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Arabidopsis thaliana

ABSTRACT: Genome-wide identification of non-coding RNAs targeted by XRN exoribonucleases in collaboration with FRY1 using RNA-Seq in Arabidopsis thaliana.

OTHER RELATED OMICS DATASETS IN: E-GEOD-34654

PROVIDER: PRJNA151239 | ENA |

REPOSITORIES: ENA

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Genome-wide identification of non-coding RNAs targeted by XRN exoribonucleases in collaboration with FRY1 using RNA-Seq in Arabidopsis thaliana.

2012-05-03 | GSE34654 | GEO

Genome-wide identification of non-coding RNAs targeted by XRN exoribonucleases in collaboration with FRY1 using RNA-Seq in Arabidopsis thaliana.

Project description:We report new insight of non-coding RNA degradation mediated by XRN exoribonucleases and FRY1 in Arabidopsis thaliana. We suggest that XRN3, in combination with FRY1, is required to prevent the accumulation of 3’ extensions that arise from thousands of mRNA and miRNA precursor transcripts. Examination of genome-wide transcriptomes of Arabidopsis genotypes such as fry1-6, xrn3-3, xrn2-1xrn3-3, xrn2-1xrn4-6 and xrn3-3xrn4-6 using directional RNA-Seq method.

2012-05-02 | E-GEOD-34654 | biostudies-arrayexpress

Transcription profiling by array of a stably RNAi-silenced nuclear 5’-3’ exonuclease XRN3 mutant line in Arabidopsis thaliana after transcriptional inhibition with cordycepin

Project description:In Arabidopsis thaliana two nuclear 5'-3' exonucleases, XRN2 & 3, are involved in the degradation and processing of several classes of nuclear RNAs and in transcription termination of RNA polymerase II. The role of XRN3 in Pol II transcription termination is investigated by combining two different types of RNA-seq data for Col-0 background WT and xrn3-8 mutant A. thaliana seedlings. The data for the experiment comprises single molecule Direct RNA Sequencing of unamplified RNA (3x WT, 4x xrn3-8 mutant) and high-depth Illumina strand-specific short read sequencing of PCR amplified ribosomal-RNA depleted RNA (Illumina TruSeq stranded ribozero Plant kit, 3x WT, 3x xrm3-8 mutant). In the xrn3 mutant, these data reveal a widespread accumulation of non-coding intergenic transcripts (xrn3-associated transcripts - XATs) generated by Pol II read-through transcription that are usually polyadenylated and lack the 5' cap structure. This data highlights the important role of exoribonucleases in the torpedo mechanism of Pol II transcription termination and show that a global disturbance in this process significantly impacts both gene expression and transcriptome integrity.

2019-09-02 | E-MTAB-5137 | biostudies-arrayexpress

Direct RNA Sequencing of polyadenylated RNA & high-depth Illumina strand-specific, short read RNA-seq of a stably RNAi-silenced nuclear 5'-3' exonuclease XRN3 mutant line in Arabidopsis thaliana

2019-09-02 | E-MTAB-5132 | biostudies-arrayexpress

Relevance study and prognostic analysis for intestinal flora disorders affecting non-coding RNA networks in patients with advanced lung cancer

Project description:Interventions: Case series:Nil Primary outcome(s): intestinal microecological disorders;blood non-coding RNAs and immune status Study Design: Randomized parallel controlled trial

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Arabidopsis mRNA decay landscape shaped by XRN 5′-3′ exoribonucleases

Project description:XRN 5′-3′ exoribonucleases play crucial roles in the control of RNA processing, quality, and quantity in eukaryotes. Although genome-wide profiling of RNA decay fragments is now feasible, how XRNs shape the plant mRNA degradome remains elusive. Here, we profiled and analyzed the RNA degradomes of the Arabidopsis wild type and mutants with defects in XRN activity. Deficiency of nuclear XRN3 or cytoplasmic XRN4 but not nuclear XRN2 activity largely altered Arabidopsis mRNA decay profiles. In addition to the primary XRN4 substrates derived from decapping and microRNA-directed slicing, terminating ribosome- and exon junction complex-protected fragments produced from XRN4-mediated cytoplasmic decay also represent the most abundant decay intermediates of Arabidopsis mRNAs. Short excised linear introns and cleaved pre-mRNA fragments downstream of polyadenylation sites were polyadenylated and stabilized in the xrn3 mutant, demonstrating the function of XRN3 in the removal of cleavage remnants from pre-mRNA processing. Further analysis of stabilized XRN3 substrates confirmed that polyadenylation cleavage frequently occurs after an adenosine. An increase in decay intermediates with 5′ ends upstream of a consensus motif in the xrn4 mutant suggests an endonucleolytic cleavage mechanism targeting the 3′ untranslated region of many Arabidopsis mRNAs. However, analysis of decay fragments stabilized in the xrn4 mutant indicated that, except for microRNA-directed slicing, endonucleolytic cleavage events in the coding sequence might rarely result in major decay intermediates. Together, the results of this study reveal major substrates and products of nuclear and cytoplasmic XRNs along Arabidopsis transcripts and provide a basis for precise interpretation of RNA degradome data.

2022-09-06 | GSE205190 | GEO