A New Composition of Nanosized Silica-Silver for Control of Various Plant Diseases

Park, Hae Jun; Kim, Sung Hoon; Kim, Hwa Jung; Choi, Seong Ho

doi:10.5423/ppj.2006.22.3.295

Cited by 384 publications

(122 citation statements)

References 13 publications

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“…Morones et al [40] observed that silver nanoparticles disrupt transport systems including ion efflux and caused rapid accumulation of silver ions, in addition to interrupting cellular processes such as respiration and metabolism due to reacting with molecules. Moreover, using effective concentrations of ChNPs and AgNPs were effective against the tested fungal pathogens relative to control and were agreed with findings of some investigators who studied a successful antagonism of various fungal pathogens by silver nanoparticles at different concentrations [41][42][43]. Darsef and Suhartono [44] suggested that the mechanism, which chitosan affects the growth of fungi, may be due to its ability to interfere with the negatively charged residues of macromolecules exposed on fungal surfaces forming polyelectrolytic complexes, and affecting membrane permeability as well as causing leakage of intracellular electrolytes and proteinaceous constituents.…”

Section: Disease Assessmentsupporting

confidence: 90%

Chitosan and Silver Nanoparticles as Control Agents of Some Faba Bean Spot Diseases

Ahmed¹

2017

J Plant Pathol Microbiol

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Faba bean (Vicia fabae L.) is one of the most economic legume crops in Egypt. The antifungal effects of different concentrations of Chitosan and silver nanoparticles (20 ppm, 40 ppm, 60 ppm, 80 ppm and 100 ppm) were studied against aggressive isolates of Botrytis fabae and Alternaria alternata causing chocolate spot disease and Alternaria leaf spot disease respectively. Under laboratory conditions, the application of five concentrations of Chitosan nanoparticles and silver nanoparticles to the cultures of B. fabae and A. alternata showed significant inhibition of mycelial growth. Number of spores/ml decreased with increasing of nanoparticle concentration. Mycelial weight of fungal pathogens also decreased. The lesion growth was suppressed by increasing in the concentration of nanoparticles with significantly different relative to control using detached leaf test. Under greenhouse conditions, chitosan and silver nanoparticles were sprayed in concentrations 60 ppm, 80 ppm, and 100 ppm on faba bean plants. The tested nanoparticles showed significant effect against B. fabae and A. alternata relative to control. The obtained results indicated that the highest reduction of chocolate spot severity was obtained with treatment by 100 ppm of silver nanoparticles (52.94%) followed by chitosan nanoparticles 80 ppm (50.59%). While the application of 100 ppm of chitosan nanoparticles was highly efficient against Alternaria leaf spot where the reduction in disease severity (67.13%) followed by 100 ppm silver nanoparticles which caused reduction rate (61.5%). The obtained results indicated the possibility of using chitosan and silver nanoparticles as a substance in the manufacturing of fungicides to minimize the impact of chocolate spot and Alternaria leaf spot diseases in faba bean. However, further experimental trials under field conditions and safety evaluation studies are needed before the nanoparticles types and concentrations can be used as potential antifungal agents.

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Section: Disease Assessmentsupporting

confidence: 90%

Chitosan and Silver Nanoparticles as Control Agents of Some Faba Bean Spot Diseases

Ahmed¹

2017

J Plant Pathol Microbiol

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“…The synthesis of silver nanoparticles has attracted considerable interest due to their novel physicochemical properties and their potential applications in many fields such as medicine [1] (http://lifesilver.com/safety.html), textiles [2,3], sensors and detectors [4], catalysis [5], nanocomposites [6,7] as well as agriculture [8]. The antibacterial activity of silver-containing materials such as polyurethane foam can be used for water treatment [9].…”

Section: Introductionmentioning

confidence: 99%

Preparation of colloidal silver nanoparticles in poly(N-vinylpyrrolidone) by γ-irradiation

Du¹,

Phú

Duy

et al. 2008

Journal of Experimental Nanoscience

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Colloidal silver nanoparticles were prepared by -irradiating Ag þ in aqueous solution in the presence of 2% polyvinyl pyrrolidone (PVP) as stabilising agent and ethyl alcohol as free radical (OH . ) scavenger. The saturated conversion dose of Ag þ into Ag was determined by UV-Vis spectroscopy and the silver nanoparticles size was characterised by transmission electron microscopy. The influence of Ag þ concentration (1-50 mM) on the saturated conversion dose and average diameter of silver nanoparticles was investigated. Results showed that the saturated conversion dose was from 8 to 48 kGy and the silver particles size was in the range of 6-21 nm for Ag þ concentration from 1 to 50 mM. The effect of PVP molecular weight on silver particles size was studied as well.

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“…Any phytotoxic phenomena were not detected in the solution applied to plants. The results were the same as when applied to other plants (Park et al 2006).…”

Section: Control Efficiency Of Nano Sio 2 On Fungi and Fungal Diseasesmentioning

confidence: 61%

“…In addition, the antifungal and antibacterial effects of nanosized silica-silver and antifungal effect on powdery mildew and chemical injuries from nanosized silica-silver at high concentrations on plants were tested. The control effects of the nanosized silica-silver on pathogenic fungi of plants infected with powdery mildew were carried out in field and green house (Park et al 2006). The results showed that the nanosized silica-silver antifungal activity was against the tested phytopathogenic fungi at 3.0 ppm with varied degrees.…”

Section: Control Efficiency Of Nano Sio 2 On Fungi and Fungal Diseasesmentioning

confidence: 99%

Nanotechnology in agriculture, livestock, and aquaculture in China. A review

Huang

Wang

Liu

et al. 2014

Agron. Sustain. Dev.

232

120

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Nanoscience emerged in the late 1980s and is developed and applied in China since the middle of the 1990s. Although nanotechnologies have been less developed in agronomy than other disciplines, due to less investment, nanotechnologies have the potential to improve agricultural production. Here, we review more than 200 reports involving nanoscience in agriculture, livestock, and aquaculture. The major points are as follows: (1) nanotechnologies used for seeds and water improved plant germination, growth, yield, and quality. (2) Nanotechnologies could increase the storage period for vegetables and fruits. (3) For livestock and poultry breeding, nanotechnologies improved animals immunity, oxidation resistance, and production and decreased antibiotic use and manure odor. For instance, the average daily gain of pig increased by 9.9-15.3 %, the ratio of feedstuff to weight decreased by 7.5-10.3 %, and the diarrhea rate decreased by 55.6-66.7 %. (4) Nanotechnologies for water disinfection in fishpond increased water quality and increased yields and survivals of fish and prawn. (5) Nanotechnologies for pesticides increased pesticide performance threefold and reduced cost by 50 %. (6) Nano urea increased the agronomic efficiency of nitrogen fertilization by 44.5 % and the grain yield by 10.2 %, versus normal urea. (7) Nanotechnologies are widely used for rapid detection and diagnosis, notably for clinical examination, food safety testing, and animal epidemic surveillance. (8) Nanotechnologies may also have adverse effects that are so far not well known.

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A New Composition of Nanosized Silica-Silver for Control of Various Plant Diseases

Cited by 384 publications

References 13 publications

Chitosan and Silver Nanoparticles as Control Agents of Some Faba Bean Spot Diseases

Chitosan and Silver Nanoparticles as Control Agents of Some Faba Bean Spot Diseases

Preparation of colloidal silver nanoparticles in poly(N-vinylpyrrolidone) by γ-irradiation

Nanotechnology in agriculture, livestock, and aquaculture in China. A review

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