Project description:To investigate the effects of C. nutans DCM fraction on HeLa cells using transcriptomic analysis. We then performed gene expression profiling analysis using data obtained from RNA-seq of two different condition at two replicates.
Project description:Members of the Caryophyllaceae Juss. family possess anabolic, adaptogenic, radioprotective, antitumoral and hemorheological properties and have been used in medical practice for the treatment of various inflammatory disorders. Macrophages are key immune cells that coordinate the inflammatory reaction. To identify the effects of Silene sendtneri and Silene roemeri on macrophage activation, primary human macrophages were cultured with extracts of these plants .We used microarrays to determine the global expression pattern induced by the extracts in macrophages.
Project description:Campeiostachys nutans, a dominant perennial grass in the Qinghai-Tibet Plateau, exhibits high tolerance to salt stress. The Salt Overly Sensitive (SOS) pathway is key to plant salt stress tolerance. However, the pivotal role of the SOS pathway in response to salt stress in C. nutans remains unknown. Here, we identified CnbHLH130 as a novel transcriptional activator of CnCBL10, directly binds to the G-box motif in the promoter. CnbHLH130 responds to salt stress and positively regulate salt tolerance in rice and C. nutans. Interestingly, we found CnCBL10 and CnCIPK4 interact with CnbHLH130 by a Y2H screening assay. The interactions were confirmed by split-luciferase complementation (split-LUC), Pull-down, Co-immunoprecipitation (Co-IP) and bimolecular fluorescence complementation (BiFC) assays. Moreover, CnbHLH130 enhanced the interaction between CnCBL10 and CnCIPK4, which further phosphorylate and activate Na+/H+ antiporter CnSOS1 to exclude excess cytosolic Na+ from cells in the shoots. Genetic evidence showed that CnCBL10, CnCIPK4 and CnbHLH130 coordinately regulates salt tolerance in plants. In summary, this study demonstrated that CnbHLH130 acts as a novel core component and transcriptional activator regulating CnCBL10-CnCIPK4 mediated SOS pathway, thus conferring to the salt tolerance in C. nutans. This work advanced our understandings of how an alpine plant greatly survived in the Qinghai-Tibet Plateau by concise regulation of the SOS pathway in response to salt stress.
Project description:We measured transcriptional profiles of individuals of Andropogon gerardii and Sorghastrum nutans, two C4 grass species native to North American grasslands, in a field experiment in which both temperature and precipitation have been manipulated to simulate key aspects of forecasted climate change. 99 samples were analyzed.