Nanotechnology for Plant Disease Management

Worrall, Elizabeth A.; Hamid, Aflaq; Mody, Karishma T.; Mitter, Neena; Pappu, H. R.

doi:10.3390/agronomy8120285

Cited by 297 publications

(145 citation statements)

References 124 publications

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“…Nanotechnology has immense potential in agriculture for crop protection, controlled release of agrochemicals, transfer of target genes, plant hormone delivery and early detection of plant disease using nanosensors [5]. The use of nanoparticles as safe and effective management method for control of phytopathogens is being explored [6]. Most common nanoparticles that have entered into the arena of plant disease management are nanoforms of silver [7], copper [8], chitosan [9], titanium dioxide [10], magnesium and zinc [11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of silver nanoparticles using extract of Ocimum kilimandscharicum and its antimicrobial activity against plant pathogens

et al. 2019

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Biological synthesis of silver nanoparticles using plants is gaining importance as an economically viable and ecofriendly approach. The present study reports synthesis of silver nanoparticles using an important Himalayan medicinal herbal plant Ocimum kilimandscharicum and the potential of biosynthesized silver nanoparticles for control of plant pathogens. The reducing effect of the aqueous plant extract for synthesis of silver nanoparticles was investigated at different concentrations and temperatures. UV-visible absorption spectrum recorded for samples prepared with different concentrations (20, 30, 40 and 50% v/v) of plant extract and treated at different temperatures (40, 60, 80 °C and room temperature) confirmed the formation of silver nanoparticles. Antimicrobial activity of the silver nanoparticles was tested against Fusarium oxysporum, Colletotrichum gloeosporioides, Bacillus sp. and Enterobacter cloacae. Complete inhibition of F. oxysporum was observed at 75 ppm concentration of silver nanoparticles as compared to 67.75 ± 1.15 mm radial growth without silver nanoparticles after 7 days of incubation. No growth of C. gloeosporioides was observed in vitro at 100 ppm silver nanoparticles as compared to 44.50 ± 1.14 mm radial growth in the absence of the silver nanoparticles. Inhibitory effect of biosynthesized silver nanoparticles was also observed against bacterial pathogens. The highest inhibition zone of 14.5 ± 1.11 mm was observed against E. cloacae with 100 ppm silver nanoparticles. The obtained results confirm strong antimicrobial activity of the silver nanoparticles synthesized using O. kilimandscharicum against plant pathogens.

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Section: Introductionmentioning

confidence: 99%

Synthesis of silver nanoparticles using extract of Ocimum kilimandscharicum and its antimicrobial activity against plant pathogens

et al. 2019

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“…In crop science, nanoparticles are generally used as fertilizers, growth stimulators, photosynthesis enhancers, and in the management of pests and diseases [59]. Nanoparticles provide tremendous benefits in agriculture, such as increasing the quality and quantity of crop yields, increasing shelf life, enhanced site-specific distribution, and the absorption of nutrients and active ingredients.…”

Section: Nanotechnology Advancements In Agriculturementioning

confidence: 99%

“…Metal nanoparticles, including silver, copper, platinum, gold, sulfur, etc. and chitosan have been intensively studied in vivo and in vitro as bacterial, fungal, and disease inhibitors due to their antiviral, antibacterial, and antifungal properties [59,61]. Silver nanoparticles have been proven to inhibit the growth of a wide range of fungi and bacteria, i.e., Bipolaris sorokiniana [62], Magnaporthe grisea [62], Alternaria alternata [63], Botrytis cinerea [63], etc.…”

Section: Nanotechnology Advancements In Agriculturementioning

confidence: 99%

“…They improve the solubility and stability, reduce volatilization, enhance absorption and site-specific delivery, as well as providing gradual and sustained release. In contrast, the focus of the herbicide nanocarrier systems is to reduce their toxicity level, thus minimizing their negative impacts on the environment [59].…”

Section: Nanotechnology Advancements In Agriculturementioning

confidence: 99%

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An Overview of the Oil Palm Industry: Challenges and Some Emerging Opportunities for Nanotechnology Development

2020

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The increase in the world’s oil demand due to the rise of the global population urges more research into the production of sustainable vegetable oilseeds, among which palm oil is the most suitable candidate as it is the most efficient oilseed crop in the world. In an effort to drive the oil palm industry in the areas of food safety and security nanotechnology could offer a sustainable alternative. However, the utilization of nanotechnology in the oil palm industry is still limited. In this review, we aim to encourage the researchers to fully utilize nanotechnology as an alternative solution to tackle the challenges faced by the oil palm industry. Moreover, we also aim to highlight the opportunities for nanotechnology development in oil palm-based related research. The major points are as follows: (1) Nanosensing enables real-time monitoring of plantation status and crop progression, including soil, water and nutrient management, early pest/disease detection, and the spreading of pests/diseases. The use of nanosensing conveniently extends into advanced breeding topics, such as the development of disease-tolerant plants; (2) Nanotechnology could be the answer for the development of integrated management of pest and disease. Active agricultural ingredients can be entrapped or encapsulated into nanocarrier systems to improve their solubility, stability, enhance their efficient delivery to site-specific targets, with longer shelf life, and consequently improved efficacy; (3) Valuable nanomaterials can be isolated and generated from oil palm biomass waste. The utilization of oil palm biomass waste could overcome the issue of the massive production of waste in the oil palm industry and palm oil mills, where oil only accounts for 10% of the biomass, while 90% is comprised of the generated biowastes. (4) Palm oil can be utilized as a green alternative as a capping and stabilizing agent in the biosynthesis of metallic and non-metallic nanoparticles. In addition, nanoemulsion formulations using palm oil in drug delivery systems offer advantages such as low toxicity, enhance bioavailability and solubility of the drugs, apart from being inexpensive and environmentally friendly.

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“…However, plants sprayed with dsRNA loaded onto nanoparticles (e.g., BioClay) have shown a greater degree of protection against pathogenic infections for 30 days after application, both on treated and newly emerged leaves [58]. Nanoparticles have also been reported to improve the uptake of the dsRNA by root tips and the silencing of the target genes [59]. To enhance the efficacy and stability of SIGS-based RNA biofungicides, the sustained release of RNA fungicides using nanoparticles as a carrier or stabilizer would be beneficial.…”

Section: Rnai-based Biofungicides and Spray-induced Gene Silencing (Smentioning

confidence: 99%

RNAi-Based Biofungicides as a Promising Next-Generation Strategy for Controlling Devastating Gray Mold Diseases

Islam

Sherif

2020

IJMS

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Botrytis cinerea is one of the most critical agro-economic phytopathogens and has been reported to cause gray mold disease in more than 1000 plant species. Meanwhile, small interfering RNA (siRNA), which induce RNA interference (RNAi), are involved in both host immunity and pathogen virulence. B. cinerea has been reported to use both siRNA effectors and host RNAi machinery to facilitate the progression of gray mold in host species. Accordingly, RNAi-based biofungicides that use double-stranded RNA (dsRNA) to target essential fungal genes are considered an emerging approach for controlling devastating gray mold diseases. Furthermore, spray-induced gene silencing (SIGS), in which the foliar application of dsRNA is used to silence the pathogen virulence genes, holds great potential as an alternative to host-induced gene silencing (HIGS). Recently, SIGS approaches have attracted research interest, owing to their ability to mitigate both pre-and post-harvest B. cinerea infections. The RNAi-mediated regulation of host immunity and susceptibility in B. cinerea-host interactions are summarized in this review, along with the limitations of the current knowledge of RNAi-based biofungicides, especially regarding SIGS approaches for controlling gray mold diseases under field conditions.

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Nanotechnology for Plant Disease Management

Cited by 297 publications

References 124 publications

Synthesis of silver nanoparticles using extract of Ocimum kilimandscharicum and its antimicrobial activity against plant pathogens

Synthesis of silver nanoparticles using extract of Ocimum kilimandscharicum and its antimicrobial activity against plant pathogens

An Overview of the Oil Palm Industry: Challenges and Some Emerging Opportunities for Nanotechnology Development

RNAi-Based Biofungicides as a Promising Next-Generation Strategy for Controlling Devastating Gray Mold Diseases

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