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124 results for “de novo genome”
Data from: A de novo chromosome-level genome assembly of Coregonus sp. “Balchen”: one representative of the Swiss Alpine whitefish radiation
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De novo genome assembly of the Tobacco Hornworm moth (Manduca sexta)
<p><strong>We present the new reference genome for M sexta, JHU_Msex_v1.0, applying a combination of modern technologies in a de novo assembly to increase continuity, accuracy, and completeness. The assembly is 470 Mb and is ~25x more continuous than the original assembly, with scaffold N50 >14 Mb. We annotated the assembly by lifting over existing annotations and supplementing with additional supporting RNA-based data for a total of 25,256 genes. The new reference assembly is accessible in annotated form for public use.</strong></p>
Elevated temperature increases genome-wide selection on de novo mutations
<p>Adaptation in new environments depends on the amount of genetic variation available for evolution, and the efficacy by which natural selection discriminates among this variation. However, whether some ecological factors reveal more genetic variation, or impose stronger selection pressures than others, is typically not known. Here, we apply enzyme kinetic theory to show that rising global temperatures are predicted to intensify natural selection throughout the genome by increasing the effects of DNA sequence variation on protein stability. We test this prediction by i) estimating temperature-dependent fitness effects of induced mutations in seed beetles adapted to ancestral or elevated temperature, ii) calculate 100 paired selection estimates on mutations in benign versus stressful environments from unicellular and multicellular organisms. Environmental stress per se did not increase mean selection on de novo mutation, suggesting that the cost of adaptation does not generally increase in new ecological settings to which the organism is maladapted. However, elevated temperature increased the mean strength of selection on genome-wide polymorphism, signified by increases in both mutation load and mutational variance in fitness. These results have important implications for genetic diversity gradients and the rate and repeatability of evolution under climate change.</p>
de novo genome assembly of the LNCaP human prostate cancer cell line
<p>Whole-genome sequencing reads from the LNCaP human prostate cancer cell line were used to generate a <em>de novo </em>assembly with SGA v0.10.15. Please see https://github.com/sciseim/PCaWGS for associated scripts. Library preparation was performed using a TruSeq Nano DNA kit (Illumina) with a target insert size of 350bp. Paired-end libraries (150bp) were sequenced using a HiSeqX sequencer (Illumina).</p>
de novo genome assembly of the PC3 human prostate cancer cell line
<p>Whole-genome sequencing reads from the PC3 human prostate cancer cell line were used to generate a <em>de novo </em>assembly with SGA v0.10.15. Please see https://github.com/sciseim/PCaWGS for associated scripts. Library preparation was performed using a TruSeq Nano DNA kit (Illumina) with a target insert size of 350bp. Paired-end libraries (150bp) were sequenced using a HiSeqX sequencer (Illumina).</p> <p> </p> <p> </p> <p> </p>
Supporting data for: The de novo genome of the Black-necked Snakefly (Venustoraphidia nigricollis Albarda, 1891): A resource to study the evolution of living fossils
<p>Snakeflies (Raphidioptera) are the smallest order of holometabolous insects that have kept their distinct and name-giving appearance since the Mesozoic, probably since the Jurassic, and possibly even since their emergence in the Carboniferous, more than 300 million years ago. Despite their interesting nature and numerous publications on their morphology, taxonomy, systematics, and biogeography, snakeflies have never received much attention from the general public, and only a few studies were devoted to their molecular biology. Due to this lack of molecular data, it is therefore unknown, if the conserved morphological nature of these living fossils translates to conserved genomic structures. Here, we present the first genome of the species and of the entire order of Raphidioptera. The final genome assembly has a total length of 669 Mbp and reached a high continuity with an N50 of 5.07 Mbp. Further quality controls also indicate a high completeness and no meaningful contamination. The newly generated data was used in a large-scaled phylogenetic analysis of snakeflies using shared orthologous sequences. Quartet score and gene-concordance analyses revealed high amounts of conflicting signals within this group that might speak for substantial incomplete lineage sorting and introgression after their presumed re-radiation after the asteroid impact 66 million years ago. Overall, this reference genome will be a door-opening dataset for many future research applications, and we demonstrated its utility in a phylogenetic analysis that provides new insights into the evolution of this group of living fossils.</p>
De novo genome assembly of rice varieties using Nanopore long reads
<p>Genome sequences for Sugimura et al. (2024) of the rice (O. sativa) varieties 'Hitomebore' and 'Arroz da Terra.'</p> <p>Yusaku Sugimura, Kaori Oikawa, Yu Sugihara, Hiroe Utsushi, Eiko Kanzaki, Kazue Ito, Yumiko Ogasawara, Tomoaki Fujioka, Hiroki Takagi, Motoki Shimizu, Hiroyuki Shimono, Ryohei Terauchi, Akira Abe. Impact of rice GENERAL REGULATORY FACTOR14h (GF14h) on low-temperature seed germination and its application to breeding. PLoS Genet 20(8): e1011369. https://doi.org/10.1371/journal.pgen.1011369</p> <p>bioRxiv doi: https://doi.org/10.1101/2024.02.16.580620</p>
Chromosome-scale genome assembly and de novo annotation of Alopecurus aequalis.
<p><em>Alopecurus aequalis</em> is a winter annual or short-lived perennial bunchgrass which has in recent years emerged as the dominant agricultural weed of barley and wheat in certain regions of China and Japan, causing significant yield losses. Its robust tillering capacity and high fecundity, combined with the development of both target and non-target-site resistance to herbicides means it is a formidable challenge to food security. Here we report on a chromosome-scale assembly of <em>A. aequalis</em> with a genome size of 2.83 Gb. The genome contained 33,758 high-confidence protein-coding genes with functional annotation. Comparative genomics revealed that the genome structure of <em>A. aequalis</em> is more similar to <em>Hordeum vulgare </em>rather than the more closely related <em>Alopecurus myosuroides</em>. The datasets provided here are the assembly FASTA file (lpAloAequ1.1.prim.cur.20230912.fasta.gz), the high-confidence protein-coding genes (Alaeq_EIv0.2.release_HC_genes.gff3.gz) and the full annotation which includes both low and high confidence features of all biotypes (Alaeq_EIv0.2.release.gff3.gz) </p>
Data From: Oatk - a de novo assembly tool for complex plant organelle genomes
<p>This reposity hosts the data for 195 plant organelle genome assemblies generated in the manuscript "Oatk: a de novo assembly tool for complex plant organelle genomes". The sequence data were produced by the Tree of Life programme at the Sanger Institute, mostly from the Darwin Tree of Life (DToL) project, including 24 monocots, 154 eudicots, 16 mosses and one liverwort. See SAMPLE_LIST file for descriptions of these species.</p> <p>In each species subfolder, below files are included.</p> <ol> <li><code>PLTD.fasta</code> Plastome assembly file in FASTA format</li> <li><code>PLTD.annot.bed</code> Plastome assembly annotation file in BED format</li> <li><code>MITO.fasta</code> Mitogenome assembly file in FASTA format</li> <li><code>MITO.annot.bed</code> Mitogenome assembly annotation file in BED format</li> <li><code>MBG.gfa</code> Genome assembly file in GFA format generated with MBG</li> <li><code>PMAT.gfa</code> Genome assembly file in GFA format generated with OATK</li> <li><code>OATK.gfa</code> Genome assembly file in GFA format generated with PMAT (may not exist)</li> </ol> <p> </p> <p>Updates in the New Version:</p> <p>In the previous version, our raw PacBio HiFi read pre-processing pipeline had screened out some reads that it erroneously thought contained HiFi adapter sequence, which led to the gaps in the Hibiscus plastomes. We now fixed this and have rerun all the assemblies that led to any linear organelle components (37 species). All plastomes remain unchanged except for the three Hibiscuses, which are now also circular. Thirteen mitogenomes changed, with six of them now becoming circular.</p>
Tspe_v1 (Telopea speciosissima) genome supplementary files for: Chromosome-level de novo genome assembly of Telopea speciosissima (New South Wales waratah) using long-reads, linked-reads and Hi-C
<p><i>Telopea speciosissima, </i>the New South Wales waratah, is an Australian endemic woody shrub in the family Proteaceae. Waratahs have great potential as a model clade to better understand processes of speciation, introgression and adaptation, and are significant from a horticultural perspective. Here, we report the first chromosome-level genome for <i>T. speciosissima</i>. Combining Oxford Nanopore long-reads, 10x Genomics Chromium linked-reads and Hi-C data, the assembly spans 823 Mb (scaffold N50 of 69.0 Mb) with 97.8 % of Embryophyta BUSCOs 'Complete'. We present a new method in Diploidocus (<a href="https://github.com/slimsuite/diploidocus">https://github.com/slimsuite/diploidocus</a>) for classifying, curating and QC-filtering scaffolds, which combines read depths, <i>k</i>-mer frequencies and BUSCO predictions. We also present a new tool, DepthSizer (<a href="https://github.com/slimsuite/depthsizer">https://github.com/slimsuite/depthsizer</a>), for genome size estimation from the read depth of single-copy orthologues and estimate the genome size to be approximately 900 Mb. The largest 11 scaffolds contained 94.1 % of the assembly, conforming to the expected number of chromosomes (2<i>n</i> = 22). Genome annotation predicted 40,158<code> </code>protein-coding genes, 351 rRNAs and 728 tRNAs. We investigated <i>CYCLOIDEA </i>(<i>CYC</i>)<i> </i>genes, which have a role in determination of floral symmetry, and confirm the presence of two copies in the genome. Read depth analysis of 180 'Duplicated' BUSCO genes using a new tool, DepthKopy (<a href="https://github.com/slimsuite/depthkopy">https://github.com/slimsuite/depthkopy</a>), suggests almost all are real duplications, increasing confidence in the annotation and highlighting a possible need to revise the BUSCO set for this lineage. The chromosome-level <i>T. speciosissima</i> reference genome (Tspe_v1) provides an important new genomic resource of Proteaceae to support the conservation of flora in Australia and further afield.</p>
De novo assembly of 20 chicken genomes reveals the undetectable phenomenon for thousands of core genes on micro-chromosomes and sub-telomeric regions
<p>The gene numbers and evolutionary rates of birds were assumed to be much lower than those of mammals, which is in sharp contrast to the huge species number and morphological diversity of birds. It is therefore necessary to construct a complete avian genome and analyze its evolution. We constructed a chicken pan-genome from 20 <em>de novo</em> assembled genomes with high sequencing depth, and identified 1,335 protein-coding genes and 3,011 long noncoding RNAs not found in GRCg6a. The majority of these novel genes were detected across most individuals of the examined transcriptomes but were seldomly measured in each of the DNA sequencing data regardless of Illumina or PacBio technology. Furthermore, different from previous pan-genome models, most of these novel genes were overrepresented on chromosomal sub-telomeric regions and micro-chromosomes, surrounded by extremely high proportions of tandem repeats, which strongly blocks DNA sequencing. These hidden genes were proved to be shared by all chicken genomes, included many housekeeping genes, and enriched in immune pathways. Comparative genomics revealed the novel genes had three-fold elevated substitution rates than known ones, updating the knowledge about evolutionary rates in birds. Our study provides a framework for constructing a better chicken genome, which will contribute towards the understanding of avian evolution and improvement of poultry breeding.</p>
De novo genome assembly of Kallima inachus
<p><span>Oakleaf butterflies in the genus <em>Kallima</em> have a polymorphic wing phenotype, enabling these insects to masquerade as dead leaves. By studying mechanisms that shape the genetic and species diversity of these butterflies, a new perspective can be provided to understand the evolutionary innovation driven by geographic changes and natural selection.</span></p> <p><span>We found that leaf wing polymorphism in <em>Kallima</em> butterflies is controlled by the wing patterning gene cortex. We hypothesized that multiple mechanisms may independently lead to the reduction or suppression of recombination among different cortex haplotypes. To test this hypothesis, w</span>e performed Nanopore re-sequencing and <em>de novo</em> genome assembly for 4 <em>Kallima inachus</em> individuals and obtained 4 individual genomes. We identified two chromosomal inversions spanning these haplotypes.</p>
Elevated temperature increases genome-wide selection on de novo mutations
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Tspe_v1 (Telopea speciosissima) genome supplementary files for: Chromosome-level de novo genome assembly of Telopea speciosissima (New South Wales waratah) using long-reads, linked-reads and Hi-C
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De novo genome assembly of Kallima inachus
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Supporting data for: The de novo genome of the Black-necked Snakefly (Venustoraphidia nigricollis Albarda, 1891): A resource to study the evolution of living fossils
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De novo genome assembly of human cell line CHM13 nanopore ultra-long reads using Shasta
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De novo genome assembly of Tectona grandis (Teak) with 2993 scaffolds
<p>Teak (<em>Tectona grandis</em> L. f.) is one of the precious bench mark tropical hardwood having qualities of durability, strength and visual pleasantries. Natural teak populations harbour a variety of characteristics that determine their economic, ecological and environmental importance. Sequencing of whole nuclear genome of teak provides a platform for functional analyses and development of genomic tools in applied tree improvement. A draft genome of 317 Mb was assembled at 151× coverage and annotated 36, 172 protein-coding genes. Approximately about 11.18% of the genome was repetitive. Microsatellites or simple sequence repeats (SSRs) are undoubtedly the most informative markers in genotyping, genetics and applied breeding applications. We generated 182,712 SSRs at the whole genome level, of which, 170,574 perfect SSRs were found; 16,252 perfect SSRs showed <em>in silico</em> polymorphisms across six genotypes suggesting their promising use in genetic conservation and tree improvement programmes. Genomic SSR markers developed in this study have high potential in advancing conservation and management of teak genetic resources. Phylogenetic studies confirmed the taxonomic position of the genus <em>Tectona</em> within the family Lamiaceae. Interestingly, estimation of divergence time inferred that the Miocene origin of the <em>Tectona</em> genus to be around 21.4508 million years ago.</p>
Data from: "De novo transcriptome assembly of the mountain fly Drosophila nigrosparsa using short RNA-seq reads" in Genomic Resources Notes Accepted 1 August 2014-30 September 2014
Drosophila (Drosophila) nigrosparsa is a habitat specialist restricted to the European montane/alpine zone (Bächli 2008). Mountain biodiversity is considered highly vulnerable to ongoing climate warming (IPCC 2013), and organisms at high altitudes have only limited possibility to shift to cooler habitats at elevations above (Pertoldi & Bach 2007). For such species, rapid evolution may offer a solution for long-term survival. We are establishing D. nigrosparsa as a model system to test the extent and tempo of adaptive evolution under thermal stress in the laboratory. In this study, we used Illumina high-throughput sequencing to assemble the species' transcriptome using the pooled mRNA from 22 developmental and physiological stages.
Data from: "De novo assembly transcriptome for the rostrum dace (Leuciscus burdigalensis, Cyprinidae: fish) naturally infected by a copepod ectoparasite" in Genomic Resources Notes accepted 1 December 2014 to 31 January 2015
The emergence of pathogens represents substantial threats to public health, livestock, domesticated animals, and biodiversity. How wild populations respond to emerging pathogens has generated a lot of interest in the last two decades. With the recent advent of high-throughput sequencing technologies it is now possible to develop large transcriptomic resources for non-model organisms, hence allowing new research avenues on the immune responses of hosts from a large taxonomic spectra. We here focused on a wild population of the rostrum dace (Leuciscus burgiladensis) that is infected by Tracheliastes polycolpus, an emerging freshwater ectoparasite copepod. We used next generation Illumina sequencing technology to sequence the transcriptome of eight L. burdigalensis adult individuals collected in natura from the same sampling site. Four individuals were non-infected and four individuals were infected by T. polycolpus. We specifically focused on the spleen, the head kidney and epithelial cells and mucus from the fins, three tissues known to be involved in the immune response of fish. We used the Trinity methodology to reconstruct a de novo full-length transcriptome for L. burdigalensis. The resulting transcriptome will serve as an important broad-scale genomic resource for further studying the response of local population of L. burdigalensis to T. polycolpus pressures.
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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.