The Impact of Silver Nanoparticles Produced by Bacillus pumilus As Antimicrobial and Nematicide

Mahmoud, Wafaa; Abdelmoneim, Tamer S.; Elazzazy, Ahmed M.

doi:10.3389/fmicb.2016.01746

Cited by 39 publications

(32 citation statements)

References 45 publications

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“…Silver nanoparticles synthesized by Bacillus pumilus possess potent antimicrobial activity against different Gram‐positive and Gram‐negative human pathogenic bacteria, including methicillin‐resistant Staphylococcus aureus , Staphylococcus epidermidis , Streptococcus bovis , E. coli , P. aeruginosa , Shigella sonnei , Klebsiella pneumoniae , and Salmonella typhimurium . [ 306 ] Fungi produce enzymes that act as both reducing and capping agents to produce stable and shape‐controlled AgNPs. [ 307 ]…”

Section: Applicationsmentioning

confidence: 99%

Microbe‐Mediated Extracellular and Intracellular Mineralization: Environmental, Industrial, and Biotechnological Applications

et al. 2020

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Bacteria play an important role in the calcification process of natural minerals and within organisms ( Table 1). It is Microbe-mediated mineralization is ubiquitous in nature, involving bacteria, fungi, viruses, and algae. These mineralization processes comprise calcification, silicification, and iron mineralization. The mechanisms for mineral formation include extracellular and intracellular biomineralization. The mineral precipitating capability of microbes is often harnessed for green synthesis of metal nanoparticles, which are relatively less toxic compared with those synthesized through physical or chemical methods. Microbe-mediated mineralization has important applications ranging from pollutant removal and nonreactive carriers, to other industrial and biomedical applications. Herein, the different types of microbe-mediated biomineralization that occur in nature, their mechanisms, as well as their applications are elucidated to create a backdrop for future research.

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Section: Applicationsmentioning

confidence: 99%

Microbe‐Mediated Extracellular and Intracellular Mineralization: Environmental, Industrial, and Biotechnological Applications

et al. 2020

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“…The variability in the lethal concentrations in these studies may be attributed to procedural differences in preparation of AgNP and test nematodes. The initial studies on the toxicity of AgNP involved free-living species Caenorhabditis elegans (Roh et al, 2009;Meyer et al, 2010) and Panagrellus redivivus (Mahmoud et al, 2016). Oxidative stress-related PMK-1 P38 MAPK activation was reported as a mechanism for toxicity of AgNP to Caenorhabditis elegans (Lim et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Silver nanoparticles as a potential nematicide against Meloidogyne graminicola

Baronia

Kumar

Singh

et al. 2020

Journal of Nematology

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Plant-parasitic nematodes cause severe damage to the various agricultural crops, leading to economic losses for farmers. Therefore, identification and development of novel and environmentally benign nematicides is critically important. In this study, a silver nanoparticle (AgNP) formulation was synthesized, characterized, and investigated as a potential nematicide against rice root-knot nematode, Meloidogyne gramnicola, on rice (Oryza sativa). A series of lab assays (water and sand screening) and glasshouse experiments (using soilless system, autoclaved soil, and naturally infested soil) were conducted to examine the nematicidal effects of AgNP. The results from lab assays revealed 0.1 µg/ml as the minimum concentration for 100% irreversible nematode mortality after 12 hr in the water screening test. However, results from the sand screening test indicated 100% nematicidal effect of AgNP at 2 µg/ml after 24 hr of incubation. In glasshouse assays in soilless system of rice cultivation, 1 µg/ml concentration of AgNP applied directly to the trays achieved significant suppression of root gall formation. The effective dosage to kill nematodes in field soil assays was determined to be 3 µg/ml, which is lower than the value of 150 µg/ml reported in the literature. No visible adverse effect of AgNP was observed on seed germination or plant growth in all the experiments. The results indicate that AgNP has effective nematicidal activity against M. graminicola in rice.

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“…AgNPs have shown potent antimicrobial effects in countering E. coli, S. aureus and S. marcescens [130][131][132] . It also showed antinematode 133 , antiviral 134 , anticancer 135,136 and anti-inflammatory effects 137 . Aqueous P. emblica fruit extract when evaluated against eight pathogenic cultures and its applicability in green synthesis of AgNPs showed that all the test cultures were inhibited by the AgNPs and the average ZOI measured 19.25±2.7 mm 129 .…”

Section: Amla: Antimicrobial Nanoparticlesmentioning

confidence: 99%

Emblica officinalis (Amla) with a Particular Focus on Its Antimicrobial Potentials: A Review

Khurana¹,

Tiwari²,

Sharun³

et al. 2019

J Pure Appl Microbiol

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The Impact of Silver Nanoparticles Produced by Bacillus pumilus As Antimicrobial and Nematicide

Cited by 39 publications

References 45 publications

Microbe‐Mediated Extracellular and Intracellular Mineralization: Environmental, Industrial, and Biotechnological Applications

Microbe‐Mediated Extracellular and Intracellular Mineralization: Environmental, Industrial, and Biotechnological Applications

Silver nanoparticles as a potential nematicide against Meloidogyne graminicola

Emblica officinalis (Amla) with a Particular Focus on Its Antimicrobial Potentials: A Review

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