Project description:We sequenced and assembled de novo the coding transcriptomes in four species of Notothenioid fish: Neopagetopsis ionah (Jonah’s ice fish), Pseudochaenichtys georgianus (South Georgia icefish), Harpagifer antarcticus (Antarctic spiny plunderfish) and Parachaenichthys charcoti (Charcot’s dragonfish). We sampled 1-4 individuals and 1-14 tissues (brain, white muscle, liver, head kidney, trunk kidney, skin, heart, red muscle, spleen, ovary, testis, whole blood, gill, red blood cells) in each species, depending on tissue availability.
Project description:Cotyledons and leaf transcriptomes of species of Salsoleae with different photosynthetic types were de novo assembled and analyzed to provide a better understanding of differential gene expression between C3, C2 and C4 species. Total RNA of cotyledons and leaves of different species of Salsoleae with different photosynthetic types (C3 Salsola webbii, C2 Salsola divaricata, C4 Salsola oppositifolia, C4 Hammada scoparia) were isolated with RNeasy Plant Mini Kit (Qiagen) following Standard protocol (January 2011) and including DNase Digestion with RNase-Free DNase Set (Qiagen). 500 ng were used for cDNA library generation conducted with TruSeq RNA Sample Preperation Kit (Illumina Inc.) following Low Sample Protocol (TruSeq RNA Sample Preparation v2 Guide, Illumina Proprietary, Part # 15026495 Rev. C, May 2012). Sequencing of single reads was performed on an Illumina HiSeq2000 platform.
Project description:We first report the use of next-generation massively parallel sequencing technologies and de novo transcriptome assembly to gain insight into the wide range of transcriptome of Hevea brasiliensis. The output of sequenced data showed that more than 12 million sequence reads with average length of 90nt were generated. Totally 48,768 unigenes (mean size = 488 bp) were assembled through transcriptome de novo assembly, which represent more than 3-fold of all the sequences of Hevea brasiliensis deposited in the GenBank. Assembled sequences were annotated with gene descriptions, gene ontology and clusters of orthologous group terms. Total 37,373 unigenes were successfully annotated and more than 10% of unigenes were aligned to known proteins of Euphorbiaceae. The unigenes contain nearly complete collection of known rubber-synthesis-related genes. Our data provides the most comprehensive sequence resource available for study rubber tree and demonstrates the availability of Illumina sequencing and de novo transcriptome assembly in a species lacking genome information. The transcriptome of latex and leaf in Hevea brasiliensis
Project description:We generated a protein database directly from soil metaproteomic data by identifying the microbial composition using the Kaiko model's de novo sequencing methods. We first analyzed the mass spectra de novo (without a database), identifying species from the observed peptides. We next gathered full proteomic databases for the identified species and searched the mass spec data using MS-GF+ and this custom-assembled protein sequence database.
Project description:Earthworms show a wide spectrum of regenerative potential with certain species like Eisenia fetida, a terrestrial redworm, capable of regenerating more than two-thirds of their body while other closely related species, such as Paranais litoralis seem to have lost this ability. Earthworms belong to the phylum annelida, in which the genomes of the marine oligochaete Capitella telata, and the freshwater leech Helobdella robusta have been sequenced and studied. Herein, we report the de novo assembled transcriptome of Eisenia fetida (Indian isolate), along with an analysis of the transcriptomic changes during regeneration. We also used de novo assembled RNAseq data to identify genes that are differentially expressed during regeneration, both in the newly regenerating cells and in the adjacent tissue.
Project description:We assembled de novo transcriptomes for three Antarctic invertebrate species: the limpet Nacella concinna (foot muscle tissue), the amphipod Paracerodocus miersii (body wall tissue) and the urchin Sterechinus neumayeri (coelomic fluid). Individuals (n = 5 per treatment) were sampled following exposure to different rates of warming: 1°C per hour, 1°C per day, 1°C per 3 days, or after acclimation to 2°C for 3 months. For longer term experiments (1°C per day, 1°C per 3 days and acclimation), control animals were sampled at both the start and end of the experiment to identify possible seasonal effects. For the shorter term experiment (1°C per hour) only one set of controls was needed.
Project description:The availability of polyunsaturated fatty acids (PUFAs) in food items influences the fitness of organisms at higher trophic levels. Omega 3 and omega 6 fatty acids are essential compounds that cannot be synthesised de novo in these animals. Especially the omega 3 PUFA eicosapentaenoic acid (EPA) is an important molecule, as it is a limiting nutritional component for growth and reproduction in numerous marine and freshwater zooplankton species. With our transcriptomic study in Daphnia magna we address the transcriptomic network behind the metabolism and conversion that is connected to physiological EPA-limitation under temperature stress (20°C vs. 15°C).