Aspergillus-derived β-glucan nanoparticles: a dual strategy for management and tomato plant growth enhancement.

Introduction: A soilborne Ascomycete, , is the causative agent of wilt disease, posing a significant threat to tomato plants and severely impacting global tomato production. Chemical fungicides are the primary strategy for controlling it. Employing fungicides arbitrarily and in huge dosages can pollute the environment and harm field workers and customers.

Synthesis of Nickel-Chitosan Nanoparticles for Controlling Blast Diseases in Asian Rice.

Rice blast caused by Pyricularia oryzae is one of most devastating fungal diseases in rice, reducing the annual yield of rice worldwide. As an alternative to fungicide for curbing rice blast, synthesis of nickel-chitosan nanoparticles (Ni-Ch NPs) was performed with nickel chloride and assessed its efficacy in inflating plant growth and hindrance of Pyricularia oryzae (blast pathogen). Characterization of Ni-Ch NPs from SEM, TEM, and DLS analyses showed smooth- and spherical-shaped nanoparticles in the range of 20-70 nm.

Tea polyphenols mediated biogenic synthesis of chitosan-coated cerium oxide (CS/CeO) nanocomposites and their potent antimicrobial capabilities.

In the present study, we hypothesized that novel nanocomposites of chitosan-coated cerium oxide (CS/CeO NCs) derived from aqueous extracts of tea polyphenols would be stabilized and reduced by using green chemistry. The UV-visible spectrum of the synthesized material revealed an SPR peak at 279 nm, and the morphological characteristics of nanoparticles (NPs) as a uniformly distributed spherical shape with a size range of 20 nm were confirmed by field emission scanning electron microscopy (FESEM). The Fourier transform infrared spectroscopy (FTIR) spectrum illustrated the amino groups of chitosan-coated with CeO NPs on the surface.

Biosynthesis of chitosan-coated iron oxide (FeO) hybrid nanocomposites from leaf extracts of L. and study on their antibacterial potentials.

In this study, we prepared chitosan (CS)-coated iron oxide (FeO) nanocomposites (NCs) by employing the aqueous leaf extract of L. and evaluated its antimicrobial potential. The characterization of hybrid CS-FeO NCs was performed using Fourier-transform infrared spectroscopy (FTIR) analysis to evaluate the chemical bonding of chitosan to nanoparticles (NPs).

Antibacterial and Antibiofilm Formation Activities of Pyridinium-Based Cationic Pillar[5]arene Against .

An omnipresent pathogenic bacterium, ( PAO1), is easy to contaminate environmental water or foods, causing daily food spoilage and infections. The biofilm-forming ability and bacterial resistance of PAO1 make it difficult to be eradicated by traditional bacteriostatic agents. In this work, we designed and synthesized a pyridinium-based pillar[5]arene (PP5), while trimethylammonium-based pillar[5]arene (TP5) was used as a control compound.

Application of Copper-Chitosan Nanoparticles Stimulate Growth and Induce Resistance in Finger Millet (Eleusine coracana Gaertn.) Plants against Blast Disease.

Copper-chitosan nanoparticle (CuChNp) was synthesized and used to study its effect on finger millet plant as a model plant system. Our objective was to explore the efficacy of CuChNp application to control blast disease of finger millet. CuChNp was applied to finger millet either as a foliar spray or as a combined application (involving seed coat and foliar spray).

Chitosan nanoparticle induced defense responses in fingermillet plants against blast disease caused by Pyricularia grisea (Cke.) Sacc.

The in vitro antifungal properties of chitosan nanoparticle and its role in protection of fingermillet plants from blast disease were evaluated. Chitosan nanoparticle inhibited the radial growth of Pyricularia grisea indicating the antifungal property. Application of chitosan nanoparticle delayed blast symptom expression on fingermillet leaves for 25days while it was on 15day in control plants.

Preparation of Chitosan nanoparticles and its effect on detached rice leaves infected with Pyricularia grisea.

The aim of the present study was to prepare chitosan nanoparticles to evaluate their effect on protection of rice plants from blast fungus. Nanoparticles were prepared using the ionic gelation method by the interaction of Chitosan and sodium tripolyphosphate. The particle size, polydispersity index, zetapotential and structure was confirmed by DLS, FTIR, TEM and XRD.