysis.
Data from: More than skin and bones: comparing extraction methods and alternative sources of DNA from avian museum specimens
Next-generation sequencing has greatly expanded the utility and value of museum collections by revealing specimens as genomic resources. As the field of museum genomics grows, so does the need for extraction methods that maximize DNA yields. For avian museum specimens, the established method of extracting DNA from toe pads works well for most specimens. However, for some specimens, especially those of birds that are very small or very large, toe pads can be a poor source of DNA. In this study, we apply two DNA extraction methods (phenol-chloroform and silica column) to three different sources of DNA (toe pad, skin punch, and bone) from ten historical avian museum specimens. We show that a modified phenol-chloroform protocol yielded significantly more DNA than a silica column protocol (e.g., Qiagen DNeasy Blood & Tissue Kit) across all tissue types. However, extractions using the silica column protocol contained longer fragments on average than those using the phenol-chloroform protocol, likely a result of loss of small fragments through the silica column. While toe pads yielded more DNA than skin punches and bone fragments, skin punches proved to be a reliable alternative source of DNA and might be especially appealing when toe pad extractions are impractical. Overall, we found that historical bird museum specimens contain substantial amounts of DNA for genomic studies under most extraction scenarios, but that a phenol-chloroform protocol consistently provides the high quantities of DNA required for most current genomic protocols.
Data from: Preservation-induced morphological change in salamanders and failed DNA extraction from a decades-old museum specimen: implications for Plethodon ainsworthi
<p>Natural history collections are important data repositories, but different chemical treatments of specimens can influence morphological measurements and DNA extraction, complicating taxonomic and conservation decisions dependent upon these data. One such example is the Bay Springs Salamander (<i>Plethodon ainsworthi</i>), the only United States amphibian categorized as Extinct by the IUCN.<i> </i>Recent research has proposed that <i>P. ainsworthi </i>is an invalid taxon, arguing that the 55-year-old type specimens' morphological distinctiveness from syntopic <i>P. mississippi</i> is a preservation artifact. To address this controversy, we tested for morphological changes across five experimental treatments in proxy <i>P. shermani</i> specimens, and we re-examined the datasets used to support the invalidity of <i>P. ainsworthi</i>. We also tested recently developed DNA extraction techniques on the putatively formalin-fixed <i>P. ainsworthi</i> holotype. We used Bayesian models to demonstrate that preservation method can differentially bias morphological measurements, with most methods causing lower estimates of mass and modestly higher estimates of snout-vent-length:head width ratio. These results are broadly consistent with previous studies of other vertebrates, but inconsistent with the hypothesis that <i>P. ainsworthi </i>type specimens are actually poorly preserved <i>P. mississippi</i>. Attempts to extract DNA from the <i>P. ainsworthi</i> holotype unfortunately proved unsuccessful, preventing conclusive resolution of its status and emphasizing the limitations of promising new methods. Nonetheless, we tentatively recommend continued recognition of <i>P. ainsworthi</i> as a valid but possibly extinct taxon. More generally, we invite all authors who study preserved specimens to recognize and report how certain chemical treatments might impact their results.</p>
Supplementary material 1 from: Bernardes SC, von Rintelen T, Alexander S, Lorenz F, von Rintelen K (2023) Assessing 'non-destructive' DNA extraction method in small crustaceans kept in wet collections. Research Ideas and Outcomes 9: e113299. https://doi.org/10.3897/rio.9.e113299
Supplementary Table S1
Supplementary material 3 from: Bernardes SC, von Rintelen T, Alexander S, Lorenz F, von Rintelen K (2023) Assessing 'non-destructive' DNA extraction method in small crustaceans kept in wet collections. Research Ideas and Outcomes 9: e113299. https://doi.org/10.3897/rio.9.e113299
Supplementary Figure S2
Supplementary material 2 from: Bernardes SC, von Rintelen T, Alexander S, Lorenz F, von Rintelen K (2023) Assessing 'non-destructive' DNA extraction method in small crustaceans kept in wet collections. Research Ideas and Outcomes 9: e113299. https://doi.org/10.3897/rio.9.e113299
Supplementary Figure S1
Supplementary material 2 from: Van den Bulcke L, De Backer A, Ampe B, Maes S, Wittoeck J, Waegeman W, Hostens K, Derycke S (2021) Towards harmonization of DNA metabarcoding for monitoring marine macrobenthos: the effect of technical replicates and pooled DNA extractions on species detection. Metabarcoding and Metagenomics 5: e71107. https://doi.org/10.3897/mbmg.5.71107
Tables S1–S8
Supplementary material 1 from: Van den Bulcke L, De Backer A, Ampe B, Maes S, Wittoeck J, Waegeman W, Hostens K, Derycke S (2021) Towards harmonization of DNA metabarcoding for monitoring marine macrobenthos: the effect of technical replicates and pooled DNA extractions on species detection. Metabarcoding and Metagenomics 5: e71107. https://doi.org/10.3897/mbmg.5.71107
Figures S1–S14
Supplementary material 1 from: Marquina D, Roslin T, Łukasik P, Ronquist F (2022) Evaluation of non-destructive DNA extraction protocols for insect metabarcoding: gentler and shorter is better. Metabarcoding and Metagenomics 6: e78871. https://doi.org/10.3897/mbmg.6.78871
Community types
Supplementary material 6 from: Marquina D, Roslin T, Łukasik P, Ronquist F (2022) Evaluation of non-destructive DNA extraction protocols for insect metabarcoding: gentler and shorter is better. Metabarcoding and Metagenomics 6: e78871. https://doi.org/10.3897/mbmg.6.78871
16S MOTU table
Supplementary material 7 from: Marquina D, Roslin T, Łukasik P, Ronquist F (2022) Evaluation of non-destructive DNA extraction protocols for insect metabarcoding: gentler and shorter is better. Metabarcoding and Metagenomics 6: e78871. https://doi.org/10.3897/mbmg.6.78871
Tables and figures
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.