Silver nanoparticles coated with chitosan against Fusarium oxysporum causing the tomato wilt

David Armando Encinas Basurto; Fracisco Alvarez Carvajal; Ana Armenta Calderon; Tania Elisa Gonzalez Soto; Edgard Esquer Miranda; Josue Juarez Onofre; Rogelio Mendez Ibarra

doi:10.18633/biotecnia.v22i3.952

Silver nanoparticles coated with chitosan against Fusarium oxysporum causing the tomato wilt

Biotecnia ◽

10.18633/biotecnia.v22i3.952 ◽

2020 ◽

Vol 22 (3) ◽

pp. 73-80 ◽

Cited By ~ 1

Author(s):

David Armando Encinas Basurto ◽

Fracisco Alvarez Carvajal ◽

Ana Armenta Calderon ◽

Tania Elisa Gonzalez Soto ◽

Edgard Esquer Miranda ◽

...

Keyword(s):

Silver Nanoparticles ◽

Fusarium Oxysporum ◽

Tomato Wilt

El daño por Fusarium oxysporum en las plantas de tomate es de gran importancia económica en todo el mundo debido a las importantes pérdidas que genera en el cultivo. Los avances en nanotecnología proporcionan alternativas que pueden aplicarse en el control de patógenos. Las nanopartículas de plata (AgNP) estabilizadas con quitosano (Cs) tienen actualmente un uso generalizado para el control de patógenos de plantas. El objetivo de la presente investigación fue determinar el efecto de la aplicación de AgNP-Cs sobre la tolerancia de plántulas de tomate y control de la marchitez vascular, provocada por el fitopatógeno. Los resultados mostraron que la aplicación de las NPs no mostró efectos negativos en el desarrollo vegetativo normal de las plántulas de tomate (hasta 2000 ppm). Las nanoestructuras fueron significativamente efectivas para inhibir el crecimiento del micelio hasta en más del 70%, además el tratamiento fue eficaz para reducir la gravedad de la enfermedad en plántulas inoculadas con Fusarium oxysporum después de 14 días post-inoculación.

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Potential antifungal effects of silver nanoparticles (AgNPs) of different sizes against phytopathogenic Fusarium oxysporum f. sp. radicis-lycopersici (FORL) strains

SN Applied Sciences ◽

10.1007/s42452-021-04524-5 ◽

2021 ◽

Vol 3 (4) ◽

Author(s):

Ilgin Akpinar ◽

Muammer Unal ◽

Taner Sar

Keyword(s):

Silver Nanoparticles ◽

Fusarium Oxysporum ◽

Antifungal Agents ◽

New Technology ◽

Economic Loss ◽

Phytopathogenic Fungi ◽

Growth Media ◽

Mycelium Growth ◽

Antifungal Effects ◽

Critical Problems

AbstractFusarium species are the primary fungal pathogen affecting agricultural foodstuffs both in crop yield and economic loss. Due to these problems, control of phytopathogenic fungi has become one of the critical problems around the World. Nanotechnology is a new technology with potential in many fields, including agriculture. This study focused on determining potential effects of silver nanoparticles (AgNPs) with different nanosizes (3, 5, 8 and 10 nm) and at different concentrations (12.5–100 ppm) against phytopathogenic Fusarium oxysporum f. sp. radicis-lycopersici (FORL) strains. The maximum antifungal activity was achieved by decreasing nanosize and increasing concentration of AgNPs. Mycelium growth abilities were decreased about 50%, 75% and 90% by AgNPs treatment with 3 nm sizes at 25 ppm, 37.5 ppm and 50 ppm concentrations, respectively. The productivity of fungal biomass in the liquid growth media was found to be too limited at the 25–37.5 ppm of AgNPs concentrations with all sizes. In addition, both septation number and dimensions of micro- and macroconidia were found to be gradually decreased with the application of silver nanoparticles. This work showed that the low concentration of AgNPs could be used as potential antifungal agents and applied for control of phytopathogens.

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