Dynamic profile of gene expression in rice panicle under high temperature
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ABSTRACT:
ORGANISM(S): Oryza sativa
PROVIDER: GSE38665 | GEO | 2012/11/28
SECONDARY ACCESSION(S): PRJNA168362
REPOSITORIES: GEO
Similar Datasets
Project description:To comprehend the profile of rice gene expression at reproductive stage under high temperature, Agilent 4M-CM-^W44k rice oligo microarray experiments were carried out using rice panicle of developmental stage 7-9 at 0min, 20min, 1hr, 2hr, 4hr, and 8hr after the treatment of 40 degree centigrade, and the significantly expressed genes mainly involved in transcriptional regulation, transport, cellular homeostasis, and stress response were identified. Among them, the predominant transcription factor gene families were Hsf, NAC, AP2/ERF, WRKY, MYB, and C2H2. KMC analysis discovered the time-dependent gene expression pattern under heat. The results of motif co-occurrence on the promoters of genes from an early up-regulated cluster showed the important roles of GCC box, HSE, ABRE, and CE3, and unraveled the possible cross-talk mechanism during heating. The response model central to ROS combined with transcriptome data indicated the great importance to maintain ROS balance in heat response in rice panicle and the wide existing of cross-talks. Heat shock induced gene expression in rice panicle of developmental stage 7-9 was measured at 0min, 20min, 1hr, 2hr, 4hr, and 8hr after the treatment of 40 degree centigrade in plant growth chamber. Two independent replicate experiments were performed at each time point.
2012-11-28 | E-GEOD-38665 | biostudies-arrayexpress
Project description:To comprehend the profile of rice gene expression at reproductive stage under high temperature, Agilent 4x44k rice oligo microarray experiments were carried out using rice panicle of developmental stage 7-9 at 0min, 10min, 20min, 60min, and 2hr after the treatment of 40 degree centigrade, and the significantly expressed genes mainly involved in transcriptional regulation, transport, cellular homeostasis, and stress response were identified. Among them, the predominant transcription factor gene families were Hsf, NAC, AP2/ERF, WRKY, MYB, and C2H2. KMC analysis discovered the time-dependent gene expression pattern under heat. The results of motif co-occurrence on the promoters of genes from an early up-regulated cluster showed the important roles of GCC box, HSE, ABRE, and CE3, and unraveled the possible cross-talk mechanism during heating. The response model central to ROS combined with transcriptome data indicated the great importance to maintain ROS balance in heat response in rice panicle and the wide existing of cross-talks. Heat shock induced gene expression in rice panicle of late developmental stage was measured at 0min, 10min, 20min, 60min, and 2hr after the treatment of 40 degree centigrade in plant growth chamber. Two independent replicate experiments were performed at each time point.
2013-11-27 | E-GEOD-51426 | biostudies-arrayexpress
Project description:To comprehend the gene expression profile in rice panicle under high temperature, Agilent 4×44k rice oligo microarray experiments were carried out using rice panicle of post-meiosis at 0 min, 10min, 20 min, 60 min, and 2 hr after the treatment of 40 degree centigrade, and the differentially expressed genes at the time course were involved in binding, catalysis, stress response, and cellular process. The significantly expressed genes were mainly up-regulated. Among HR genes, the predominant transcription factor gene families were Hsf, NAC, AP2/ERF, WRKY, MYB, and C2H2. The MapMan analysis demonstrated that, under heat treatment, the HR genes were enriched in the pathways related to biotic stress, abiotic stress including heat and cold, and cell cycle and development, ubiquitin-proteasome , lipid and secondary metabolisms, which revealed the great importance of cross-talk and protein homeostasis in response to heat in rice panicle of post-meiosis.
2013-11-27 | GSE51426 | GEO
Project description:Bacillus subtilis is exposed to a wide range of transitory stress and starvation conditions. Here we investigate the expression changes observed in the B. subtilis wild type strain 168 and its isogenic sigB mutant(BSM29) with respect to each stress condition tested. Gene expression was queried for the stress conditions: ethanol-, butanol-, osmotic- and oxidative stress, heat shock, low temperature growth, glucose as well as oxygen limitation. For butanol-, ethanol-, osmotic-, and oxidative stress as well as heat shock : time points (0min, 5min, 10min, 15min and 20min) ; for glucose limitation and oxygen limitation : time points (0min, 15min, 30min, 45min, 60min or 90min) and for low temperature growth, samples for recording of expression values were taken during mid-exponential growth at OD540 0.9 and 1.0.
2012-03-14 | E-GEOD-32895 | biostudies-arrayexpress
Project description:To comprehend the gene expression profile in rice flag leaf under high temperature, Agilent 4M-CM-^W44k rice oligo microarray experiments were carried out using rice flag leaf of reproductive stage at 0 min, 20 min, 60 min, 2 hr, 4 hr, and 8 hr after the treatment of 40 degree centigrade, and the significantly expressed genes mainly involved in transcriptional regulation, transport, protein binding, antioxidant, and stress response were identified. Among them, the predominant transcription factor gene families were Hsf, NAC, AP2/ERF, WRKY, MYB, and C2H2. KMC analysis discovered the time-dependent gene expression pattern under heat. The metabolism pathway analysis demonstrated that, under heat treatment, glycolysis and ubiquitin-proteasome was enhanced, and TCA, gluconeogenesis, the secondary metabolism and light-reaction in the photosystem was dramatically repressed, which revealed the great importance of maintaining primary metabolism and protein homeostasis in response to heat in rice flag leaf. Heat shock induced gene expression in rice flag leaf of reproductive stage was measured at 0 min, 20 min, 60 min, 2 hr, 4 hr, and 8 hr after the treatment of 40 degree centigrade in plant growth chamber. Two independent replicate experiments were performed at each time point.
2013-09-10 | E-GEOD-45259 | biostudies-arrayexpress
Project description:Rice reproductive development is highly sensitive to high temperature stress. In rice flowering occurs over a period of at least 5 days. Heat stress alters the global gene expression dynamics in panicle especially during pollen development, anthesis and grain filling. Some of the rice genotypes like Nagina 22 show better spikelet fertility and grain filling compared to high yielding and popular rice cultivars like IR 64. We carried out microarray analysis of 8 days heat stressed panicles of Nagina22, heat and drought tolerant aus rice cultivar and IR64, a heat susceptible indica genotype along with unstressed samples of Nagina22 and IR64 so as to understand the transcriptome dynamics in these two genotypes under heat stress and to identify the genes important for governing heat stress tolerance in rice.
2021-01-31 | GSE136746 | GEO
Project description:To comprehend the gene expression profile in rice flag leaf under high temperature, Agilent 4×44k rice oligo microarray experiments were carried out using rice flag leaf of reproductive stage at 0 min, 20 min, 60 min, 2 hr, 4 hr, and 8 hr after the treatment of 40 degree centigrade, and the significantly expressed genes mainly involved in transcriptional regulation, transport, protein binding, antioxidant, and stress response were identified. Among them, the predominant transcription factor gene families were Hsf, NAC, AP2/ERF, WRKY, MYB, and C2H2. KMC analysis discovered the time-dependent gene expression pattern under heat. The metabolism pathway analysis demonstrated that, under heat treatment, glycolysis and ubiquitin-proteasome was enhanced, and TCA, gluconeogenesis, the secondary metabolism and light-reaction in the photosystem was dramatically repressed, which revealed the great importance of maintaining primary metabolism and protein homeostasis in response to heat in rice flag leaf.
2013-09-10 | GSE45259 | GEO
Project description:Rice is highly sensitive to drought, and the effect of drought may vary with the different genotypes and development stages. Genome-wide gene expression profiling was used as the initial point to dissect molecular genetic mechanism of this complex trait and provide valuable information for the improvement of drought tolerance in rice. Affymetrix rice genome array containing 48,564 japonica and 1,260 indica sequences was used to analyze the gene expression pattern of rice exposed to drought stress. The transcriptome from leaf, root, and young panicle at three developmental stages was comparatively analyzed combined with bioinformatics exploring drought stress related cis-elements. In this study, the gene expression patterns across six tissues including leaves and roots at tillering stage and panicle elongation stage, leaves and young panicle at booting stage ( TL: leaves at tillering stage; TR: roots at tillering stage; PL: leaves at panicle elongation stage; PR: roots at panicle elongation stage; BP: young panicle at booting stage; BL: leaves at booting stage) were characterized by using the Affymetrix rice microarray platform based on a drought tolerant rice line derived from IR64.
2010-12-23 | E-GEOD-26280 | biostudies-arrayexpress
Project description:Purpose: understanding the complex genetic control of heat tolerance can be reached using whole transcriptome sequencing (RNA-seq) that is currently the most powerful tool to identify genes differentially regulated. Heat responses differ greatly between sensitive and tolerant genotypes, mainly in terms of the amount of genes and pathways involved in the response and differences in the expression level of constitutive genes in many pathways. The present study aims to compare the molecular response of Brazilian flooded rice cultivars with variable sensitivity to heat stress at anthesis stage and to discuss the possible processes involved in heat tolerance. Methods: Panicle mRNA profiles of cultivars IRGA 428 (sensitive) and BR-IRGA 409 (tolerant) were generated by deep sequencing, in triplicate (each replicate is composed of two plants), under three days of heat stress and control condition at anthesis stage, using Illumina Hiseq 2500. The sequence reads from each sample that passed quality filters were mapped independently, generating contigs that were aligned with the reference genome sequences in rice (cv. MH63-indica). The transcripts were analyzed at the expression level with statistic test (EdgeR – Rstudio) to identify the significant changes in the expression level of the genes for each treatment condition and cultivar follow by identification of metabolic pathways (MapMan and Cytoscape) based on different programs. Results: Using an optimized data analysis workflow, we identified 16,871 transcripts in the rice spikelet of sensitive and tolerant cultivars with HISAT workflow. Using filtered and aligned reads, transcript levels were used to find differentially expressed genes (DEGs) at different thermal condition and cultivars. We identified 2,064 genes for BR-IRGA 409 and 1,078 genes for IRGA 428 that showed a significant change in expression in response to heat stress (LogFC ≥0.5 and adjusted p-value <0.001). When it was examined the multi-factor responsive genes, that is genes with an interaction between cultivar and heat stress (multi-factor analysis - cultivars vs control and high temperature), it was identified 65 DEGs in response to heat stress (LogFC ≥0.5 and adjusted p-value <0.001). Comparison of our data set with other RNA-seq studies shows a significant overlap in heat responsive genes (hypergeometric enrichment test). This core set of genes common among RNA-seq studies indicates that it may be associated with basal response to heat. In the present study, genes related to light reaction pathway were induced in the panicle of the cultivar IRGA 428, while these genes in cultivar BR-IRGA 409 were already expressed highly in control conditions. The basal level of these genes in BR-IRGA 409 was as high as the heat-induced level in the sensitive IRGA 428. Photosynthesis is known to occur in rice panicles, but little has been reported about the photosynthetic characteristics of such panicles. To cope with heat stress, plants have developed a sophisticated mechanism to repair photosystem damage. Therefore, in IRGA 428 the induction of these genes suggests the activation of a repair mechanism to reverse damage on the photosynthetic apparatus caused by the heat stress. The difference in basal levels of the photosynthetic genes may be a contributing factor to the differences in spikelet fertility between the cultivars under heat stress. Conclusion: This is the first study to evaluate the heat tolerance of Brazilian rice cultivars. In panicle tissue, most canonical heat responsive genes, such as HSF family, small HSP family and FKBP family, show a similar response in both Brazilian cultivars, despite the fact that these cultivars have not been specifically selected for heat tolerance. The response of photosynthetic genes to heat stress is a major difference between the cultivars BR-IRGA 409 and IRGA 428. This study indicates that the higher basal expression of photosynthetic genes in the panicle provides improved spikelet fertility under heat stress. This may provide potential markers that can be used to identify heat tolerant genotypes among rice breeding programs. This study emphasizes that the characterization of heat stress responses in individual cultivars provides insights into both the basic mechanisms of heat response and assists with understanding the complex phenomenon of responses to high temperature stress.
2018-08-29 | GSE119109 | GEO
Project description:Small RNA sequencing libraries at 0 h, 3 h, and 48 h time points after ecdysone treatment and 20min heat shock (37 degrees celcius) in Drosophila cell culture
2015-06-17 | GSE69934 | GEO