Arabidopsis thaliana
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA211822 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR932111.fastq.gz | Fastqsanger.gz | |||
| SRR932112.fastq.gz | Fastqsanger.gz | |||
| SRR932113.fastq.gz | Fastqsanger.gz | |||
| SRR932114.fastq.gz | Fastqsanger.gz |
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Project description:We report the application of digital gene expression analysis for high-throughput profiling the different gene expression of WT and gi mutant under control and drought conditions. Examination gene expression of WT and gi under control and drought conditions
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Project description:We report the application of digital gene expression analysis for high-throughput profiling the different gene expression of WT and gi mutant under control and drought conditions.
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Project description:To understand the role of Arabidopsis histone deacetylase HDA6 in drought tolerance, we have employed transcriptional profiling of the hda6 mutant and its parental line under drought and control conditions to identify genes differentially expressed in the hda6 mutant under drought and control conditions. Aligent's Whole Arabidopsis Gene Expression Microarray (Agilent-015059, G2519F, V3, 4x44K) was used.
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Project description:Nontargeted and targeted metabolomics measurements of abiotic stress responses in three-week-old Arabidopsis thaliana plants' rosette leaf tissue for Col-0 wild type plants and double/triple knockout mutants of aquaporins (pip2;1 pip2;2 and pip2;1 pip2;2 pip2;4) treated with drought, heat at different air humidities, or combined drought-heat stress at different air humidities. This experiment contains FT-ICR-MS measurements for 103 Arabidopsis thaliana rosette leaf samples covering three genotypes under six different environmental conditions. The three genotypes comprise the Col-0 wildtype and two loss-of-function mutants of aquaporins, a pip2;1 pip2;2 double mutant and a pip2;1 pip2;2 pip2;4 triple mutant (respective AGI locus identifiers: AT3G53420, AT2G37170, AT5G60660). The six conditions include control condition (well-watered, 22 °C, 70% relative air humidity), drought stress (one week without watering), heat stress without changing the absolute humidity of the ambient air (6 hours at 33 °C, 37% relative air humidity), heat stress with supplemented air humidity to maintain a constant vapor pressure deficit before and during the heat episode (6 hours at 33 °C, 84% relative air humidity), and the combinations of drought pretreatment with each of the two heat stress variants (one week of drought followed by 6 hours of heat stress). Samples from all conditions were harvested at the same time (within 15 min starting at 5 pm). For validation, GC-TOF-MS measurements were done for two genotypes (wildtype, double mutant) and two conditions (drought, control) on partially overlapping samples.
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Project description:Expression data in Arabidopsis hda6 mutant axe1-5 and its parental line DR5 under drought and control conditions
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Project description:To understand the role of Arabidopsis histone deacetylase HDA6 in drought tolerance, we have employed transcriptional profiling of the hda6 mutant and its parental line under drought and control conditions to identify genes differentially expressed in the hda6 mutant under drought and control conditions. Aligent's Whole Arabidopsis Gene Expression Microarray (Agilent-015059, G2519F, V3, 4x44K) was used. Arabidopsis hda6 mutant axe1-5 and its parental line DR5 were grown in soil for 3 weeks (16 hours light / 8 hours dark). For drought-treated sample, the plants were subjected to drought by withhelding water supply for indicated days. Then total RNA was prepared from the above-ground tissue and used for the microarray hybridization. Three replicative hybridization experiments for each array were carried out using the independent biological samples.
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Project description:Arabidopsis clf/swn mutant is able to form somatic embryos under the proper treatment conditions. In order to get more information about the process, we compared the expression profiles of wt and clf/swn in absence of treatment, Injury, Auxin, and Auxin+Injury treatments
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Project description:Post-translational modifications of proteins by Small Ubiquitin-like Modifiers (SUMOs) regulate protein degradation and localization, protein-protein interaction, and transcriptional activity. SUMO E3 ligase functions are executed by SIZ1/SIZ2 in yeast and PIAS family members in human. The Arabidopsis genome contains only one gene, SIZ1, that is orthologous to yeast SIZ1/SIZ2. Here, we show that the Arabidopsis SIZ1 interacts with SUM1 and SCE1a, the SUMO E2 conjugating enzyme. Compared to WT, the null mutant siz-1-3 is smaller in statue because of reduced expression of gene involved in brassinosteroid biosynthesis and signalling. Drought stress induces the accumulation of SUMO-protein conjugates, which is in part dependent on SIZ1 but not on ABA. Mutant plants of siz1-3 have significant lower tolerance to drought stress. Genome wide expression analysis identified about 2,000 Arabidopsis genes that are responsive to drought, and SIZ1 mediates the induction of 600 of these genes by a pathway independent of DREB2A and ABA. SIZ1-dependent, drought-responsive genes include those encoding enzymes of the anthocyanin synthesis pathway and jasmonate response. From these results, we conclude that SIZ1 regulates Arabidopsis development and plays a role in drought stress response probably through the control of gene expression. Experiment Overall Design: 12 samples that includes 3 replicates of Col 0 under control conditions, 3 replicates of Col 0 expossed to 2 hr of dehydration, 3 replicates of siz1-3 under control conditions and 3 replicates of siz1-3 expossed to 2 hr of dehydration.
2008-06-15 | E-GEOD-6583 | biostudies-arrayexpress
Project description:Purpose: In this study we investigated the role of JASMONATE RESISTANT 1 (JAR1) and JAR1 mediated JA-Ile formation in drought stress tolerance in Arabidopsis thaliana. Methods: Global transcriptional changes in a newly generated over-expression line (JAR1-OE; 35S::JAR1-1-YFP)), a T-DNA insertion line in the JAR1 locus (jar1-11;SALK_034543), and wild-type Col-0 were investigated by RNA-seq analyses of rosette leaves from 32 day-old plant that were either well-watered (control) or not watered after day 18 (drought). Plants were grown on soil under long-day conditions Results: Under control conditions, using a stringent cut-off (DESeq, adjusted to FDR < 0.01 and LogFC ≥ 1), we found only four differentially expressed genes (DEGs) between jar1-11 and Col-0, all of them downregulated. By contrast, we found 339 DEGs between JAR1-OE and Col-0, of which 134 were downregulated and 205 were upregulated. A comparison of the RNA-seq data from Col-0 between control and drought conditions revealed 3401 DEGs, of which 2023 were down- and 1378 upregulated. By comparison, jar1-11 plants, which were most heavily affected by drought stress, showed a much higher number (6139 in total; 2616 up- and 3523 down-regulated) of DEGs, while the more drought-tolerant JAR1-OE line displayed a lower number (2025 in total; 971 up- and 1054 down-regulated) of DEGs. 2411 DEGs were found between Col-0 and jar1-11 under drought among which 966 genes showed a higher and 1445 genes a lower expression level in jar1-11. On the other hand, out of 998 DEGs found between Col-0 and JAR1-OE under drought, 737 genes showed a higher and 261 genes a lower expression level in JAR1-OE. Moreover, we found 391 DEGs counter-regulated between jar1-11 and JAR1-OE. Conclusion:RNA-seq analysis and additional experiments of plants under control and drought stress conditions provided insight into the molecular reprogramming caused by the alteration in JA-Ile content.
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Project description:Expression data in Arabidopsis rdr1/2/6 mutant under drought stress
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