Adsorption of radon on silver exchanged zeolites at ambient temperatures.

Since more than 100 years, the adsorption of the radioactive noble gas radon (Rn) is performed on activated charcoal at cryogenic temperatures. There is little-if any-progress in the field of radon adsorption at ambient conditions to facilitate the development of simple and compact radon adsorption systems. We report here on the truly remarkable property of the synthetic silver-exchanged zeolites Ag-ETS-10 and Ag-ZSM-5 to strongly adsorb radon gas at room temperature.

Insights into the expression of DNA (de)methylation genes responsive to nitric oxide signaling in potato resistance to late blight disease.

Our previous study concerning the pathogen-induced biphasic pattern of nitric oxide (NO) burst revealed that the decline phase and a low level of NO, due to S-nitrosoglutathione reductase (GSNOR) activity, might be decisive in the upregulation of stress-sensitive genes histone H3/H4 methylation in potato leaves inoculated with avr . . The present study refers to the NO-related impact on genes regulating DNA (de)methylation, being in dialog with histone methylation.

Nitric Oxide Implication in Potato Immunity to via Modifications of Histone H3/H4 Methylation Patterns on Defense Genes.

Nitric oxide (NO) is an essential redox-signaling molecule operating in many physiological and pathophysiological processes. However, evidence on putative NO engagement in plant immunity by affecting defense gene expressions, including histone modifications, is poorly recognized. Exploring the effect of biphasic NO generation regulated by S-nitrosoglutathione reductase (GNSOR) activity after avr inoculation, we showed that the phase of NO decline at 6 h post-inoculation (hpi) was correlated with the rise of defense gene expressions enriched in the TrxG-mediated H3K4me3 active mark in their promoter regions.

BABA-Induced DNA Methylome Adjustment to Intergenerational Defense Priming in Potato to .

We provide evidence that alterations in DNA methylation patterns contribute to the regulation of stress-responsive gene expression for an intergenerational resistance of β-aminobutyric acid (BABA)-primed potato to . Plants exposed to BABA rapidly modified their methylation capacity toward genome-wide DNA hypermethylation. induced DNA methylation (5-mC) correlated with the up-regulation of Chromomethylase 3 (CMT3), Domains rearranged methyltransferase 2 (DRM2), and Repressor of silencing 1 (ROS1) genes in potato.

BABA-Primed Histone Modifications in Potato for Intergenerational Resistance to .

In this paper we analyzed β-aminobutyric acid (BABA)-primed epigenetic adjustment of potato cv. "Sarpo Mira" to . The first stress-free generation of the potato genotype obtained from BABA-primed parent plants via tubers and seeds showed pronounced resistance to the pathogen, which was tuned with the transcriptional memory of SA-responsive genes.

RNA and mRNA Nitration as a Novel Metabolic Link in Potato Immune Response to .

Peroxynitrite (ONOO) exhibits a well-documented nitration activity in relation to proteins and lipids; however, the interaction of ONOO with nucleic acids remains unknown in plants. The study uncovers RNA and mRNA nitration as an integral event in plant metabolism intensified during immune response. Using potato- systems and immunoassays we documented that potato immunity is accompanied by two waves of boosted ONOO formation affecting guanine nucleotides embedded in RNA/mRNA and protein tyrosine residues.