Project description:au11-03_gravite - action of microgravity on root development - Action of microgravity on root development - Arabidopsis were grown on horizontal or vertical clinostat for 4, 8 or 12 days. Seedlings on horizontal clinostat were in simulated microgravity and seedlings on vertical clinostat are considered as a control. Comparison was made between plants grown on simulated microgravitry and vertical position.
Project description:The root system is fundamental for maize growth and yield. The primary root system is the most important structure of maize seedlings and is the first organ that emerges at germination, providing water and nutrients for the growing seedlings. However, it is difficult to characterize them at single cell level, due to their complex and heterogeneous cell types. In this study, we profiled the transcriptomes of more than 7000 cells derived from maize root tips of seedlings grown on media with (nitrate+) or without nitrate (nitrate-).
Project description:Comparison of gene expression between shoots of root-wounded seedlings and shoots of control seedlings in Arabidopsis. We identified wounding-induced early (30 min) and late (360 min) root to shoot responsive genes (RtS).
Project description:Plant roots located in the upper soil layers are prone to experience high temperatures. To gain insight into the effect of high temperature on root development and functioning, we exposed five-day-old Arabidopsis thaliana seedlings grown on agar plates to 30 °C for 48 hours, and compared the gene expression profile in the root tip with that from seedlings that remained at 22 °C.
Project description:au11-03_gravite - action of microgravity on root development - Action of microgravity on root development - Arabidopsis were grown on horizontal or vertical clinostat for 4, 8 or 12 days. Seedlings on horizontal clinostat were in simulated microgravity and seedlings on vertical clinostat are considered as a control. Comparison was made between plants grown on simulated microgravitry and vertical position. 6 dye-swap - treated vs untreated comparison
Project description:Comparison of gene expression between shoots of root-wounded seedlings and shoots of control seedlings in Arabidopsis. We identified wounding-induced early (30 min) and late (360 min) root to shoot responsive genes (RtS). Two-condition experiment, shoots of root-wounded seedlings vs. shoots of control seedlings. Biological replicates: 2 control replicates, 2 treated replicates. Technical replicate: Dyeswap
Project description:In this work we show that root illumination influences Pi starvation responses, enhancing the root and shoot growth arrest and limiting the root/shoot ratio as well as root hair elongation. A comparative transcriptomic study using dark-grown roots (DGR) roots seedlings taht were grown with or without phosphate identifies several genes that respond to Pi deficiency that were not previously reported, likely by the negative effect of the root illumination.
Project description:Proteomic studies were performed to identify the proteins involved in copper (Cu) stress responses of Oenothera glazioviana seedlings. Exposure of 28-d-old seedlings to 50 μM CuSO4 for 3 d led to inhibition of shoot and root growth, and the level of lipid peroxidation in the roots was markedly increased. Compared to shoot, Cu absorbed by Oenothera glazioviana more easily accumulation in root. Label-free proteomic analysis indicated 58 differentially abundance proteins (DAPs) of 3149 total proteins in the roots of O. glazioviana seedlings, of which, 36 were upregulated and 22 were downregulated under Cu stress conditions. Gene Ontology analysis showed that most of the identified proteins could be annotated to signal transduction, detoxification, stress defence, carbohydrate, energy, and protein metabolism, development, and oxidoreduction. We also retrieved 13 proteins from the enriched Kyoto Encyclopaedia of Genes and Genomes and the protein-protein interaction databases related to various pathways, including the citric acid (CA) cycle. Application of exogenous CA to O. glazioviana seedlings exposed to Cu caused alleviation of stress symptoms. Overall, this study provides new understanding into the molecular mechanisms at protein level of Cu response in candidate plants contributed to soil properties.