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EXPORTIN 1A Prevents Transgene Silencing in Arabidopsis through Modulating the Nucleo-cytoplasmic Partitioning of HDA6

ABSTRACT: EXPORTIN 1A Prevents Transgene Silencing in Arabidopsis through Modulating the Nucleo-cytoplasmic Partitioning of HDA6

PROVIDER: PRJNA488099 | ENA |

REPOSITORIES: ENA

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EXPORTIN 1A Prevents Transgene Silencing in Arabidopsis through Modulating the Nucleo-cytoplasmic Partitioning of HDA6

Project description:In eukaryotic cells, nucleo-cytoplasmic trafficking of macromolecules across the nuclear envelope is an essential process that ensures a rapid exchange of different cellular components, including proteins and RNAs, between the nucleus and cytoplasm. The significance of the nucleo-cytoplasmic trafficking of chromatin regulators in regulating DNA methylation and gene silencing is not well understood. Here, using a genetic screen, we identified XPO1A, one of the nuclear export receptors in Arabidopsis, as an anti-silencing factor that protects transgenes from transcriptional silencing. Loss-of-function of XPO1A leads to locus-specific DNA hypermethylation at transgene promoters and some endogenous loci. We found that XPO1A directly interacts with histone deacetylase HDA6 in vivo and the xpo1a mutation causes increased nuclear retention of HDA6 protein, resulting in reduced histone acetylation and enhanced transgene silencing. Our results revealed a new mechanism of epigenetic regulation through the modulation of XPO1A-dependent nucleo-cytoplasm partitioning of a chromatin regulator.

2019-01-12 | GSE119098 | GEO

Nucleo-cytoplasmic partitioning of ARF proteins controls auxin responses in Arabidopsis thaliana

Project description:The phytohormone auxin plays crucial roles in nearly every aspect of plant growth and development. The AUXIN RESPONSE FACTOR (ARF) family of transcription factors regulates auxin-responsive gene expression and exhibit nuclear localization in regions of high auxin responsiveness. Here we show that activating ARF7 and ARF19 proteins accumulate in micron-sized assemblies within the cytoplasm of tissues with attenuated auxin responsiveness. The intrinsically disordered middle region and the folded PB1 interaction domain of ARFs drive protein assembly formation. Mutation of a single lysine within the PB1 domain abrogates cytoplasmic assemblies, promotes ARF nuclear localization, and results in an altered transcriptome and morphological defects. Our data suggest a model in which ARF nucleo-cytoplasmic partitioning regulates auxin responsiveness, thus providing a mechanism for cellular competence for auxin signaling.

2019-07-24 | GSE104385 | GEO

Nucleo-cytoplasmic partitioning of ARF proteins controls auxin responses in Arabidopsis thaliana

Project description:Nucleo-cytoplasmic partitioning of ARF proteins controls auxin responses in Arabidopsis thaliana

| PRJNA412513 | ENA

RNA-seq of 14 days old arabidopsis in Col hda6 ldl1/2 and hda6/ldl1/2

Project description:We report the application ofr high-throughput profiling of total transcript in WT, hda6, ldl1/2 and hda6/ldl1/2. The total RNA were extracted and analysed by NGS to identify the differential expressed genes between WT with hda6, ldl1/2 and hda6/ldl1/2.

2021-03-30 | GSE132873 | GEO

Genome-wide maps of H3K4me2 in 14 days old WT, hda6, ldl1/2 and hda6/ldl1/2 arabidopsis

Project description:We report the application of single-molecule-based sequencing technology for high-throughput profiling of H3K4me2 in 14 days old WT, hda6, ldl1/2 and hda6/ldl1/2 arabidopsis. By obtaining sequence from chromatin immunoprecipitated DNA, we mapped genome-wide H3K4me2 levels of 14 days old WT, hda6, ldl1/2 and hda6/ldl1/2 arabidopsis. ChIP was performed using anti-H3K4me2 antibody (diagenode; C15410035), and ChIP DNA were analyzed by Illumina HiSeq 2500.

2021-03-30 | GSE133005 | GEO

Genome-wide maps of H3Ac in 14 days old WT, hda6, ldl1/2 and hda6/ldl1/2 arabidopsis

Project description:We report the application of single-molecule-based sequencing technology for high-throughput profiling of H3Ac in 14 days old WT, hda6, ldl1/2 and hda6/ldl1/2 arabidopsis. By obtaining sequence from chromatin immunoprecipitated DNA, we mapped genome-wide H3AC levels of 14 days old WT, hda6, ldl1/2 and hda6/ldl1/2 arabidopsis. ChIP was performed using anti-H3K9K14Ac antibody (Millipore; 06-599), and ChIP DNA were analyzed by Illumina HiSeq 2500.

2021-03-30 | GSE132636 | GEO

Genome-wide maps of HDA6pro::HDA6:GFP in 14 days old arabidopsis

Project description:We report the application of single-molecule-based sequencing technology for high-throughput profiling of HDA6 in 14 days old arabidopsis. By obtaining sequence from chromatin immunoprecipitated DNA, we generated genome-wide HDA6-binding maps of 14 days old arabidopsis. To reveal bound genes by HDA6, chimeric protein HDA6-GFP was expressed under HDA6 promoter in hda6 (HDA6pro:HDA6:GFP/ hda6). ChIP was performed using anti-GFP antibody (ab290; ABCAM), and ChIP DNA were analyzed by Illumina HiSeq 2500.

2021-03-30 | GSE132563 | GEO

HDA6 mediated euchromatic silencing acts independently of DNA methylation

Project description:Transcriptome of epic1 (hda6-8) a weak allele of HDA6 that does not affect DNA methylation

2015-03-11 | GSE65640 | GEO

Effect of Exportin-5 expression on Mouse fibroblasts in cell cycle re-entry phase

Project description:To analyze the effect of Exportin-5 expression on the MEF cells in cell cycle re-entry phase, we have employed whole genome microarray expression profiling on the MEF cells in cell cycle re-entry phase with and without down regulation of Exportin-5 gene. Mouse MEF cells were transfected with 60nM of siRNA targeting either Exportin-5 or negative control, and incubated for 12 hours. After incubation, cells were starved with DMEM containing 0.2% FCS for 48 hours and re-fed with DMEM containing 20%FCS for 24 hours, along with second siRNA transfection. Two independant expreiments were preformed.

2013-01-01 | E-GEOD-25498 | biostudies-arrayexpress

The Histone Deacetylases HDA6 and HDA9 coordinately regulate valve cell elongation through depressing auxin signaling in Arabidopsis

Project description:Both of Histone Deacetylases HDA6 and HDA9 belong to RPD3/HDA1 class I subfamily, and they have similar protein structure. Loss of function of HDA9 display a blunt silique. Although there is not protein-protein interaction between HDA6 and HDA9, they simultaneously loss function led to “nock-shape” silique that more seriously silique phenotype than hda9. The silique valve cell of hda9 and hda6 hda9 were longer than wild type and hda6. The transcripts level of auxin signaling related genes were mis-regulated in hda9 and hda6 hda9 silique, and GFP signaling derived by auxin response promoter DR5 were weaker in hda9 and hda6 hda9 than wild type and hda6. Thus, our findings reveal that HDA6 and HDA9 coordinately control silique valve cell elongation through affecting auxin signaling related genes expression in silique.

2018-12-30 | GSE122047 | GEO

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