Nitrogen and light are two major regulators of plant metabolism and development. While genes involved in the control of each of these signals have begun to be identified, regulators that integrate gene responses to nitrogen and light signals have yet to be determined.
Modeling the global effect of the basic-leucine zipper transcription factor 1 (bZIP1) on nitrogen and light regulation in Arabidopsis.
Specimen part
View SamplesIn this study, we used a cross-species network approach to uncover nitrogen (N)-regulated network modules conserved across a model and a crop species. By translating gene network knowledge from the data-rich model Arabidopsis (Arabidopsis thaliana, ecotype Columbia-0) to a crop, rice (Oryza sativa spp. japonica (Nipponbare)), we identified evolutionarily conserved N-regulatory modules as targets for translational studies to improve N use efficiency in transgenic plants.
Cross-Species Network Analysis Uncovers Conserved Nitrogen-Regulated Network Modules in Rice.
Age, Specimen part
View SamplesCathepsin L is a lysosomal protease that is secreted by several cancer cells. Cathepsin L upregulation has been widely associated with poor clinical outcome and increased metastatic incidence. However, whether Cathepsin L participates in tumor angiogenesis remains less studied. Our study showed a significant activation of angiogenic capacity of endothelial cells in presence of purified or tumor derived Cathepsin L. In addition, Cathepsin L exposure led to a significant increase in the proliferative capacity of endothelial cells. While the ability of Cathepsin L to promote endothelial cell sprouting, migration, invasion and tube formation can be attributed to its proteolytic effects on extracellular matrix, how it promotes endothelial cell proliferation remains obscure. The objective of this study was to test if Cathepsin L exposure can activate signaling cascades and gene expression leading to proliferation of endothelial cells.
No associated publication
Specimen part, Cell line, Treatment
View SamplesThis SuperSeries is composed of the SubSeries listed below.
LNK genes integrate light and clock signaling networks at the core of the Arabidopsis oscillator.
Specimen part, Treatment, Time
View SamplesLight pulses at the end of the day or night be able to control the phase of the circadian clock. Pulses in the middle of the night has not effect on the circadian oscilations.
LNK genes integrate light and clock signaling networks at the core of the Arabidopsis oscillator.
Specimen part, Treatment, Time
View SamplesIn seedlings, the induction of shade avoidance syndrome (SAS) involves a rapid up-regulation for known shade marker genes and subsequently activates an interacting network of various hormones that will eventually lead to cell elongation. We found that the B-box protein AtBBX24 have positive effects on the SAS (positive regulators). Global expression analysis of col and bbx24 seedlings reveals that a large number of genes involved in hormonal signaling pathways are positively regulated by BBX24 in response to simulated shade.
The transcriptional regulator BBX24 impairs DELLA activity to promote shade avoidance in Arabidopsis thaliana.
Specimen part, Treatment
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