CFX96 Touch Real-Time PCR Detection System, Bio-Rad, USA), transcript levels were calculated utilizing the comparative threshold (CT ) technique, with ACT2 (At3g18780) and UBQ10 (At4g05320) applied as internal controls. Gene-specific primers utilized for PCR are listed in Supplemental Table 6.Histone ImmunostainingImmunostaining analyses had been performed with rosette leaves, as described, with minor modifications (Ay et al., 2009). Briefly, immediately after post-fixation in 4 formaldehyde/1 phosphate-buffered saline (PBS), leaves have been washed in 1 PBS then blocked in 3 BSA/1 PBS. Nuclei were incubated overnight at 4 with anti-H3K9me2 (1:one hundred dilution; Abcam, USA) or anti-H3K4me3 (1:one hundred dilution; Abcam, USA) in 3 BSA/1 PBS. Soon after washing in 1 PBS three times, nuclei had been incubated with Alexa Fluor488 fluorochrome-conjugated secondary antibody (Invitrogen, USA) in PBS, and have been then counterstained with four,6-diamidino2-phenylindole (DAPI; Sigma-Aldrich, USA) in PBS. Nuclei had been examined working with a Zeiss Duo LSM700 confocal microscope (Carl Zeiss, Inc., Germany). The photos were pseudocolored, merged, and processed employing Adobe Photoshop (Adobe Systems, USA).ChIP PCRFor each experiment, 2 g of 14-day-old plants were crosslinked in 1 formaldehyde option under vacuum till the tissue became translucent. Immediately after washing twice with cold de-ionized water, tissue was ground in liquid N2 and extraction of chromatin was performed as described in Gendrel et al.Maslinic acid Purity (2002). To evaluate binding activity of VIMProtein Gel Blot AnalysisProtein gel blot evaluation was performed in accordance with Probst et al.Amiprofos methyl Purity & Documentation (2004) with minor modifications.PMID:35116795 Briefly, 500 mg of 14-day-old plant tissue was ground in liquid N2 and transferred to 1 ml of histone extraction buffer (10 mM Tris Cl (pH 7.five), two mM EDTA, 0.25 M HCl, five mM 2-mercaptoethanol,Molecular Plantand protease inhibitors), followed by sonication for ten min and centrifugation for ten min. Total soluble proteins were aggregated with five trichloroacetic acid and repelleted by centrifugation at 12 000 rpm for 30 min. Pellets were washed 3 occasions with acetone containing 0.1 2-mercaptoethanol, and re-suspended in SDS-UREA buffer (8 M urea, 1 SDS, 12.5 mM Tris Cl (pH 6.eight), 1 mM EDTA, and protease inhibitors). Proteins have been separated electrophoretically on a 15 SDS AGE gel and transferred to Immobilon PVDF membranes (Millipore, USA). Histone proteins had been probed for methylation utilizing suitable antibodies (-H3K4Me3, Upstate, USA; -H3K9Me2, -H3, Abcam, USA) and have been detected employing SuperSignal West Pico (Thermo Fisher Scientific Inc., USA).Genome-Wide Epigenetic Silencing by VIM ProteinsAy, N., Irmler, K., Fischer, A., uhlemann, R., Reuter, G., and Humbeck, K. (2009). Epigenetic programming by means of histone methylation at WRKY53 controls leaf senescence in Arabidopsis thaliana. Plant J. 58, 33346. Bernatavichute, Y.V., Zhang, X., Cokus, S., Pellegrini, M., and Jacobsen, S.E. (2008). Genome-wide association of histone H3 lysine nine methylation with CHG DNA methylation in Arabidopsis thaliana. PLoS One. 3, e3156. Bird, A. (2002). DNA methylation patterns and epigenetic memory. Genes Dev. 16, 61. Bostick, M., Kim, J.K., Esteve, P.O., Clark, A., Pradhan, S., and Jacobsen, S.E. (2007). UHRF1 plays a function in maintaining DNA methylation in mammalian cells. Science. 317, 1760764. Cao, X., and Jacobsen, S.E. (2002). Function of the Arabidopsis DRM methyltransferases in de novo DNA methylation and gene silencing. Curr. Biol. 12, 1138144. Cedar, H., and Bergman, Y. (20.
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