Transcription profiling of wheat roots from cultivar Opata grown under drought stress conditions
Ontology highlight
ABSTRACT:
INSTRUMENT(S): arrayWoRx Biochip Reader [Applied Precision]
ORGANISM(S): Triticum aestivum
SUBMITTER: Mohsen Mohammadi
PROVIDER: E-MEXP-1186 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
Similar Datasets
Project description:Plant material consisted of synthetic hexaploid wheat germplasm into the Opata background (Altar 84/ Aegilops squarrosa (TAUS)//Opata) . Plants were grown at a density of 9-11 individuals per 20cm x 10cm (diameter x height) plastic pot containing 1500g well-rinsed Turface MVP® medium (Profile Products LLC, Buffalo, IL), in controlled environment chambers at 23°C, 70% relative humidity, and 16h photoperiod with a photosynthetic photon flux (PPF) of 330±10 µmolem-2s-1 when measured at the top of the canopy at growth stage 22 to 24 in the Zadoks scale (Zadoks et al., 1974). Plants were watered daily until 21 days after seeding (DAS) by flooding trays with water for 5 minutes, then draining the trays. Drought stress was applied by water withholding, beginning on 21 DAS. Watering was withheld from plants belonging to drought treatment, while the control group received water above field capacity. Water content of the growth medium was gravimetrically monitored. Root tissues were collected from control and treated plants when the water content of the treatment group growth medium fell below the permanent wilting point. Three biological replicates were conducted in three separate time-span courses. Total RNA was isolated using a LiCl3 precipitation method following Moore et al., (2005). Dye swap desin microarray analyses of well-watered and water-stressed root tissues were conducted across three biological replicates totaling six hybridizations.
2006-12-01 | E-MEXP-831 | biostudies-arrayexpress
Project description:Drought is a harsh abiotic stress, with plants possessing diverse strategies to survive periods of limited water resources. Although previous research has established links between strigolactone (SL) and drought, in this study, we used the barley (Hordeum vulgare) SL-insensitive mutant hvd14 (dwarf14) to scrutinize the SL-dependent mechanisms associated with water deficit response. We have employed a comprehensive approach integrating transcriptome, proteome, phytohormone analyses, and physiological data to unravel differences between wild-type and hvd14 plants when responding to drought.
2023-06-19 | E-MTAB-12796 | biostudies-arrayexpress
Project description:Genome-wide transcriptional profiling of Arabidopsis thaliana to a combination of heatwave and drought under ambient and elevated CO2. Goal of this study was elucidate the transcriptional responses to a combination of heat wave and drought, and to see how these responses are modifed under future climate (high) CO2. Climate changes increasingly threaten plant growth and productivity. Such changes are complex and involve multiple environmental factors, including rising CO2 levels and climate extreme events. As the molecular and physiological mechanisms underlying plant responses to realistic future climate extreme conditions are still poorly understood, a multiple organizational level-analysis (i.e. eco-physiological, biochemical and transcriptional) was performed, using Arabidopsis exposed to incremental heat wave and water deficit under elevated CO2.The climate extreme resulted in biomass reduction, photosynthesis inhibition, and considerable increases in stress parameters. Photosynthesis was a major target as demonstrated at the physiological and transcriptional levels. In contrast, the climate extreme treatment induced a protective effect on oxidative membrane damage, most likely as a result of strongly increased lipophilic antioxidants and membrane-protecting enzymes. Elevated CO2 significantly mitigated the negative impact of a combined heat and drought, as apparent in biomass reduction, photosynthesis inhibition, chlorophyll fluorescence decline, H2O2 production and protein oxidation. Analysis of enzymatic and molecular antioxidants revealed that the stress-mitigating CO2 effect operates through up-regulation of antioxidant defense metabolism, as well as by reduced photorespiration resulting in lowered oxidative pressure. Therefore, exposure to future climate extreme episodes will negatively impact plant growth and production, but elevated CO2 is likely to mitigate this effect. Transcriptome analysis was performed by Agilent Arabidopsis (V4) 4x44K platform which represented all known genes in the Arabidopsisgenome. Experiments were performed using a modified loop design (Knapen et al., 2009). This design consisted of total 8 arrays; sample from each treatment was labelled once and has 4 biological replicates, two of which were labelled in red and two in green
2014-04-24 | E-GEOD-57035 | biostudies-arrayexpress
Project description:Two hundreds eighty three and 293 known miRNAs were identified from the control and drought stress libraries, respectively. In addition, 253 potential candidate miRNAs were identified, and among them 48 novel miRNAs/ novel members of known miRNA families whose complementary miRNAs were also detected. Both high-throughput sequencing and RT-qPCR confirmed that 22 members of 4 miRNA families were up-regulated and 10 members of 6 miRNA families were down-regulated in response to drought stress. Among the 48 novel miRNAs, 24 miRNAs were responsive to drought stress with 21 and 3 miRNAs being up- and down-regulated, respectively. The known and predicted targets of these miRNAs in response to drought stress are involved in diverse cellular processes in plants, such as development, transcription, protein degradation, detoxification, nutrient status and cross adaptation. To identify miRNAs in response to drought stress in M. truncatula, control and drought stress shoots were used to construct small RNA libraries, respectively. The date from Solexa sequencer (Illumina) was compared to identify miRNAs in response to drought stress.
2012-05-08 | E-GEOD-29154 | biostudies-arrayexpress
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2011-08-29 | E-MEXP-3320 | biostudies-arrayexpress
Project description:The effect of drought stress on wild-tpye and transgenic potato expressing the TPS1 gene of yeast was studied.
2012-06-01 | E-MEXP-3464 | biostudies-arrayexpress
Project description:High quality RNA was extracted from the whole seedlings (Combined root and leaf samples) using TRI Reagent (Ambion, Inc. USA) and pooled from 12 independent stressed and non-stressed plant samples separately, and treated with DNase-I (QIAGEN GmbH, Germany). Subsequently, RNA cleanup was carried out using RNeasy Plant Mini Kit (QIAGEN GmbH, Germany) and 5 ug of total RNA from each sample in triplicates were reverse-transcribed to double stranded cDNA using the GeneChipï¾® One-Cycle cDNA Synthesis Kit. The biotin-labelled cRNA was made using the GeneChipï¾® IVT Labelling Kit (Affymetrix, CA, USA). Twenty microgram of cRNA samples was fragmented and out of which which 7.5 ug cRNA were hybridized for 16 hours at 45C to the Affymetrix GeneChipï¾® Rice Genome Array (Santa Clara, CA, USA). After washing and staining with R-phycoerythrin streptavidin in a Fluidics Station, using the Genechipï¾® Fluidics Station 450, the arrays were scanned by the Genechipï¾® 3000 Scanner. The chip images were scanned and extracted using default settings and the CEL files were produced with the Affymetrix GeneChip Operating Software (GCOS 1.2). The resulting .CEL files were imported into the GeneSpring GX 10 (Agilent Technologies Inc, Santa Clara CA) and normalized with the PLIER16 algorithm. The resulting expression values were log2-transformed. Average log signal intensity values of three technical replicates for each sample were used for advance analysis.
2010-10-09 | E-MEXP-2401 | biostudies-arrayexpress
Project description:Rice is the major staple food for more than half of world's population. As global climate changes, we are observing more floods, droughts and severe heat waves. Two rice cultivars with contrasting genetic backgrounds and levels of tolerance to drought, Nipponbare and IAC1131, were used in this study. Four-week-old seedlings of both cultivars were grown in large soil volumes and then exposed to moderate and extreme drought for 7 days, followed by 3 days of re-watering. Mature leaves were harvested from plants from each treatment for protein extraction and subsequent shotgun proteomic analysis, with validation of selected proteins by western blotting. Gene Ontology (GO) annotations of differentially expressed proteins provide insights into the metabolic pathways that are involved in drought stress resistance. Our data indicate that IAC1131 appears to be better able to cope with stressful conditions by up regulating a suite of stress and defence response related proteins. Nipponbare, in contrast, lacks the range of stress responses shown by the more stress tolerant variety, and responds to drought stress by initiating a partial shutdown of chlorophyll biosynthesis in an apparent attempt to preserve resources.
2018-01-31 | PXD004118 | Pride
Project description:Transcriptome analysis on young developing leaves of 6 Arabidopsis thaliana accessions (An1, Blh1, Col0, Cvi0, Oy0, Sha) subjected to control and mild drought conditions.
2015-02-28 | E-MTAB-3279 | biostudies-arrayexpress
Project description:Rice (Oryza sativa), the major staple food crop is being cultivated under varying ecosystems ranging from irrigated lowland to rainfed upland environments. Improvement in the rice production under drought prone unfavourable environment depends on the development of drought tolerant genotypes which needs thorough understanding of physiological and molecular events behind the tolerance mechanism. There is considerable genetic variation for drought tolerance mechanism within the cultivated gene pool. To understand the diversity of drought response, two indica rice genotypes namely, i) Apo, an up-land drought tolerant indica veriety from Philippines and ii) IR64, a popular high yielding drought susceptible genotype were selected for this study. We used the 22K rice Oligoarray from Agilent technologies to study the transcript profile in the leaves of the two contrasting rice genotypes under control and drought stressed conditions during vegetative phase. Keywords: Drought response We used Agilent rice gene chips (G4138A) to investigate the transcript level changes in rice leaf tissues during drought stress. We used two contrasting rice genotypes (IR64 drought susceptible and Apo drought tolerant) differing in their degree of drought tolerance. Plants were grown under green house conditions and drought stress was imposed on 33rd DAS. Leaf sampling was done in both control and drought stressed plants after 6 days of drought stress. Three replications of microarray experiments were carried out by hybridizing the control samples against the drought stressed samples.
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