Ontology highlight
ABSTRACT:
PROVIDER: PRJNA415558 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR6206960.fastq.gz | Fastqsanger.gz |
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Project description:We report the application of small RNA sequencing (Illumina) technology for the identification of miRNA from root and leaf tissues of pokkali rice cultivar grown under normal and salt stress conditions. We used this data to predict and identify known and novel miRNAs.
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Project description:We report the application of small RNA sequencing (Illumina) technology for the identification of miRNA from panical and flag leaf tissues of pusa basmati rice cultivar grown under normal and heat stress conditions. We used this data to predict and identify known and novel miRNAs.
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2021-02-01 | GSE111768 | GEO
Project description:Senescence is the ultimate stage of plant development. Among the different levels of senescence processes, flag leaf senescence plays a crucial role in determining grain quality in rice. In the present study, efforts are made to identify the possible involvement of miRNAs in flag leaf senescence. Four small RNA libraries were generated from different stages of flag leaf senescence and sequenced by Illumina deep sequencing. A total of 29 known miRNA families and 494 novel miRNAs were identified in the senescing flag leaves. 21 known and 116 novel miRNAs exhibited differential expression pattern. Computational prediction and analysis of putative targets of detected miRNAs revealed that miRNAs regulate the flag leaf senescence mainly by regulating transcription factors and hormone metabolism genes. The present study gives a clue about the senescence-associated miRNAs which can be used as a tool for manipulating flag leaf senescence in rice and other crops.
2021-11-30 | GSE123171 | GEO
Project description:Purpose: MicroRNAs (miRNAs) are ubiquitous components of endogenous plant transcriptome. miRNAs are small, single-stranded and ~21 nt long RNAs which regulate gene expression at the post-transcriptional level and are known to play essential roles in various aspects of plant development and growth. Previously, a number of miRNAs have been identified in potato through in silico analysis and deep sequencing approach. However, identification of miRNAs through deep sequencing approach was limited to a few tissue types and developmental stages. This study reports the identification and characterization of potato miRNAs in three different vegetative tissues and four stages of tuber development by high throughput sequencing. Results: Small RNA libraries were constructed from leaf, stem, root and four early developmental stages of tuberization and subjected to deep sequencing, followed by bioinformatics analysis. A total of 89 conserved miRNAs (belonging to 33 families), 147 potato-specific miRNAs (with star sequence) and 112 candidate potato-specific miRNAs (without star sequence) were identified. The digital expression profiling based on TPM (Transcripts Per Million) and qRT-PCR analysis of conserved and potato-specific miRNAs revealed that some of the miRNAs showed tissue specific expression (leaf, stem and root) while a few demonstrated tuberization stage-specific expressions. Targets were predicted for identified conserved and potato-specific miRNAs, and predicted targets of four conserved miRNAs, miR160, miR164, miR172 and miR171, which are ARF16 (Auxin Response Factor 16), NAM (NO APICAL MERISTEM), RAP1 (Relative to APETALA2 1) and HAIRY MERISTEM (HAM) respectively, were experimentally validated using 5M-bM-^@M-2RLM-RACE (RNA ligase mediated rapid amplification of cDNA ends). Gene ontology (GO) analysis for potato-specific miRNAs was also performed to predict their potential biological functions. Conclusions: We report a comprehensive study of potato miRNAs at genome-wide level by high-throughput sequencing and demonstrate that these miRNAs have tissue and/or developmental stage specific expression profile. Also, predicted targets of conserved miRNAs were experimentally confirmed for the first time in potato. Our findings indicate the existence of extensive and complex small RNA population in this crop and suggest their important role in pathways involved in diverse biological processes, including tuber developmental process. Total seven (Leaf, Root, Stem, Potato Tuber stage 0(PT0),Potato Tuber stage 1(PT1),Potato Tuber stage 2(PT2),Potato Tuber stage 3(PT3) ) small RNA libraries were consctructed and sequenced by deep sequencing using Illumina GAIIx.
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Project description:We report that there are at least 236 known miRNAs expressed in safflower, of which 100 miRNAs with relatively high expression level exhibited evolutionary conservation across multiple plants. Comparison of their expression patterns among different tissues shows that a total of 116, 133 and 128 miRNAs are significantly differentially expressed between safflower seed/leaf, seed/petal and leaf/petal. Meanwhile, interestingly, the majority of the most significantly differentially expressed miRNAs between tissues are tissue-specific miRNAs. In addition, 15 putative novel miRNAs have been identified in safflower. The small RNA transcriptomes obtained in this study provide a basis for further investigation of the physiological roles of identified miRNAs in safflower. Investigate the small RNA transcriptomes in 3 tissues
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Project description:We report that there are at least 236 known miRNAs expressed in safflower, of which 100 miRNAs with relatively high expression level exhibited evolutionary conservation across multiple plants. Comparison of their expression patterns among different tissues shows that a total of 116, 133 and 128 miRNAs are significantly differentially expressed between safflower seed/leaf, seed/petal and leaf/petal. Meanwhile, interestingly, the majority of the most significantly differentially expressed miRNAs between tissues are tissue-specific miRNAs. In addition, 15 putative novel miRNAs have been identified in safflower. The small RNA transcriptomes obtained in this study provide a basis for further investigation of the physiological roles of identified miRNAs in safflower.
2010-11-06 | GSE25165 | GEO
Project description:In this study, a small RNA library from maize seed 24 hours after imbibition was sequenced by the Solexa technology. A total of 11,338,273 reads were obtained. 1,047,447 total reads representing 431 unique sRNAs matched to known maize miRNAs. Further analysis confirmed the authenticity of 115 known miRNAs belonging to 24 miRNA families and the discovery of 167 novel miRNAs in maize. Both the known and the novel miRNAs were confirmed by sequencing of a second small RNA library constructed the same way as the one used in the first sequencing. We also found 10 miRNAs that had not been reported in maize, but had been reported in other plant species. All novel sequences had not been earlier described in other plant species. In addition, seven miRNA* sequences were also obtained. Putative targets for 106 novel miRNAs were successfully predicted. Our results indicated that miRNA-mediated gene expression regulation is present in maize imbibed seed. This study led to the confirmation of the authenticity of 115 known miRNAs and the discovery of 167 novel miRNAs in maize. Identification of novel miRNAs resulted in significant enrichment of the repertoire of maize miRNAs and provided insights into miRNA regulation of genes expressed in imbibed seed. Discovery of novel miRNAs involved in imbibed maize seed by deep sequencing 2 independent small RNA libraries
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Project description:High-throughput sequencing was performed to build four sRNA libraries (each sample with two replications) derived from shoot tips and mature leaf tissues of P. tomentosa. Millions of small RNA (sRNA) reads were obtained, and many known and novel miRNAs in SAM and leaf libraries were established. Several miRNAs that were differentially expressed between the SAM and its surrounding tissues, and their targets involved in important biological processes were identified and analyzed. Our study provide insights for better understanding the regulatory mechanisms of miRNAs involved in the SAM of woody plants.
2017-06-22 | GSE100282 | GEO
Project description:miRNAs are small non-coding regulatory RNAs that play important functions in the regulation of gene expression at the post-transcriptional level by targeting mRNAs for degradation or by inhibiting protein translation. Eugenia uniflora is a plant native to tropical America with pharmacological and ecological importance without previous studies about its gene expression and regulation. To date, there is not miRNAs reported in species of Myrtaceae. A small RNA library was constructed to identify miRNAs in Eugenia uniflora. Solexa technology was used to perform high throughput sequencing of the library and the data obtained was analysed using bioinformatics tools. From 14,489,131 clean reads, we obtained 1,852,722 small RNAs representing 45 known miRNA families that have been identified in other plant species. Further analysis using contigs assembled from Illumina mRNA sequencing of leaves from the same individual allowed the prediction of secondary structures of 25 known and 17 novel miRNAs. Potential targets were predicted for the most abundant mature miRNAs in the identified pre-miRNAs based on sequence homology. This study provide the first large scale identification of miRNAs and their potential targets of a species from Myrtaceae without previous genomic sequence resources. Our study provides more information about the evolutionary conservation of the regulatory network of miRNAs in plants and highlights the miRNAs species-specific. microRNA profiles in 1 leaf library of Eugenia uniflora by deep sequencing (Illumina HiSeq2000)
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