Oryza sativa
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA141937 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR097872.fastq.gz | Fastqsanger.gz | |||
| SRR097873.fastq.gz | Fastqsanger.gz | |||
| SRR097874.fastq.gz | Fastqsanger.gz | |||
| SRR097875.fastq.gz | Fastqsanger.gz |
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Project description:This SuperSeries is composed of the following subset Series: GSE26840: Express data from rice endosperm GSE27048: Genome-wide maps of chromatin state in rice endosperm Refer to individual Series
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Project description:We report the application of single-molecule-based sequencing technology for high-throughput profiling of histone H3 trimethylation in rice endosperm. By obtaining about four hundred million bases of sequence from rice chromatin immunoprecipitated DNA, we generated genome-wide chromatin-state maps of rice endosperm. We find that the presence of H3K27me3 in either upstream or downstream of a gene is predominately associated with repression of the gene, while its absence is mainly associated with high gene expression. Examination of Histone H3 lysine 27 trimethylation in rice endosperm.
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Project description:We report the application of single-molecule-based sequencing technology for high-throughput profiling of histone H3 trimethylation in rice endosperm. By obtaining about four hundred million bases of sequence from rice chromatin immunoprecipitated DNA, we generated genome-wide chromatin-state maps of rice endosperm. We find that the presence of H3K27me3 in either upstream or downstream of a gene is predominately associated with repression of the gene, while its absence is mainly associated with high gene expression.
2011-12-06 | GSE27048 | GEO
Project description:Cellularization is a key event during the development of the endosperm. Our understanding of the developmental regulation of cellularization has been limited for plants other than Arabidopsis. We found that the activation of OsbZIP76 coincided with the initiation of cellularization of rice. Either knockdown or knockout of OsbZIP76 led to precocious cellularization. Many genes involved in endosperm development or starch biosynthesis were prematurely activated in the caryopsis at two days after fertilization. The results implied that OsbZIP76 is involved in the regulation of cellularization in rice. As a putative transcription factor, OsbZIP76 alone lacked transcriptional activation activity. However, it was able to interact with OsNF-YB9 and OsNF-YB1, two nuclear factor Y (NF-Y) family transcription factors, both in yeast and in planta. OsbZIP76 and OsNF-YB9 showed similar endosperm-preferential expression patterns and the transiently expressed proteins were colocalized in the epidermal cells of tobacco. As with osnf-yb1 mutants, the osbzip76 mutants showed reduced seed size and reduced apparent amylose content of the seeds. We also confirmed that OsbZIP76 is an imprinted gene in rice, the expression of which depended on the genetic background. Our results suggested that OsbZIP76 is an endosperm-expressed imprinted gene to regulate development of the endosperm in rice.
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Project description:Here, we present OryzaPG-DB, a rice proteome database based on shotgun proteogenomics, which incorporates the genomic features of experimental shotgun proteomics data. This version of the database was created from the results of 27 nanoLC-MS/MS runs on a hybrid ion trap-orbitrap mass spectrometer, which offers high accuracy for analyzing tryptic digests from undifferentiated cultured rice cells. Peptides were identified by searching the product ion spectra against the protein, cDNA, transcript and genome databases from Michigan State University, and were mapped to the rice genome. Approximately 3200 genes were covered by these peptides and 40 of them contained novel genomic features. Users can search, download or navigate the database per chromosome, gene, protein, cDNA or transcript and download the updated annotations in standard GFF3 format, with visualization in PNG format. In addition, the database scheme of OryzaPG was designed to be generic and can be reused to host similar proteogenomic information for other species. OryzaPG is the first proteogenomics-based database of the rice proteome, providing peptide-based expression profiles, together with the corresponding genomic origin, including the annotation of novelty for each peptide.
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Project description:Rice is one of the most important global food crops, and is also a model organism for cereal research 31 . Complete genome sequencing of rice, together with advances in transcriptomics and proteomics, has had a dramatic impact on plant growth and 5 breeding programs 32 . Genomic analysis of DNA methylation in rice has revealed methylation patterns associated with gene bodies and promoters, and the occurrence of high levels of DNA methylation in the centromeric domain 33 . A genome-wide investigation of acetylation in rice revealed that H3K9ac and H3K27ac are mainly enriched at transcription start sites associated with active transcription 34 . Furthermore, global proteome analysis has shown that phosphorylation and succinylation are involved in diverse cellular and metabolic processes 35, 36 . However, despite these considerable advances in our knowledge, additional large-scale analysis of the lysine acetylome in rice is expected to identify many more Kac sites and acetylated proteins in this improtant crop plant. In this study, affinity enrichment and high-resolution LC-MS/MS were used for large-scale analysis of the lysine acetylome in rice variety Nipponbare. In total, 1353 lysine acetylation sites were detected in 866 protein groups in rice seedlings. Proteomic analysis showed that Kac occurs in proteins involved in diverse biological processes with varied cellular functions and subcellular localization.
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Project description:The R-loop is a common chromatin feature presented from prokaryotic to eukaryotic genomes and has been revealed to be involved in multiple cellular processes and associated with many human diseases. Here, we take the advantage of our recently developed ssDRIP-seq method to profile genome-wide R-loop levels and provided a first-hand R-loop atlas of Rice (Oryza sativa) at different developmental stages.
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2004-11-08 | GSE1924 | GEO