Project description:To stabilize crop yield under low temperature stress conditions, it is important to improve stress tolerance in crops. Upon exposure to low temperature stress, many genes are induced and their products are thought to function as cellular protectants of stress-induced damages Therefore, responses of global gene expression profiles to cold stress was analyzed at the booting stage using the 60K Rice Whole Genome Microarray. The cold-tolerant rice variety, Stejaree45 was transplanted in 1/5000 pot at 20 days after seeding. Fertilizers were applied at the rate of 11, 7.7 and 9.3 kg/10a in N, P2O5 The samples were selected at the booting stage of rice on the basis of the auricle distance (the distance between auricles of flag leaf and the previous leaf of the main culm). The plants with an auricle distance ranging from -5 ㎝ to 0 ㎝ were exposed up to the flag leaf auricle using cold water (13℃) for 3 days. Glumous flowers and flag leaves of the cold-resistant variety, Stejaree45, were used to examine gene expression profiles.
Project description:To identify substrates of the ubiquitinating E3 enzyme Rsp5 we applied purified Rsp5 to duplicate protein arrays. The Rsp proteins were expressed as fusion proteins to GST. We used as a control Ubr1, a RING domain containing E3 ligase We analyzed Rsp5 from S.cerevisiae on duplicate arrays, with four control chips, two without Rsp5 and two with Ubr1.
Project description:Cell line-based proteomics studies are susceptible to intrinsic biological variation that contributes to increasing false positive claims; most of the methods that follow these changes offer a limited understanding of the biological system. We applied a quantitative proteomic strategy (iTRAQ) to detect intrinsic protein variation across SH-SY5Y cell culture replicates. More than 95% of the quantified proteins presented a coefficient of variation (CV) <20% between biological replicates and the variable proteins, which included cytoskeleton, cytoplasmic and housekeeping proteins, are widely reported in proteomic studies. We recommend this approach as an additional quality control before starting any proteomic experiment.
Project description:Environmental stressors such as repeated social defeat may trigger powerful activation of sub-conscious parts of the brain. We examine the consequences of such stress in male rats on the pituitary gland. We prepared 20 Sprague Dawley rats. 10 of them were exposed to stress induced by the resident-intruder paradigm while the other 10 were controls. After dislocation of the neck under isoflurane anaesthesia, the pituitary gland was harvested. Total RNA was isolated from the tissues and used in mRNA sequencing.
Project description:This SuperSeries is composed of the following subset Series: GSE24037: Salivary cytokine alterations in HIV infection part 1 GSE24064: Salivary cytokine alterations in HIV infection part 2 Refer to individual Series
Project description:Pseudomonas plecoglossicida is a facultative pathogen that is associated with diseases of multiple fish, mainly at 15-20 °C. Although fish disease caused by P. plecoglossicida has led to significant economic losses, the mechanisms of the temperature-dependent virulence are unclear. Here, we try to identify potential pathogenicity mechanisms and demonstrate the direct regulation of virulence factors by temperature with iTRAQ.