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Identification of small RNA loci that are synthesized by RNA-dependent RNA polymerases1/2/6

ABSTRACT: To identify RDR1/2/6 dependent small RNA loci of transcribed regions under 2hr drought stress- and untreated conditions, expression profiles of small RNA between rdr1/2/6 and wild-type using hi-seq 2000.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE72982 | GEO | 2016/03/31

SECONDARY ACCESSION(S): PRJNA295538

REPOSITORIES: GEO

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Indentification samll RNA loci that are synthesized by RNA-dependent RNA polymerases1/2/6

Project description:To identify RDR1/2/6 dependent small RNA loci of transcribed regions under 2hr drought stress- and untreated conditions, expression profiles of small RNA between rdr1/2/6 and wild-type using hi-seq 2000. rdr1/2/6 and wild-type plants (Arabidopsis thaliana ecotype Columbia) were grown on MS medium for 2weeks. Then, their plants were transfered to dry plastic dish for 2 hours. small RNA fraction was s extracted from the sample using Ambion mirVana miRNA Isolation Kit. small RNA labrary was constructed using TruSeq Small RNA Library Preparation Kits and applied to hi-seq 2000.

2016-03-31 | E-GEOD-72982 | biostudies-arrayexpress

Biological function of antisense RNAs that are synthesized by RNA-dependent RNA polymerases under rehydration

2016-07-31 | GSE83846 | GEO

Biological function of antisense RNAs that are synthesized by RNA-dependent RNA polymerases under rehydration

Project description:To identify RDR1/2/6-dependent antisense RNA loci under 2hr drought stress and 2hr rehydration, expression profiles of Poly (A+) RNA between rdr1/2/6 and wild-type using the custom microarray (GPL19830) were analyzed. rdr1/2/6 and wild-type plants (Arabidopsis thaliana ecotype Columbia) were grown on MS medium for 2 weeks. Then, the plants were transferred to plastic dish and kept for 2hr. Poly (A+) RNA from 100Î¼g total RNA by treating with Ambion Poly A purist twice.5 ng of Poly (A+) RNA were used for the expresion profiling using the custom array (GPL19830).

2016-07-31 | E-GEOD-83846 | biostudies-arrayexpress

Biological function of antisense RNAs that are synthesized by RNA-dependent RNA polymerases under abiotic stress

2016-07-31 | GSE72309 | GEO

Biological function of antisense RNAs that are synthesized by RNA-dependent RNA polymerases under abiotic stress

Project description:To identify RDR1/2/6-dependent antisense RNA loci under 2hr drought stress, expression profiles of Poly (A+) RNA and Poly (A-) RNA between rdr1/2/6 and wild-type using the custom microarray (GPL19830) were analyzed. rdr1/2/6 and wild-type plants (Arabidopsis thaliana ecotype Columbia) were grown on MS medium for 2 hours. Then, the plants were transferred to plastic dish and kept for 1 week. Poly (A+) RNA and Poly (A-) fractions were separated from 100Î¼g total RNA by treating with Ambion Poly A purist twice. Poly (A-) RNA sample was prepared by depleting rRNA using Invitrogen RiboMinus Plant Kit. 5 ng of Poly (A+) RNA and 1.4 Î¼g of Poly (A-) RNA samples were used for the expression profiling using the custom array (GPL19830).

2016-07-31 | E-GEOD-72309 | biostudies-arrayexpress

Deep sequencing of uncapped RNA in rdr1/2/6 and wild-type Arabidopsis plants

Project description:Our previous experiment on biogenesis mechanisim of stress-inducible antisense RNAs showed that accumulation of antisense RNA in a drought-inducible gene, RD29A locus was decreased in rdr1/2/6 triple mutant. The RD29A antisense RNA did not have CAP structure and poly(A) tail. We applied deep sequencing of uncapped RNA using SOLiD to identify RDR1/2/6-mediated antisense RNAs in genome-wide. We identified 1) 975 RDR1/2/6-mediated antisense RNA loci on which no. of sequence tags is decreased in rdr1/2/6 and makes peak and 2) 1,613 RDR1/2/6-mediated antisense RNA loci on which no. of the tags is decreased in rdr1/2/6 and enriched on antisense strand of exons. They were grouped into 1,959 non-redundant loci.

2017-07-13 | GSE39033 | GEO

Deep sequencing of small RNAs

Project description:Recently, we demonstrated that RDRs had a general function to synthesize antisense RNAs from sense transcripts of protein-coding genes. In this study, we analyzed whether RDR-mediated antisense RNAs were processed into small RNAs by deep sequencing using SOLiD. Deep sequencing identified 1,645 RDR1/2/6-mediated smRNA loci in drought stress and control conditions.

2017-07-13 | GSE39024 | GEO

Comparative analysis of drought-responsive transcriptome in soybean lines contrasting for canopy wilting

Project description:Purpose: Next-generation sequencing (NGS) has revolutionized systems-based analysis of abiotic stress molecular pathways. The goals of this study are to compare NGS-derived transcriptome profiling (RNA-seq) of contrasting slow wilting lines to quantify transcript abumdance under drought stress condition Methods: The three biological replicates of DS line, Pana (control and drought samples) and DT line, PI 567690 (control and drought samples) leaf sample RNA were multiplexed and sequenced on an Illumina Hi-Seq 2000 platform. The RNA concentration of each sample was approximately 200ng/µl with a quantity of 50 µl.isoform level with two methods: Burrows–Wheeler Aligner (BWA) followed by ANOVA (ANOVA) and TopHat followed by Cufflinks. qRT–PCR validation was performed using TaqMan and SYBR Green assays

2015-08-31 | E-GEOD-70310 | biostudies-arrayexpress

A plant immune protein enables broad antitumor response by rescuing microRNA deficiency in cancers [RNA-seq and smallRNA-seq]

Project description:Cancer cells are featured with uncontrollable activation of cell cycle and proliferation,and microRNA deficiency drives tumorigenesis. The RNA-dependent RNA polymerase (RDR) is essential for small RNA-mediated immune response in plants, but absent in vertebrates with adaptive immunity. Here we show that ectopic expression of plant RDR1 can generally inhibit the proliferation of different cancer cells. Interestingly, we find that abnormal AGO2-free microRNA isoforms with 1-nucleotide shortening at the 3’ end are widely accumulated in many tumors. RDR1 with nucleotidyltransferase activity can recognize and modify these problematic microRNAs with mononucleotides to restore their AGO2 loading efficiency, which eventually rescues microRNA deficiency and elevates microRNA expression to target cell cycle in cancer specifically. The wide antitumor effects of RDR1 can be visualized in multiple xenograft tumor models in vivo, which can be realized by adeno-associated virus-mediated delivery. Altogether, we develop a broad microRNA-mediated antitumor stratagem using the plant immune protein RDR1.

2022-03-24 | GSE199309 | GEO

Virus infection triggers widespread silencing of host genes by a distinct class of endogenous siRNAs in Arabidopsis

Project description:Virus infection triggers widespread silencing of host genes by a distinct class of endogenous siRNAs in Arabidopsis This study constructed and sequenced two independent small RNA libraries from the upper uninoculated leaves of (i) WT Arabidopsis plants 14 d after mock inoculation and of (ii) rdr1 rdr6 plants 14 d after infection with Fny CMV-Δ2b, and one library each from the upper uninoculated leaves of (iii) WT, (iv) rdr1, and (v) rdr6 plants 14 d after infection with TuMV-GFP. Coimmunoprecipitation with FLAG- and HA-specific antibodies was used to obtain (vi,vii) AGO1 and (viii,ix) AGO2 complexes, respectively, from the FLAG-AGO1/ago1-36 and HA-AGO2 plants 14 d after infection with Fny CMV-Δ2b for extracting total loaded small RNAs for the construction and sequencing of small RNA libraries.

2014-08-30 | E-GEOD-60929 | biostudies-arrayexpress

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