Arabidopsis thaliana
Ontology highlight
ABSTRACT:
OTHER RELATED OMICS DATASETS IN: PXD001216
PROVIDER: PRJNA214936 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:To understand mRNA expression pattern during cold acclimation and deacclimation, transcriptional profiling of cold acclimation and deacclimation-treated plants were analyzed using Agilent-015059 Arabidopsis 3 Oligo Microarray 4x44K G2519F. Arabidopsis Col-0 were grown on MS plate for 2 weeks (16 hours light / 8 hours dark). Two week-old Arabidopsis samples (NA, non acclimation) were treated with cold (2 M-BM-:C) for 7 days (CA7d) under 12h/12h light/dark conditions. Deacclimation-treated samples (DA6h, DA12h, DA24h) were grown at normal growth temperature under long day conditions after cold treatment for 7 days. Then total RNA was prepared from the whole seedling and used for the microarray hybridization. Three replicative hybridization experiments for each array were carried out using the independent biological samples.
2014-10-02 | E-GEOD-49796 | biostudies-arrayexpress
Project description:To understand mRNA expression pattern during cold acclimation and deacclimation, transcriptional profiling of cold acclimation and deacclimation-treated plants were analyzed using Agilent-015059 Arabidopsis 3 Oligo Microarray 4x44K G2519F.
2014-10-02 | GSE49796 | GEO
Project description:Plants adapt to cold, non-freezing temperatures through cold acclimation and subsequently lose the acquired freezing tolerance in warmer temperatures in a process called deacclimation. By measuring the freezing tolerance of mutant lines, this study identified that the loss of HRA1, LBD41, MBF1c and JUB1 slows the rate of deacclimation in the first four days in Arabidopsis thaliana. Comparative transcriptomic (RNA-Seq) and co-expression analysis of Col-0, mbf1c and jub1 during deacclimation identified an involvement of thermoswitches, cell wall remodeler and transporters in the regulation of the rate of deacclimation. In mbf1c and jub1 a unique increase in stress responsive genes and regulation of the jasmonic acid pathway was detected and linked to the mutants’ retention of freezing tolerance during deacclimation. Hypoxia was observed to be induced in early deacclimation evidenced by an increase in ADH enzyme activity and upregulated gene expression of hypoxia markers (qRT-PCR). This work suggests that the overserved hypoxia response creates hypoxic niches within the plants and supports growth and development during deacclimation.
2022-09-30 | GSE196111 | GEO
Project description:During low temperature exposure, temperate plant species increase their freezing tolerance in a process termed cold acclimation. During deacclimation in response to warm temperatures cold acclimated plants lose freezing tolerance and resume growth and development. While considerable effort has been directed toward understanding the molecular and metabolic basis of cold acclimation, much less information is available about the regulation of deacclimation. Here, we report metabolic (GC-MS) and transcriptional (microarrays, qRT-PCR) responses underlying deacclimation during the first 24 h after a shift of cold acclimated Arabidopsis thaliana (Columbia-0) plants to warm temperature. The data revealed a faster response of the transcriptome than of the metabolome and provided evidence for tightly regulated temporal responses at both levels. Metabolically deacclimation is associated with decreasing contents of sugars, amino acids and glycolytic and TCA cycle intermediates, indicating an increased need for carbon sources and respiratory energy production associated with growth resumption under warm temperature conditions. Deacclimation also involves extensive down-regulation of protein synthesis and changes in the metabolism of lipids and cell wall components. Altered hormonal regulation appears particularly important during deacclimation, with changes in the expression of genes related to auxin, gibberellin, brassinosteroid, jasmonate and ethylene metabolisms. Several transcription factor families controlling fundamental aspects of plant development are significantly regulated during deacclimation, emphasizing that loss of freezing tolerance and growth resumption are interrelated processes that are transcriptionally highly interrelated. Expression patterns of some clock oscillator components during deacclimation resembled those under warm conditions, indicating at least partial re-activation of the circadian clock. This study provide the first comprehensive analysis of the regulation of deacclimation in cold acclimated plants. The data indicate cascades of rapidly regulated genes and metabolites that underly the developmental switch resulting in reduced freezing tolerance and the resumption of growth. They constitute a reference dataset of genes, metabolites and pathways that are crucial during the first rapid phase of deacclimation and will be useful for the further analysis of this important but under-researched plant process. We used whole genome microarrays to monitor changes in gene expression in the Arabidopsis thaliana accession Columbia-0 during the first 24 h after a shift of cold acclimated plants to warm temperature.
2017-09-18 | GSE86935 | GEO
Project description:Overwintering plants are capable of exhibiting high levels of cold tolerance, which is acquired through the process of cold acclimation (CA). In contrast to CA, the acquired freezing tolerance is rapidly reduced during cold de-acclimation (DA) and plants resume growth after sensing warm temperatures. In order to better understand plant growth and development, and to aid in the breeding of cold-tolerant plants, it is important to decipher the functional mechanisms of the DA process.In this study, we performed comparative transcriptomic and proteomic analyses during CA and DA. As revealed by shotgun proteomics, we identified 3,987 peptides originating from 1,569 unique proteins and the corresponding mRNAs were analyzed. Among the 1,569 genes, 658 genes were specifically induced at the transcriptional level during the process of cold acclimation. In order to investigate the relationship between mRNA and the corresponding protein expression pattern, a Pearson correlation was analyzed. Interestingly, 199 genes showed a positive correlation of mRNA and protein expression pattern, indicating that both their transcription and translation occurred during CA. However, 226 genes showed a negative correlation of mRNA and protein expression pattern, indicating that their mRNAs were transcribed during CA and were stored for the subsequent DA step. Under this scenario, those proteins were specifically increased during DA without additional transcription of mRNA. These data indicate that the expression of specific mRNAs and subsequent accumulation of corresponding proteins are not always in accordance under low temperature stress conditions in plants.
2014-10-02 | PXD001216 | Pride
Project description:In Arabidopsis, CBFs transcription factors (CBF1, CBF2 and CBF3) play fundamental roles in plant cold tolerance, especially in cold-acclimation. By employing CRISPR/Cas9, we knocked out CBF1 and CBF2 simultaneously in cbf3 background and generated cbfs triple mutant. This mutant facilitated the discovery of CBF-regulated genes. In this study, Arabidopsis 14-d-old Col-0 and cbfs mutant were treated with cold stress (4 degree centigrade) for 0, 3 and 24 hours. The seedlings were harvested for total RNA extraction and sequencing.
2019-05-07 | GSE130729 | GEO
Project description:Abscisic acid (ABA) plays crucial regulatory roles in cold acclimation and deacclimation of grapevine, making it a potential tool to be utilized in vineyards for the acquisition of preferred phenotypes in winter and spring. To understand the function of ABA , we conducted two experiments during cold acclimation and deacclimation and evaluated the impact of exogenous abscisic acid (ABA) on the grapevine transcriptome. RNA-seq data were collected periodically hours or days after ABA treatment. Transcriptomic data were analyzed using principal component analysis (PCA) , hierarchical clustering, unsupervised weighed gene co-expression network analysis (WGCNA), contrast-based differentially expressed genes (DEGs) identification and pre-ranked gene set enrichment analysis (GSEA). Our results suggest that ABA functions differently during cold acclimation and deacclimation by selectively regulating key pathways including auxin/indole acetic acid (IAA) metabolism, galactose metabolism and ribosome biogenesis. We also identified the activation of several apparent negative feedback systems that regulated ABA-induced transcriptomic changes, suggesting the existence of a balancing system in response to excessive ABA.
2022-01-25 | GSE184114 | GEO
Project description:In this study we used the Affymetrix Barley 1 GeneChip to investigate transcriptome responses of barley cv. Dicktoo to low temperature, including triplicated measurements of cold, freeze/thaw cycles and de-acclimation over 33 days. Experiment Overall Design: Plants were grown at 20ºC for seven days and subject to a symmetrical cycle of acclimation, cold, freeze-thaw, and deacclimation. Chilling began by decreasing the temperature overnight from 20ºC to 4ºC at a rate of 1.3ºC�h-1 and maintaining temperatures of 4 ºC in the day and 2ºC at night for 5 days. Freeze-thaw cycling lasted 12 days with day temperatures of 4ºC and night temperatures gradually decreasing from -2ºC the first night to -4ºC for three nights and -10ºC for four nights, then recovering to -4ºC for three nights and -2ºC for one night. This treatment was designed to allow daily freeze-thaw cycling and protein synthesis. Chilling conditions (4ºC day, 2ºC night) were resumed for five days, followed by deacclimation with increasing temperature to 20ºC overnight and maintaining for three days. Sampling was done at four different times, each at the 11th hour of light to avoid circadian effects: 1) before chilling treatment, 2) five days after initiation of chilling treatment, 3) eight days into freeze-thaw treatment and 4) three days into de-acclimation.
2009-05-11 | E-GEOD-10329 | biostudies-arrayexpress
Project description:In this study we used the Affymetrix Barley 1 GeneChip to investigate transcriptome responses of barley cv. Morex to low temperature, including triplicated measurements of cold, freeze/thaw cycles and de-acclimation over 33 days. Experiment Overall Design: Plants were grown at 20ºC for seven days and subject to a symmetrical cycle of acclimation, cold, freeze-thaw, and deacclimation. Chilling began by decreasing the temperature overnight from 20ºC to 4ºC at a rate of 1.3ºCâ¢h-1 and maintaining temperatures of 4 ºC in the day and 2ºC at night for 5 days. Freeze-thaw cycling lasted 12 days with day temperatures of 4ºC and night temperatures gradually decreasing from -2ºC the first night to -4ºC for three nights and -10ºC for four nights, then recovering to -4ºC for three nights and -2ºC for one night. This treatment was designed to allow daily freeze-thaw cycling and protein synthesis. Chilling conditions (4ºC day, 2ºC night) were resumed for five days, followed by deacclimation with increasing temperature to 20ºC overnight and maintaining for three days. Sampling was done at four different times, each at the 11th hour of light to avoid circadian effects: 1) before chilling treatment, 2) five days after initiation of chilling treatment, 3) eight days into freeze-thaw treatment and 4) three days into de-acclimation.
2008-06-15 | E-GEOD-6993 | biostudies-arrayexpress
Project description:The cold acclimation process is regulated by many factors like ambient temperature, day length, light intensity, or hormonal status. Experiments with plants grown under different light-quality conditions indicate that the plant response to cold is also a light-quality-dependent process. Here, the role of light quality in the cold response was studied in one-month-old Arabidopsis thaliana (Col‐0) plants exposed for one week to 4 °C at short‐day conditions under white (100 and 20 μmol m‐2s‐1), blue or red (20 μmol m‐2s‐1) light conditions. An upregulated expression of CBF1, an inhibition of photosynthesis, and an increase in membrane damage showed that blue light enhanced the effect of low temperature. Interestingly, cold-treated plants under blue and red light showed only limited freezing tolerance compared to white light cold-treated plants. Next, the specificity of the light quality signal in cold response was evaluated in Arabidopsis accessions originating from different and contrasting latitudes. In all but one Arabidopsis accessions, blue light increased the effect of cold on photosynthetic parameters and electrolyte leakage. This effect was not found for Ws-0, which lacks functional CRY2 protein, indicating its role in the cold response. Proteomics data confirmed significant differences between red and blue light treated plants at low temperature and showed that the cold response is highly accession specific. In general, blue light increased mainly the cold-stress related proteins and red light induced higher expression of chloroplast-related proteins, which correlated with higher photosynthetic parameters in red light cold-treated plants. Altogether, our data suggest that light modulates two distinct mechanisms during the cold treatment - red light driven cell function maintaining program and blue light activated specific cold response. The importance of mutual complementarity of these mechanisms was demonstrated by significantly higher freezing tolerance of cold-treated plants under white light.
2022-06-14 | PXD033102 | Pride