Journal
JOURNAL OF CLUSTER SCIENCE
Volume 31, Issue 5, Pages 1021-1040Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10876-019-01707-4
Keywords
Solanum tuberosum; Potato pathogens; Latent infection; Quarantine diseases; Nano-drug; Gamma rays; Antibacterial activity; Mono-dispersed CuO NPs
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Funding
- Nanotechnology Research Unit, Drug Microbiology Lab., Drug Radiation Research Department, NCRRT, Egypt
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The novelty of this work is to estimate the antibacterial and antibiofilm capabilities of the mono-dispersed copper oxide nanoparticles (CuO NPs)-streptomycin nano-drug which synthesized by a cost-effective and eco-friendly gamma irradiation method. The incorporated CuO NPs-streptomycin was fully defined by UV-Vis., XRD, FTIR, HRTEM, DLS, HRSEM and EDX elemental analysis. In vitro antibacterial and antibiofilm activities of CuO NPs-streptomycin were examined towards pathogenic bacteria-causing brown, ring, soft rot and black leg diseases in potato plant. The proposed reaction mechanism regarding the synergistic potential between CuO NPs and streptomycin was estimated. The incorporated CuO NPs-streptomycin displayed an absorption peak at 585.0 nm specific for the Surface Plasmon Resonance. Results achieved from HRTEM, HRSEM and XRD verified the mono-dispersed crystalline character of the fabricated CuO NPs-streptomycin with a common particle size of 20.20 nm. CuO NPs-streptomycin exhibited an encouraging antibacterial activity against Clavibacter michiganensis subsp. sepedonicus (35.50 mm ZOI). Additionally, CuO NPs-streptomycin displayed enhanced biofilm inhibition percentage of about 90.99%, 84.23%, and 83.42% toward C. michiganensis subsp. sepedonicus, Ralstonia solanacearum, and Dickeya solani, respectively. Consequently, according to the prominent characteristics, this research could provide insights for determining dangerous agricultural challenges, potato packaging and processing and new nano-drug formula for invading potato pathogenic bacteria through the cultivation.
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