ABSTRACT: Examination of Columbia-O wildtype and flk mutant tissues under the following conditions: 7 day-old long-day grown, collected 1hr after dawn (exp3: GSM26236-GSM26241); 16 day-old continuous-light-grown (exp2: GSM26230-GSM26235); 16 day-old long-day grown, collected at 16hrs after dawn (exp1: GSM26224-GSM26229). Keywords = Arabidopsis Keywords = flowering Keywords = flk Keywords: other
Project description:Examination of Columbia-O wildtype and flk mutant tissues under the following conditions:; 7 day-old long-day grown, collected 1hr after dawn (exp3: GSM26236-GSM26241);; 16 day-old continuous-light-grown (exp2: GSM26230-GSM26235);; 16 day-old long-day grown, collected at 16hrs after dawn (exp1: GSM26224-GSM26229).
Project description:The mouse liver mitochondrial proteome was analysed in four different mouse groups (allocation of the samples to Exp1 and Exp2 in brackets): AL (ad libitum fed) C57Bl6 (Exp1 129, Exp1 130, Exp2 130), DR (dietary restriction) C57Bl6 (Exp1 126, Exp1 127, Exp1 128), AL ICRFa (Exp2 128, Exp2 129) and old ICRFa (Exp2 126, Exp2 127). To achieve quantitative standardisation between Exp1 and Exp2, all 10 samples were pooled and one portion of the pool was anlaysed in each Exp (Exp1 131 and Exp2 131). Following tryptic digest and TMT 6-plex labelling, samples were separated by OffGel electrophoresis and all fractions were subsequently analysed by LCMSMS on an Orbitrap LTQ XL. One survey scan (res. 30,000) was followed by a high energy HCD scan (res. 6000) and a low energy CID scan in the LTQ. HCD data were used for the quantitation and CID data for the identification of peptides. Data were searched using Mascot (v. 2.2) through the Proteome Discoverer interface. Peptide raw quantitations were extracted as text files and further processed using dpeaqms (http://r-forge.r-project.org/projects/dpeaqms/) to obtain probability values for the differences in protein amounts for specific proteins between the different animal groups.
Project description:Compared analysis of the transcriptomes of 12-day old seedlings from wild type Col-0 treated with NO for 15, 30 and 60 min vs untreated control seedlings. Samples were harvested 12 h after dawn of day 12 after sowing and seedlings were grown under long days (16 h light / 8 h darkness) photoperiodic conditions.
Project description:12plex_medicago_2013-08 - r108 in symbiosis with rhizobia wt or rhizobia mutant for baca. - Two experiments to compare the transcriptomic response of medicago plants: Agar medium versus Phytagel medium (exp1) and rhizobium WT versus BacA (exp2). - Medicago truncatula ecotype R108 was inoculated with the symbiotic rhizobium Sinorhizobium meliloti strain Sm1021 and with its derivative mutant delta bacA. Nodules were collected 13 days after inoculation, and RNA were prepared for transcriptome analysis, there were three biological independant experiements.
Project description:12plex_medicago_2013-08 - r108 permissive medium versus non permissive medium. - Two experiments to compare the transcriptomic response of medicago plants: Agar medium versus Phytagel medium (exp1) and rhizobium WT versus BacA (exp2). - Medicago truncatula R108 seedlings were inoculated with S. medicae WSM419 and were cultivated during three days on buffered nidulation medium solidified with Phytagel or Agar.
Project description:Global proteomes of Trichodesmium erythraeum sp. IMS101 over the diel cycle. Cells were grown in a 14:10 day/light incubator with mimicked dusk and dawn illumination. Sampling occurred every 1-3 hours with concentrated sampling around dawn and dusk.
Project description:Soybean (Glycine max L. cv Enrei) seeds were sterilized with 2% sodium hypochlorite solution and then thoroughly rinsed in water. The sterilized seeds were sown 4 cm inside surface of sand in 450 mL of quartz seedling cases wetted with 150 mL water and grown at 25°C and 70% humidity in a growth chamber (Sanyo, Tokyo, Japan) under white fluorescent light (160 μmol m-2 s-1, 16 h light period/day). Two-day-old soybeans were flooded for 2 days and hypocotyl samples were collected at the day of removal of flooding and then at 2 more points during the 4-day recovery period.
Project description:A dual biomarker signature extracted a stage-specific cytotype according to cell surface expression of CXCR4/FLK-1 after 5 days of spontaneous differentiation from pluripotent stem cells. Genome-wide microarray analysis revealed a high degree of similarity between CXCR4+/FLK-1+ and CXCR4-/FLK-1- subpopulations at day 5, yet the divergent gene expression profile represents more than 700 unique transcripts. Functional analysis of the 294 up-regulated and 440 down-regulated transcripts that distinguished CXCR4+/Flk-1+ from CXCR4-/Flk-1- subpopulations identified an overt ontologic prioritization of “Cardiovascular Development”-IPA 7.0, 2009.Thus, a biomarker-selected subpopulation from spontaneously differentiated pluripotent stem cells identifies a pool of genes that non-stochastically integrate into a blueprint providing instructions for cardiac lineage-specification. Keywords: Comparison of day 5 embryonic stem cell progenity: CXCR4/FLK-1 biomarker positive versus biomarker negative cells Differentiating embryonic stem cells were FACS sorted at day 5 based on a dual CXCR4/FLK-1 biomarker signature and double positive and double negative progeny were thus collected. Day 5 sorted progeny were independently collected to provide raw material for three biological replicates for each experimental condition. In this manner, three CXCR4/FLK-1 double positive biological samples, and three CXCR4/FLK-1 double negative biological samples were obtained. Total RNA was extracted from each of the samples and RNA pools were profiled on Affymetrix Mouse 430 2.0 Arrays to identify global gene expression changes between double positive and double negative progeny at day 5 of differentiation.
Project description:Calcium deficiency response in liverwort, Arabidopsis and lettuce: (1) Marchantia polymorpha: M. polymorpha wildtype and Gβ-null mutant plants (Tak-1, gpb1-2) were grown in control liquid Yamagami media (2 mM Ca) for 6 days. For RNA-seq experiments, 6 day old gemmalings were transferred to calcium deficiency (0 mM Ca) media. Samples were collected at 48 h after the transfer. The transcriptomic profiles were collected from two independent batches. In total four biological replicates were used for each condition and each genotype for a total of 16 samples. (2) Arabidopsis thaliana: For Arabidopsis RNA-seq experiment, 6-day old seedlings grown on ½ strength MS media with sucrose were transferred to Yamagami media with 2 mM or 0 mM CaCl2 and treated for 7 days. (3) Lactuca Sativa: For lettuce RNA-seq, 4-day old seedlings grown on water agar (1%) were transferred to Yamagami media with 2 mM or 0.15 mM CaCl2 and treated for 7 days. In total four and three biological replicates were used for each condition for a total of 8 and 6 samples respectively for Arabidopsis and lettuce.
Project description:In order to study in detail short and mid term heat stress molecular response we performed a shotgun proteomics study. One-year-old P. radiata seedlings (plant size ∼33 ± 4 cm) were kept in 1 dm3 pots under a photoperiod of 16 h (400 µmol m−2 s−1) at 25 °C and 50% relative humidity (RH), and 15 °C and 60% RH during the night period. The plants were previously acclimated over a 1-month period inside the climate chamber, being watered with nutritive solution (N : P : K, 5 : 8 : 10). In order to perform a realistic experiment, and corresponding with the dawn, heat exposure treatment began with an increasing temperature gradient from 15 to 40 °C over 5 h, which was then maintained for 6 h; after that, temperature was gradually decreased from 40 to 15 °C over 5 h. This experimental procedure was repeated for 5 days and sampling was performed at: 3 h after 40 °C was reached on Day 1 (T1/2) and at the end of the 6 h heat exposure on Day 1 (T1), Day 2 (T2), Day 3 (T3) and Day 5 (T5) (Figure 1a). Plants were watered every day to 80% full capacity (FC) in order to avoid a collateral drought stress. A group of control plants was also collected on Day 1 (C) before starting the heat exposure.