Nanotechnology in Plant Disease Management: DNA-Directed Silver Nanoparticles on Graphene Oxide as an Antibacterial against <i>Xanthomonas perforans</i>

Öçsoy, İsmail; Paret, Mathews L.; Ocsoy, Muserref Arslan; Kunwar, Sanju; Chen, Tao; Meng, Yuchuan; Tan, Weihong

doi:10.1021/nn4034794

Cited by 490 publications

(256 citation statements)

References 35 publications

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“…13 Our previous study showed also that GO and silver nanowire composites could have improved antibacterial activity with better cell compatibility. 15 In addition, Zhang et al reported that graphene had a positive impact on promoting seed germination and seedling growth of tomatoes.…”

Section: Introductionmentioning

confidence: 93%

“…Especially silverbased antibacterial agents have been widely studied due to their good antibacterial activity. 13,14 In our previous studies, we prepared some silver-based composites with graphene oxide (GO), 15 silicon oxide nanospheres, 16 and porous carbon. 17 These nanocomposites showed excellent antibacterial activity against Escherichia coli and Xanthomonas oryzae pv.…”

Section: Introductionmentioning

confidence: 99%

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Graphene oxide loaded with copper oxide nanoparticles as an antibacterial agent against Pseudomonas syringae pv. tomato

Yang

Cui

2017

RSC Adv.

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Bacterial speck caused by Pseudomonas syringae pv. tomato (Pst) is a major disease of tomatoes. Infection by Pst in the seedling stage could cause 75% of total yield loss and quality losses in tomatoes. Applying massive chemical bactericides to control this disease has caused undesirable pathogen resistance, environmental pollution, and threats to humans. Here, we developed a candidate antibacterial agent made from copper oxide nanoparticles loaded onto the surfaces of graphene oxide sheets (GO-Cu NPs). A series of characterization measurements showed that the nanocomposite had been successfully prepared. Antibacterial activity results indicated that GO-Cu NPs had a 16-times higher antibacterial activity than Kocide 3000. From further investigation, the GO-Cu NPs composite could lead to damaging the cell structure, increasing the level of reactive oxygen species, and decreasing the content of DNA in Pst cells. From an in vivo test, GO-Cu NPs at 4 and 8 mg mL À1 significantly reduced the severity of bacterial speck below 25% and the tomatoes had no phytotoxicity. Comparatively, 125 and 250 mg mL À1 were required for Kocide 3000 to achieve similar effects. Therefore, GO-Cu NPs composites as a high-efficiency biocide have great potential for managing crop diseases.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Graphene oxide loaded with copper oxide nanoparticles as an antibacterial agent against Pseudomonas syringae pv. tomato

Yang

Cui

2017

RSC Adv.

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“…Interestingly, NP-GO NCs exhibit enhanced surface enhanced Raman scattering, catalytic, and antibacterial properties compared to bare GO and NP. [208][209][210][211][212][213] Recent studies reported the fabrication of AgNPs-decorated GO as an effective antibacterial agent. [213][214][215][216] Synthesis of AgNPs decorated on magnetic GO NCs was demonstrated, which showed highly effective inhibitory property and reusability even at the very low concentration (12.5 ppm).…”

Section: Synthesis Of Agnps By Proteins and Dnamentioning

confidence: 99%

Nanosilver: new ageless and versatile biomedical therapeutic scaffold

Khan¹,

Saleh²,

Wahab³

et al. 2018

IJN

162

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Silver nanotechnology has received tremendous attention in recent years, owing to its wide range of applications in various fields and its intrinsic therapeutic properties. In this review, an attempt is made to critically evaluate the chemical, physical, and biological synthesis of silver nanoparticles (AgNPs) as well as their efficacy in the field of theranostics including microbiology and parasitology. Moreover, an outlook is also provided regarding the performance of AgNPs against different biological systems such as bacteria, fungi, viruses, and parasites (leishmanial and malarial parasites) in curing certain fatal human diseases, with a special focus on cancer. The mechanism of action of AgNPs in different biological systems still remains enigmatic. Here, due to limited available literature, we only focused on AgNPs mechanism in biological systems including human (wound healing and apoptosis), bacteria, and viruses which may open new windows for future research to ensure the versatile application of AgNPs in cosmetics, electronics, and medical fields.

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“…Song et al 15 synthesized the silver/polyrhodanine compositedecorated silica nanoparticles, which exhibited excellent antimicrobial activity toward Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) because of the antibacterial effects of both the silver nanoparticles and the polyrhodanine. Tan et al 16 synthesized antibacterial Ag@dsDNA@GO, which can wrap around the Xanthomonas perforans cell and results in rapid cell apoptosis, showing the synergistic antibacterial effect. While these nanostructures can effectively enhance the antibacterial activity of Ag NPs, they oen require complex and tedious preparation methods, and suffering from low yields, poor longterm antibacterial activity, and biocompatibility problems.…”

Section: -14mentioning

confidence: 99%

Shell thickness-dependent antibacterial activity and biocompatibility of gold@silver core–shell nanoparticles

et al. 2017

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Antimicrobial activity of silver is highly effective and broad-spectrum; however, poor long-term antibacterial efficiency and cytotoxicity toward mammalian cells have restricted their applications. Here, we fabricated Au@Ag NPs with tailored shell thickness, and investigated their antibacterial activities against both Gram-negative bacteria (Escherichia coli) and Gram-positive bacteria (Staphylococcus aureus) and the cytotoxicity toward SH-SY5Y human cells, for the first time. Our results demonstrate that Au@Ag NPs with a thickness of 5 nm or Au : Ag ratio 1 : 1 (Au@Ag-2 NPs) have the highest antibacterial activity and excellent biocompatibility. The minimum inhibitory concentration (MIC) values of Au@Ag-2 NPs in terms of effective silver concentration are 5 mg mL À1 for E. coli and 7.5 mg mL À1 for S. aureus, IntroductionTo cope with the overwhelming challenges of infectious diseases resulting from pathogenic bacteria, nano-sized materials, emerging as new types of safe and cost-effective bactericidal materials, have been widely investigated. Among those numerous nanomaterials, silver nanoparticles (Ag NPs) are the most promising antibacterial agents because of their inherent properties of high thermal stability, limited microbial resistance, and broad-spectrum antimicrobial activity against bacteria, viruses and other eukaryotic microorganisms. 1-4 Sondi and co-workers 5 demonstrated that Ag NPs can easily adsorb to the membrane surface of bacteria through electrostatic interaction, form permeable pits, and cause an osmotic collapse in the cells. The other possible mechanism is the release of silver ions (Ag + ) from the oxidized Ag NPs. 6-8 Ag NPs are easy to oxidize and produce a high concentration of Ag + , the released Ag + then destroys the respiratory chain and leads to the formation of reactive oxygen species (ROS), such as hydroxyl radicals, H 2 O 2 and hydroperoxyl radicals, which nally trigger cell damage of the cellular components and leads to the death of the bacteria. 9-11 In spite of this, the easy oxidation of pure Ag NPs and the toxicity in mammalian cells remain challenges in Ag NP applications. 12-14To address this problem, Ag NPs have been decorated with other nanomaterials by the formation of nanostructures. Song et al. 15synthesized the silver/polyrhodanine compositedecorated silica nanoparticles, which exhibited excellent antimicrobial activity toward Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) because of the antibacterial effects of both the silver nanoparticles and the polyrhodanine. Tan et al. 16synthesized antibacterial Ag@dsDNA@GO, which can wrap around the Xanthomonas perforans cell and results in rapid cell apoptosis, showing the synergistic antibacterial effect. While these nanostructures can effectively enhance the antibacterial activity of Ag NPs, they oen require complex and tedious preparation methods, and suffering from low yields, poor longterm antibacterial activity, and biocompatibility problems. 17,18Bimetallic core-shell nanoparticles are graduall...

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Nanotechnology in Plant Disease Management: DNA-Directed Silver Nanoparticles on Graphene Oxide as an Antibacterial against Xanthomonas perforans

Cited by 490 publications

References 35 publications

Graphene oxide loaded with copper oxide nanoparticles as an antibacterial agent against Pseudomonas syringae pv. tomato

Graphene oxide loaded with copper oxide nanoparticles as an antibacterial agent against Pseudomonas syringae pv. tomato

Nanosilver: new ageless and versatile biomedical therapeutic scaffold

Shell thickness-dependent antibacterial activity and biocompatibility of gold@silver core–shell nanoparticles

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