Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Transcript and Metabolite Changes during the Early Phase of ABA-mediated Induction of CAM in Talinum triangulare

ABSTRACT: Crassulacean Acid Metabolism (CAM) has evolved as a water saving strategy and its engineering into crops offers an opportunity to improve their water-use efficiency. This requires a comprehensive understanding of the regulation of the CAM pathway. Here, we use the facultative CAM species Talinum triangulare as a model in which CAM can be induced rapidly by exogenous abscisic acid (ABA). RNA-sequencing and metabolite measurements were employed to analyse the changes underlying CAM induction and identify potential CAM regulators. Non-negative matrix factorisation followed by k¬-means clustering identified an early CAM-specific cluster and a late one, which was specific for the early light phase. Enrichment analysis revealed ABA metabolism, WRKY-regulated transcription, sugar and nutrient transport and protein degradation in these clusters. Activation of the CAM pathway was supported by up-regulation of phosphoenolpyruvate carboxylase, cytosolic and chloroplastic malic enzymes and several transport proteins as well as by increased end-of-night titratable acidity and malate accumulation. Transcription factors HSFA2, NF-YA9 and JMJ27 were identified as candidate regulators of CAM induction. With this study we promote the model species T. triangulare, in which CAM can be induced in a controlled way, enabling further deciphering of CAM regulation.

ORGANISM(S): Talinum fruticosum

PROVIDER: GSE116590 | GEO | 2019/04/11

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Integrated analysis of transcriptomics, metabolomics and proteomics approach to understand the importance of ABA-dependent pathways in facultative plant Mesembryanthemum Crystallinum leaf during the salt induced C 3 to CAM transition to explore the mechanism of this shift.

Project description:Mesembryanthemum crystallinum, a facultative CAM plant, shifts from C3 to CAM photosynthesis under salt stress, enhancing water use efficiency due to inverse stomatal patterns. Exploring the mechanisms of this transition could improve salt tolerance in C3 crops. We used transcriptomics, proteomics, and targeted metabolomics every 8 hours to track molecular shifts during this transition. Results confirmed changes in CAM photosynthesis, starch biosynthesis, degradation, and glycolysis/gluconeogenesis. Transcripts displayed greater circadian regulation than proteins. Oxidative phosphorylation was crucial, with the inositol pathway, involving methylation and phosphorylation, potentially initiating the transition. V-type ATPases showed consistent transcription regulation, aiding in vacuolar osmotic pressure maintenance. ABI1, a major component in the ABA signaling pathway, could be the trigger for the salt-induced transition, as it inhibits ABA-dependent stomatal closure. Our work highlights the pivotal role of ABA pathways in the C3 to CAM shift.

2023-10-13 | MSV000093105 | MassIVE

Transcription profiling of Arabidopsis plants overexpressing CaM

Project description:Effect of CaM overexpression on Arabidopsis transcriptome. Unlike animals, plants are immobile and cannot simply move away from unfavourable environments and thus have developed complex mechanisms to respond to and sense biotic and abiotic signals. These stimuli often lead to tightly controlled changes in cytoplasmic free calcium concentration [Ca2+]cyt termed "calcium signatures" which are thought to be, at least partly, responsible for the specificity of plant responses to the environment. However little is known about how exactly these calcium signatures are decoded into specific end-responses. Calmodulin (CaM) is the most well characterised Ca2+ binding protein and is the primary sensor of changing [Ca2+]. Upon binding Ca2+ CaM undergoes a conformational change allowing binding and activation of a wide variety of target proteins. In plants CaM exists in gene families encoding multiple isoforms. The expression of individual CaM genes can be differentially regulated and isoforms may be differentially localised. Furthermore specific isoforms can bind and activate different target proteins. These features of plant CaM allow the possibility of specificity during calcium signalling in response to specific stimuli. The effect of overexpression of four CaM protein isoforms on the Arabidopsis thaliana transcriptome will be investigated. Ten day old transgenic Arabidopsis seedlings (containing estradiol inducible CaM overexpression constructs) were induced for 9hrs in 5uM estradiol with appropriate water (0.025% DMSO) and empty vector controls.

2008-02-15 | E-NASC-65 | biostudies-arrayexpress

Chorioallantoic membrane (CAM) and embryonic blood serum proteomics

Project description:In chickens, embryonic development begins upon egg formation and lasts for 21 days of incubation until hatching. The CAM is an extraembryonic membrane that serves a critical role in acid-base balance, gaseous exchange, calcium solubilization, and antimicrobial protection. Comparative proteomic analyses of CAM at two developmental stages (ED12 and ED19), in comparison to the proteome of embryonic blood serum, revealed protein groups that are relatively or highly specific to the CAM. The specific CAM functions include gaseous exchange, Ca2+ transport, vasculature development, and protection against pathogen invasion. Overall, our results highlight the structure-function relationship of the CAM protein constituents that potentially could expand its biomedical applications.

2022-08-12 | PXD027129 | Pride

GNPS - Integrated analysis of transcriptomics, metabolomics and proteomics approach to understand the importance of ABA-dependent pathways in facultative plant Mesembryanthemum Crystallinum leaf during the salt induced C 3 to CAM transition to explore the mechanism of this shift.

2023-10-13 | MSV000093105 | GNPS

Comparative analysis of gene expression in HepG2-NTCP_HA:HBc upon treatment with CAM-A or CAM-E

Project description:HepG2-NTCP_HA:HBc cells stably express HBV core antigen. Treatment of these cells with CAM-A compounds (but not CAM-E) induces the abnormal nuclear aggregation of core leading to cell death via apoptosis in a time dependent manner. The goal of this project is to determine the transcriptomic modifications induced by CAM-A treatment in these cell lines at day 2 and day 3 post-treatment.

2024-10-16 | GSE263292 | GEO

Campylobacter phage CAM-P21 isolate:Bacteriophage CAM-P21

Project description:Bacteriophage CAM-P21 Genome sequencing and assembly

| PRJNA714202 | ENA

Transcriptome analysis of pancreatic tumor cell invasion and angiogenesis in the PDAC-CAM model

Project description:Human pancreatic adenocarcinoma cells were grafted on the chick chorioallantoic membrane (CAM). Human and chicken GeneChips were used simultaneously to study gene regulation during PDAC cell invasion.

2009-12-01 | GSE14509 | GEO

Transcript, protein and metabolite temporal dynamics in the CAM plant Agave

Project description:Already a proven mechanism for drought sustainability, crassulacean acid metabolism (CAM) is a specialized type of photosynthesis that maximizes water-use efficiency (WUE) via an inverse (compared to C3 and C4 photosynthesis-performing species) day/night pattern of stomatal closure/opening to shift CO2 uptake to the nighttime, when evapotranspiration rates are low. A systems-level understanding spanning temporal molecular and metabolic controls is needed to define the cellular behavior that confers advantages in water-limited conditions. Here, we report high-resolution temporal behaviors of transcript, protein, and metabolite abundances across a CAM diel cycle and, where applicable, compare those observations to the well-established C3 model plant, Arabidopsis thaliana. A mechanistic finding that emerged is that CAM operates with a shifted altered redox poise relative to Arabidopsis thaliana. Moreover, we identify widespread rescheduled expression for genes associated with signal transduction mechanisms that are presented in guard cells to regulate stomatal opening/closing. Controlled production and degradation of transcript and proteins is a timing mechanism by which to regulate cellular function, yet knowledge of how this molecular timekeeping regulates CAM physiology is unknown. Here, we provide new insight into complex, post-transcriptional and -translational hierarchies that govern CAM in Agave. These data sets together provide a resource that could inform efforts to engineer traits of the more efficient CAM plant into economically valuable C3 crops.

2017-10-13 | MTBLS363 | MetaboLights

U87 cells implanted on a chick CAM (Chorioallantoic Membrane)

Project description:Glioblastoma multiforme (GBM) brain tumours have one of the shortest mean survival times (<1 year). In vivo models of GBM in mice and rats have been developed to study aspects of glioma that cannot be observed in cell culture such as angiogenesis, invasion and metastasis. Gliomas can be induced by implantation of rodent glioma cell lines into the brain or flank of nude mice. The disadvantages of rodent models however include variable growth rate and poor penetrance, which leads to difficulties in collecting clearly graded samples (pre-vascular/vascular). Bikfalvi et al have previously established a human GBM model that addresses these issues based on the chicken egg chorio-allantoic membrane (CAM), a highly vascularised extra-embryonic tissue. We have used DNA microarrays and a CAM model of GBM to study gene expression during the recruitment and development of the tumour vasculature. Over a 5 day period samples were taken every 12 hours from the tumour implantation site consisting of tumour cells and stroma cells, and also from a site distant from the implantation site consisting of just CAM cells. This study will shed light on the dynamic transcriptional signature of pathological angiogenesis. On day 10 of embryonic development 3-5 million U87 cells were deposited onto the surface of the CAM after gentle laceration. The cells were contained within a plastic ring and each tumour was size matched based on its volume. Tumour/stroma and distant CAM samples were cut out at 12 hour intervals post implantation for 5 days, equalling 10 time points. Each time point consisted of three replicates. U87 cells in culture (pre-implantation) were also included in the study in triplicate.

2013-12-02 | E-GEOD-43674 | biostudies-arrayexpress

Escherichia virus CAM-21

Project description:Escherichia virus CAM-21 Genome sequencing and assembly

| PRJNA876927 | ENA