Project description:Transcriptional profiling of purple sea urchin (Strongylocentrotus purpuratus) larvae cultured under four different seawater conditions: (i)13°C/400 µatm pCO2, (ii)13°C/1100 µatm pCO2, (iii)18°C/400 µatm pCO2 (iv)18°C/1100 µatm pCO2. The goal was to determine the effects of temperature and CO2, both important climate change variables, on gene expression
Project description:We sequenced complementary DNA created from white muscle messenger RNA in juvenile blue rockfish and performed a differential gene expression analysis to describe the fishes' responses to the global change-related stressors of high pCO2 (low pH) and hypoxia (low dissolved oxygen, DO). To examine gene expression over ecologically realistic timescales that emulate the duration of spring upwelling events in the California Current ecosystem, we collected and sequenced samples after 12 h, 24 h and two weeks of exposure to four treatments: control (pH≈8.0, pCO2≈400μatm, DO≈8 mg/L), high pCO2 (pH≈7.6, pCO2≈1200μatm, DO≈8 mg/L), hypoxic (pH≈8.0, pCO2≈400μatm, DO≈4 mg/L), and combined high pCO2/hypoxic (pH≈7.6, pCO2≈1200μatm, DO≈4 mg/L).
Project description:Transcriptional profiling of purple sea urchin (Strongylocentrotus purpuratus) larvae cultured under four different seawater conditions: (i)13M-BM-0C/400 M-BM-5atm pCO2, (ii)13M-BM-0C/1100 M-BM-5atm pCO2, (iii)18M-BM-0C/400 M-BM-5atm pCO2 (iv)18M-BM-0C/1100 M-BM-5atm pCO2. The goal was to determine the effects of temperature and CO2, both important climate change variables, on gene expression Larvae were cultured under four different seawater conditions (ii)13M-BM-0C/1100 M-BM-5atm pCO2, (iii)18M-BM-0C/400 M-BM-5atm pCO2 (iv)18M-BM-0C/1100 M-BM-5atm pCO2, (i)13M-BM-0C/400 M-BM-5atm each with three replicate cultures for each condition and sampled at pluteus stage
Project description:Mesocosms (600 L) were deployed at the Southern Ocean Time Series (SOTS) in Austral late summer during a high nutrient, low chlorophyll period. One mesocosm represented control, present-day conditions (high nutrients/low temperature/low pCO2/low Fe/low irradiance), while the other was amended to represent a projected 2100 scenario (low nutrients/high temperature/high pCO2/high Fe/high irradiance). Approximately 2 L were filtered from the mesocosms onto 5 µm filters at Days 0, 2, 4, and 7 of the incubation.
Project description:In order to promote our understanding of the responses of green crab acid-base regulatory epithelia to high pCO2, Baltic Sea green crabs were exposed to a pCO2 of 400 Pa for 3 and 7 days after which posterior gills 7 and 9 were sampled. Gills were then subsequently screened for differentially expressed gene transcripts using a 4,462-feature microarray developed by Towle et al. 2010.
Project description:Pocilloporid corals (Pocillopora acuta) from an upwelling coral reef in Southern Taiwan (Houbihu) were exposed to one of four experimental treatments: ambient temperature (25C)+ambient pCO2 (~430 ppm), ambient temperature+high pCO2 (~850 ppm), high temperature (29C)+ambient pCO2, or high temperature+high pCO2. Proteins were extracted from 2-3 replicates per treatment (n=11 total), digested, and analyzed by iTRAQ followed by nano-liquid chromatography and MS/MS. Since there are only eight iTRAQ labels, 6 and 5 samples were run in each batch ("1" & "2," respectively, in the attached documents), and a normalizer sample was labeled with iTRAQ tag 113 and run in both batches to control for batch-to-batch variation. I am attaching the RAW files, MZML files, MZID files, the P. acuta-Cladocopium transcriptome (conceptually translated to proteins; as a fasta file), a supplemental data (Excel) file, and the associated manuscript, which has not yet been submitted and it subject to change.
Project description:In order to promote our understanding of the responses of green crab acid-base regulatory epithelia to high pCO2, Baltic Sea green crabs were exposed to a pCO2 of 400 Pa for 3 and 7 days after which posterior gills 7 and 9 were sampled. Gills were then subsequently screened for differentially expressed gene transcripts using a 4,462-feature microarray developed by Towle et al. 2010. For each experimental block (gill7-day3, gill7-day7, gill9-day3, gill9-day7), 6 replicate samples were obtained for control (= 39 Pa) and elevated (= 400 Pa) pCO2 exposed animals. Each microarray slide included 4 technical replicates for each transcript and was hybridized with one control pCO2 (labelled with AlexaFluor555) and one elevated pCO2 cDNA (labelled with AlexaFluor647). Lowess-normalized gene expression was calculated as the log2 of the ratio of the fluorescence intensity of the CO2-treatment cDNA to the fluorescence intensity of the control cDNA (log2 ratio=F635/F532).
Project description:In this study, we utilized the microfluidics chip technology on the gonads of Amur sturgeon to identifiy gender-specific miRNAs. The probes of all miRNAs about 663 published in fish and our novel miRNAs from sturgeon were chosed in the microarray experiment.
Project description:In this study, we utilized the microfluidics chip technology on the gonads of Amur sturgeon to identifiy gender-specific sRNAs. The probes of all miRNAs about 2751 published in fish and our novel miRNAs from sturgeon were chosed in the microarray experiment.
