Abstract
The phytosynthesis of nanoparticles is a green chemistry approach that combines nanotechnology and bioactive compounds of plants. The aim of this study was to evaluate the effect of silver nanoparticles (AgNPs) from Prosopis glandulosa and Pluchea sericea, respectively, on the control of Fusarium solani previously inoculated in the rhizosphere of transgenic insect-resistant cotton plants. The results showed that the weekly application of AgNPs from P. glandulosa and P. sericea caused a diminution of fungal propagules in the soil after 30 days of treatment. In this sense, the AgNPs from P. glandulosa were more efficient in the reduction of infection points in the roots of the plants infected with F. solani compared with AgNPs from P. sericea. Additionally, the application of AgNPs from both plants showed a significant increase of optimum quantum yield (Fv/Fm), stomata conductance (gs), and the number of lateral roots in transgenic insect-resistant cotton plants after 30 days of exposure when compared to the control. Based on our results, AgNPs from P. glandulosa and P. sericea could inhibit growth of Fusarium solani. However, more extensive and elaborate studies are needed to explain the different mechanisms that participate in the inhibition of growth of fungus using nanoparticles from these plants.
Highlights
Cotton (Gossypium hirsutum L.) is the most economically important crop in the global textile industry and constitutes more than half of all textile fiber consumption worldwide (Karademir et∼al. 2011)
The AgNPs may be used with relative safety for control of fungal diseases in plants compared to synthetic fungicides, as the applications of AgNPs against Fusarium species associated with transgenic insect-resistant cotton has not been reported
Data showed that addition of AgNPs from P. glandulosa and P. sericea had different effects on the amount of Fusarium propagules in the soil of the different treatments (Fig. 1a)
Summary
Cotton (Gossypium hirsutum L.) is the most economically important crop in the global textile industry and constitutes more than half of all textile fiber consumption worldwide (Karademir et∼al. 2011). Mexico has adopted this new technology, and 9 years after commercial release, Bt. Diverse studies reported the use of different control measures for Fusarium species associated with plants. Diverse studies reported the use of different control measures for Fusarium species associated with plants These measures include the application of agronomic control techniques, genetic resistance, and use of Abdelmoteleb et al Egyptian Journal of Biological Pest Control (2018) 28:4 chemical or biological antagonists Researchers are searching for alternative measures that together with biological control and optimal use of fungicides provide major control of fungal diseases in plants In this sense, the AgNPs may be used with relative safety for control of fungal diseases in plants compared to synthetic fungicides, as the applications of AgNPs against Fusarium species associated with transgenic insect-resistant cotton has not been reported. The main objective of the present study was to evaluate the inhibition of fungal growth of F. solani in transgenic insect-resistant cotton treated with silver phytonanoparticles from Prosopis juliflora and Pluchea sericea
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