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Stress responsive gene expression in rice cultivars

ABSTRACT: In this study, we aim to present a global view of transcriptome dynamics in different rice cultivars (IR64, Nagina 22 and Pokkali) under control and stress conditions. More than 50 million high quality reads were obtained for each tissue sample using Illumina platform. Reference-based assembly was performed for each rice cultivar. The transcriptome dynamics was studied by differential gene expression analyses between stress treatment and control sample.

ORGANISM(S): Oryza sativa

PROVIDER: GSE60287 | GEO | 2015/12/31

SECONDARY ACCESSION(S): PRJNA257964

REPOSITORIES: GEO

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Stress responsive gene expression in rice cultivars

Project description:In this study, we aim to present a global view of transcriptome dynamics in different rice cultivars (IR64, Nagina 22 and Pokkali) under control and stress conditions. More than 50 million high quality reads were obtained for each tissue sample using Illumina platform. Reference-based assembly was performed for each rice cultivar. The transcriptome dynamics was studied by differential gene expression analyses between stress treatment and control sample. We collected seedlings of three rice cultivars subjected to control (kept in water), desiccation (transferred on folds of tissue paper) and salinity (transferred to beaker containing 200 mM NaCl solution) treatments. Total RNA isolated from these tissue samples was subjected to Illumina sequencing. The sequence data was further filtered using NGS QC Toolkit to obtain high-quality reads. The filtered reads were mapped to Japonica reference genome using Tophat software. Cufflinks was used for reference-based assembly and differential gene expression was studied using cuffdiff software. The differentially expressed genes during various abiotic stress conditions were identified.

2015-12-31 | E-GEOD-60287 | biostudies-arrayexpress

Single-base resolution DNA methylation maps of rice cultivars under control and stress conditions

Project description:In this study, we aim to generate genome-scale DNA methylation profiles at single-base resolution in different rice cultivars (IR64, Nagina 22 and Pokkali) under control and stress conditions. Using high-throughput whole genome bisulfite Sequencing, we generated DNA methylation maps covering the vast majority of cytosines in the rice genome. More than 152 million high quality reads were obtained for each tissue sample using Illumina platform. We discovered extensive DNA methylation in rice cultivars, identified the context and level of methylation at each site.Numerous differentially methylated regions (DMRs) among different cultivars under control and stress conditions were identified and many of them were associated with differential gene expression. The high resolution methylome maps of different rice genotypes and differentially methylated regions will serve as reference for understanding the epigenetic regulation of stress responses in plants. Whole genome bisulfite sequencing of seven control/stressed samples from three rice cultivars (IR64, N22 and Pokkali)

2015-12-31 | E-GEOD-60288 | biostudies-arrayexpress

Single-base resolution DNA methylation maps of rice cultivars under control and stress conditions

2015-12-31 | GSE60288 | GEO

Transcriptome dynamics of rice spikelets under heat stress treatment

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

Expression data for heat tolerant and susceptible cultivars of indica rice

Project description:Heat stress along with other abiotic stresses is one of the major factors affecting crop health and overall yield in a tropical country like India. Thus, there is an urgent need to understand the dynamics of heat responsiveness at the molecular as well as physiological level. Fortunately, India has a number of indigenous varieties that show tolerance to extremes in temperature during the scorching summer months. The cultivar Annapurna is a fast growing dwarf variety of rice that is heat tolerant while the most widely grown indica rice in South and Southeast Asia, IR64, is susceptible to high temperatures. These two cultivars present an excellent opportunity to study the differences in response to heat stress, and, thereby help in elucidating the genes involved in conferring tolerance to high temperature. The present study involves transcript profiling of the two cultivars, Annapurna (tolerant) and IR64 (susceptible) under both control and heat stressed conditions.

2021-07-26 | GSE41648 | GEO

Uncovering the protein alterations in anther tissues of three contrasting rice types in response to short-term and long-term heat stress conditions

Project description:Heat stress drastically affects anther tissues resulting in poor plant fertility, necessitating an urgent need to determine the key proteins associated in the response of anthers to heat stress. Employing quantitative proteome analysis, we identified several cultivar-specific protein alterations in anthers of Moroberekan (Japonica, heat sensitive), IR64 (Indica, moderately heat tolerant), and Nagina 22 (Aus, heat tolerant) rice types following short-term (ST_HS; one cycle of 42°C, 4 hours before anthesis) and long-term (LT_HS; 6 cycles of 38°C, 6 hours before anthesis) heat treatments. The protein numbers were higher in Nagina 22 than IR 64 and Moroberekan anthers under unstressed and heat stress. The proteins upregulated in long-term heat stress in Nagina 22 were enriched in biological processes related to unfolded protein binding and carboxylic acid metabolism, including amino acid metabolism. In short-term heat stress, Nagina 22 anthers were enriched in proteins associated with vitamin E biosynthesis while proteins downregulated were related to ribosomal proteins. The expression of Hsp20, DnaJ, and Hsp101 was predominantly observed in Nagina 22. Overall, the heat response in Nagina 22 was associated with its capacity for adequate metabolic control and cellular homeostasis which may be critical for its higher reproductive thermotolerance

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Developing miRNA profiles for decoding salt stress tolerance in Pokkali rice

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2021-02-01 | GSE111767 | GEO

Identification of drought responsive genes at reproductive stage in upland rice variety Nagina22 through comparative microarray analysis

Project description:In the current study we did microarray of upland rice cultivar Nagina22 for drought stress at reproductive stage (panicle initiation) and analyzed drought stress responsive genes. We have taken flag leaf for our study as it is most essential organ for photosynthesis in rice. Normal watering Vs Drought Stress Flag leaf of Control (Three biological replicates) plant of Nagina22: C1, C2, C3 Flag leaf of drought stressed (Three biological replicates) plant of Nagina 22: S1, S2, S3

2017-12-25 | E-MTAB-4994 | biostudies-arrayexpress

Gene expression profiling of drought-sensitive (IR64) and tolerant (N22) rice cultivars

Project description:We generated the global transcriptome profile of the two rice genotypes under control and drought conditions. More than 80 million high-quality reads were obtained for each cultivar and different conditions using the Illumina platform. Reference-based assembly was generated for each cultivar and condition. Differentially expressed genes were identified between drought and control condittons for each cultivar.

2023-12-31 | GSE183894 | GEO

Global expression analysis of differential expression of genes working under Soil Water Stress condition in different genotypes of rice in Vegetative and Grain-filling stage [set 1]

Project description:One of the serious constraints to realize high level of rice crop productivity in Indian agriculture has been due to soil moisture stress (SMS) situation that growing plants often face. In order to increase or maintain the crop productivity in SMS situation our initial aim is to understand the drought response mechanism in different genotypes of rice. For thorough analysis of SMS situation in rice we have taken here two wild genotypes of rice namely Oryza nivara, Oryza rufipogan and three Indian cultivar namely Oryza Nagina-22, Oryza IR20 and Oryza Vandana, where IR20 is known to be susceptible and Vandana is known to be tolerant under SMS condition. Global analysis of transcript profiling under SMS condition reveal the actual picture of genes responsive to stress situation in different genetic background of rice. Furthermore it would help us in the selection of most desirable resource for crop breeding without compromising the yield of crop. We used the 44k rice Oligoarray from Agilent technologies to study the transcript profiling from five genotypes of rice under control, soil moisture stress and after recovery conditions during vegetative and grainfilling phase.Here in case of Nagina-22 we have taken grainfilling stage.

2016-04-01 | GSE49364 | GEO

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