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Nitric oxide(CysNO) mediated transcriptome profiling in Arabidopsis thaliana

ABSTRACT: This study provides comprehensive information about plant responses to nitrosative stress at transcript level and would prove helpful in understanding and incorporating mechanisms associated with nitrosative stress responses in plants.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE81361 | GEO | 2016/05/13

SECONDARY ACCESSION(S): PRJNA321410

REPOSITORIES: GEO

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Nitric oxide(CysNO) mediated transcriptome profiling in Arabidopsis thaliana

Project description:This study provides comprehensive information about plant responses to nitrosative stress at transcript level and would prove helpful in understanding and incorporating mechanisms associated with nitrosative stress responses in plants. 1mM CysNO Treatment to Leaf disc, Transcriptome profiling

2016-05-13 | E-GEOD-81361 | biostudies-arrayexpress

Heme coordination and nitric oxide binding by Dnr regulators are essential for adaptation of Dinoroseobacter shibae to anaerobiosis

Project description:The adaptation strategies and regulatory networks behind the adaptation of D. shibae DFL12T to nitrosative stress under anaerobic starvation was investigated. Furthermore, the role of the oxygen sensing regulator FnrL and the heme coordinating regulators DnrD and DnrF were determined under nitrosative stress conditions. Therefore transcriptional analyses were performed using regulator knock out strains.

2017-03-03 | GSE95560 | GEO

Discovery of a Nitric Oxide-Responsive Protein in Arabidopsis thaliana.

Project description: Not available

| S-EPMC6696476 | biostudies-literature

Genome-wide identification of nitric-oxide regulated H3K9/14ac sites in Arabidopsis thaliana

Project description:We report on the identification of nitric-oxide regulated H3K9/14ac sites in Arabidopsis. For this purpose liquid grown Arabidopsis seedlings were treated with the natural NO-donor S-nitrosoglutathione (GSNO), GSNO in combination with the NO-scavenger cPTIO, GSH (control) or TSA (positive control). Material was crosslinked and harvested 3h and 16h after onset of the treatments. Then, quantitative analysis of the H3K9/14ac patterns across these treatment was performed using DiffBind. By comparison of the GSNO and GSNO/cPTIO treatment, NO-regulated H3K9/14ac sites were identified. These sites were then annotated to the nearest TSS. GO enrichment analysis revealed that NO affects H3K9/14ac at many stress-responsive and photosynthetic genes.

2017-03-07 | GSE82075 | GEO

Dissecting physiological and transcriptional responses of nitric oxide to drought stress by increasing in vivo nitric oxide content in Arabidopsis

Project description:Nitric oxide (NO) is involved in all major environmental stresses. However, most of these understandings were mainly based on pharmacological study using NO modulator compounds. Recently, our studies together with others provided a new class of plant experimental system with specific in vivo NO release through constitutively overexpressing rat neuronal NO synthase (nNOS) in plants. In this study, we found that the nNOS transgenic Arabidopsis plants displayed lower level of H2O2 content, but higher levels of antioxidant enzyme activities and osmolytes under drought stress conditions. Transcriptomic analysis identified 490 and 20 genes that were differentially expressed in wild type (WT) and nNOS transgenic plants under control and drought stress conditions, respectively. Pathway analysis revealed that many genes involved in photosynthesis, cell, misc, co-factor and vitamin metabolism, major CHO metabolism, OPP and secondary metabolism were largely changed in nNOS vs. WT under control or drought stress conditions. Interestingly, CBF1/2 and 13 zinc finger family proteins, known as important family of transcription regulators in modulating several stress-responsive genes, were differentially expressed by nNOS transgenic effect. Additionally, some genes were commonly regulated by nNOS transgenic and abscisic acid (ABA) effects, indicating new insights to cross-talk between ABA and NO. Taken together, in vivo NO modulated antioxidant enzyme activities, osmolyte level, and the expression of genes involved in several pathways, thereby resulting in enhanced stress tolerance in nNOS transgenic plants. These observations might provide some insights to understand the physiological and molecular mechanisms of NO in response to drought stress in Arabidopsis.

2014-06-03 | GSE48474 | GEO

Functional Insight of Nitric-Oxide Induced DUF Genes in <i>Arabidopsis thaliana</i>.

Project description: Not available

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Copper amine oxidase 8 regulates arginine-dependent nitric oxide production in Arabidopsis thaliana.

Project description: Not available

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The Staphylococcus aureus nitric oxide synthase (saNOS) modulates respiratory metabolism and cell physiology

Project description:Nitric oxide synthase (NOS) enzymes produce nitric oxide (NO), a highly reactive free radical capable of interacting with multiple cellular targets. Although saNOS contributes to Staphylococcus aureus virulence, as well as protection against exogenous oxidative stress and antimicrobials, the current mechanism behind these phenotypes is unknown. Here we report a previously-undescribed role for saNOS in modulating S. aureus physiology. When grown aerobically, endogenous reactive oxygen species (ROS) and superoxide levels were elevated in a S. aureus nos mutant. NO has been shown to slow respiration in other organisms, and likewise, comparison of respiratory dehydrogenase activity and membrane potential in wild-type, nos mutant, and complement strains suggested that saNOS-derived NO limits S. aureus aerobic respiration. Multiple transcriptional and metabolic changes were also observed in a S. aureus nos mutant, as assessed by RNAseq and targeted metabolomics analyses, respectively. Specifically, expression of genes associated with oxidative and nitrosative stress responses, anaerobic and lactate metabolism, and cytochrome biosynthesis and assembly were increased in the nos mutant relative to wild-type. Metabolites utilized to produce reducing equivalents by the right arm of the TCA cycle were depleted in a nos mutant (citrate and α-ketoglutarate), whereas fumarate and malate levels were increased relative to wild-type and complement strains. A significant reduction in lactate levels was also observed in the nos mutant. Collectively, these results support a model in which the absence of saNOS results in increased respiration and ROS accumulation, which may signal the cells to switch to an alternative lactate-based respiratory metabolism.

2017-07-10 | GSE77400 | GEO

Nitric Oxide controls shoot meristem activity controlling DNA methylation in Arabidopsis thaliana

Project description:This SuperSeries is composed of the SubSeries listed below.

2023-12-01 | GSE216952 | GEO

Arabidopsis thaliana

Project description:della-regulation of salt stress responses-DELLAs contribute to salt stress responses

| PRJNA101699 | ENA