CoO Nanostructured Sensor for Electrochemical Detection of HO as a Stress Biomarker in Barley: FeO Nanoparticles-Mediated Enhancement of Salt Stress Tolerance.

This research investigates the enhancement of barley's resistance to salt stress by integrating nanoparticles and employing a nanostructured CoO sensor for the electrochemical detection of hydrogen peroxide (HO), a crucial indicator of oxidative stress. The novel sensor, featuring petal-shaped CoO nanostructures, exhibits remarkable precision and sensitivity to HO in buffer solution, showcasing notable efficacy in complex analytes like plant juice. The research establishes that the introduction of FeO nanoparticles significantly improves barley's ability to withstand salt stress, leading to a reduction in detected HO concentrations, alongside positive impacts on morphological parameters and photosynthesis rates.

Effects of focused electron beam irradiation parameters on direct nanostructure formation on Ag surfaces.

Metallic nanostructures are applied in many fields, including photonics and plasmonics, due to their ability to absorb or emit light at frequencies which depend on their size and shape. It was recently shown that irradiation by a focused electron beam can promote the growth of nanostructures on metal surfaces and the height of these structures depends on the duration of the irradiation and the material of the surface. However, the effects on growth dynamics of numerous irradiation parameters, such as beam current or angle of incidence, have not yet been studied in detail.

A non-enzymatic electrochemical hydrogen peroxide sensor based on copper oxide nanostructures.

This article describes the synthesis of nanostructured copper oxide on copper wires and its application for the detection of hydrogen peroxide. Copper oxide petal nanostructures were obtained by a one-step hydrothermal oxidation method. The resulting coating is uniform and dense and shows good adhesion to the wire surface.

Genotoxic Evaluation of FeO Nanoparticles in Different Three Barley ( L.) Genotypes to Explore the Stress-Resistant Molecules.

Sustainable agricultural practices are still essential due to soil degradation and crop losses. Recently, the relationship between plants and nanoparticles (NPs) attracted scientists' attention, especially for applications in agricultural production as nanonutrition. Therefore, the present research was carried out to investigate the effect of FeO NPs at low concentrations (0, 1, 10, and 20 mg/L) on three genotypes of barley ( L.

The Impact of Zinc Oxide Nanoparticles on Cytotoxicity, Genotoxicity, and miRNA Expression in Barley ( L.) Seedlings.

Zinc oxide nanoparticles are one of the most commonly engineered nanomaterials and necessarily enter the environment because of the large quantities produced and their widespread application. Understanding the impacts of nanoparticles on plant growth and development is crucial for the assessment of probable environmental risks to food safety and human health, because plants are a fundamental living component of the ecosystem and the most important source in the human food chain. The objective of this study was to examine the impact of different concentrations of zinc oxide nanoparticles on barley L.

ZnO-nanostructure-based electrochemical sensor: Effect of nanostructure morphology on the sensing of heavy metal ions.

ZnO nanostructures are promising candidates for use in sensors, especially in electrochemical sensors and biosensors, due to their unique physical and chemical properties, as well as sensitivity and selectivity to several types of contamination, including heavy metal ions. In this work, using the hydrothermal method, nanostructures of ZnO were synthesized in four different morphologies: nanorods, nanoneedles, nanotubes and nanoplates. To determine the peculiarities of adsorption for each morphology, a series of electrochemical measurements were carried out using these nanostructured ZnO coatings on the working electrodes, using aqueous solutions of Pb(NO) and Cd(NO) as analytes with different concentrations.

Case Study of Somaclonal Variation in Resistance Genes and in Flaxseed ( L.) Induced by Nanoparticles.

Nanoparticles influence on genome is investigated worldwide. The appearance of somaclonal variation is a cause of great concern for any micropropagation system. Somaclonal variation describes the tissue-culture-induced phenotypic and genotypic variations.

Penetration of nanoparticles in flax (Linum usitatissimum L.) calli and regenerants.

We demonstrate a method for direct delivery of metal nanoparticles to flax calli and regenerant cells by vacuum deposition of metal nanolayers on powdered hormone followed by dispersal of the combined hormone-metal in medium. The penetration and location of the gold (AuNPs) and silver (AgNPs) nanoparticles in calli and in plant regenerants were confirmed by optical absorption spectroscopy and scanning electron microscopy. We detected a significant effect of the AuNPs and AgNPs on the regeneration type of flax calli.