Biological Activity of Ag and Cu Monometallic Nanoparticles and Ag‐Cu Bimetallic Nanocomposites against Plant Pathogens and Seeds

Abstract

The antibacterial activities of silver (Ag) and copper (Cu) monometallic and bimetallic nanoparticles (MNPs and BNPs) against the most economically important and common plant bacterial diseases in Kyrgyzstan were tested, as well as their phytotoxic effects on wheat and corn seeds. To achieve this, a range of Ag and Cu MNPs and BNPs were synthesized using different methods and were tested at different concentrations to compare their biological effects. The antibacterial activities of Ag and Cu MNPs and Ag-Cu BNPs against the plant pathogenic bacteria Erwinia amylovora, Pseudomonas syringae, and Pectobacterium carotovorum were evaluated. Of the three pathogens, Ps. syringae was found to be the most sensitive to NPs. The antimicrobial activities of the tested NPs showed significant positive correlations with the concentration; hence, there was a dose-dependent effect. Due to their antibacterial properties, these Ag-Cu nanocomposites have high potential in plant protection applications.

Cost-Effective Bio-Synthesis and characterization of Encapsulated Cu, Ag, and Magnetic Cu-Ag Bimetallic Nanoparticles

“…Ag-Cu BNPs were originally tested for their antibacterial e cacy against Ps. syringae, P. carotovorum, and E. amylovora, three Gram-negative plant pathogenic bacteria [52]. Comparing the MNPs to the Ag-Cu BNPs, the activity was much greater.…”

“…Comparing the MNPs to the Ag-Cu BNPs, the activity was much greater. The composites have shown substantial action against all three of the studied pathogens even at a low dose (1 mg/l) [52]. With regard to all three diseases, the Cu-Ag nanocomposites that were created in an alkaline solution showed the greatest activity.…”

Copper and Copper-Based Nanoparticles in Medicine—Perspectives and Challenges

“…Copper and copper-based nanoparticles have excellent antibacterial activity against Staphylococcus aureus (including methicillin-resistant S. aureus ), Bacillus subtilis , Proteus vulgaris , and Escherichia coli [ 29 , 30 ]. Copper-based nanoparticles were found to have even higher antibacterial properties than Ag NPs [ 31 ], and some reports have shown a synergistic antibacterial effect of copper or copper oxide(II) nanoparticles in combinations with silver nanoparticles [ 32 , 33 ].…”

Characterization, dose dependent assessment of hepatorenal oxidative stress, hematological parameters and histopathological divulging of the hepatic damages induced by Zinc oxide nanoparticles (ZnO-NPs) in adult male Sprague Dawley rats

“…Nanotechnology is the branch of science that deals with the production and development of nanomaterials which are less than 100 nm in size ( Hong et al 2022 ). Nanoparticles are being studied due to various distinct properties i.e., great surface area towards volume ratio, great surface adsorption capability and more reactiveness ( Doolotkeldieva et al 2022 ). Among nanoparticles Zinc oxide nanoparticles (ZnO-NP) are the third highest manufactured nano metal globally after Silicon dioxide as well as Titanium dioxide nanoparticles ( Swain et al, 2016 , Rajput et al, 2018 ).…”