Biosynthesis of Green Silica Nanoparticles and Its Effect on Cotton Aphid, Aphis gossypii Glover and Mealybug, Phenacoccus solenopsis Tinsley

Pavitra, G.; Sushila, N.; Sreenivas, A.G.; Ashok, J.; Sharanagouda, H.

doi:10.20546/ijcmas.2018.710.162

Cited by 8 publications

(4 citation statements)

References 8 publications

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“…Other possible mechanisms of SiO2NP-induced insect mortality include the blockage of spiracles and tracheae (part of the respiratory system) or damage to the surface wax on the outer cuticle of the insect by sorption (physisorption) and abrasion (Rastogi et al 2019). In this study, however, SiO2NPs did not contact the outer cuticle of the insect L. trifolii since the nanoparticle solution was applied to the plant prior to infestation by L. mechanical resistance to herbivory and causing abnormal level of wear on mandibles of the insects that feed on it (Painter 1951;Sasamoto 1955;Takahashi 1995;Keeping and Meyer 2002;Reynolds et al 2009;Massey and Hartley 2009). Silica may also cause impairment of the digestive tract in insect herbivores (Smith 1969).…”

Section: Discussionmentioning

confidence: 82%

“…The available literature on the entomotoxic effects of SiO2NPs focuses on insect pests of stored grains, such as Sitophilus oryzae (Goswami et al 2010;Debnath et al 2011), Callosobruchus maculatus (Rouhani et al 2012;Arumugam et al 2016), and Corcyra cephalonica (Vani and Brindhaa 2013). More recently, entomotoxic effects have also been tested on insect pests in field settings, including the lepidopterans Spodoptera littoralis (El-Samahy et al 2015;Ayoub et al 2017), Spodoptera litura, Achaea janata (Rani et al 2014), Mythimna separata (Mousa et al 2014) and Plutella xylostella (Shoaib et al 2018;Bilal et al 2020), as well as the aphids Lipaphis pseudobrassicae (Debnath et al 2010), Aphis gossypii (Pavitra et al 2018, and the mealybug Phenacoccus solenopsis (Pavitra et al 2018). These insects are external feeders and internal leaf feeders such as leafminers have not been well studied of SiO2NP effects.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Silica nanoparticles control a generalist pest, American serpentine leaf miner <em>Liriomyza trifolii</em>

Thabet¹,

Galal²,

Tuda³

et al. 2020

Preprint

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Insects quickly develop their resistance to conventional synthetic chemical insecticides. Silica nanoparticles (SiO2NPs) is a new promising approach not only in decreasing insect pest numbers but also for its safety regarding agricultural organisms such as plants and beneficial natural enemies. Here, we investigate the safety of SiO2NPs on the faba bean Vicia faba (Fabaceae) as a model plant for toxicity studies and its control efficiency against the American serpentine leafminer Liriomyza trifolii (Diptera: Agromyzidae) as a major devastating insect pest against a wide range of crops. The concentrations of 50, 100, 200 and 400 mg/L of SiO2NPs (spherical shape, 15.3 nm) as well as distilled water as the control were used to investigate the effect of the nanoparticles. Early stages of development of V. faba were evaluated. The same concentrations of SiO2NPs were applied by spraying on two weeks old bean seedlings to evaluate their toxic effect on the feeding, survival and body mass of L. trifolii. A qRT-PCR analysis was conducted to assess oxidative stress on the gene expression level of the major antioxidative enzymes, catalase and superoxide dismutase, in L. trifolii. SiO2NPs inhibited root development only at a high concentration and did not affect the germination percentage, germination time, shoot length and vigor index compared to the control. The survival rate of larvae was lower than the control at the highest concentration and the larval feeding velocity and pupal weight decreased at high concentrations. Gene expression of both enzymes at the pupal stage were not affected by SiO2NPs at any concentrations. This study suggests that care must be taken to utilize SiO2NPs at a suitable concentration in controlling pests, avoiding negative effects on plant growth.

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Section: Discussionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Silica nanoparticles control a generalist pest, American serpentine leaf miner <em>Liriomyza trifolii</em>

Thabet¹,

Galal²,

Tuda³

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…The insecticidal activity of silica nanoparticles against aphids has been previously mentioned by Abd El-Wahab et al (2016) who showed that hydrophilic nanosilica at 500 mg kg -1 was effective for the control of aphid species Myzus persicae, Acyrthosiphon pisum and Aphis craccivora. Pavitra et al (2018) also recorded that green silica nanoparticle at 2000 mg L -1 caused mortality on A. gossypii after five days from treatment. Nanoparticles toxicity has been demonstrated against many insects such as Sitophilus oryzae (Debnath et al, 2011), mosquitoes, including Anopheles stephensi Liston, Aedes aegypti Linnaeus and Culex quinquefasciatus Say (Barik et al, 2012), cotton leafworm, Spodoptera littoralis (El-bendary and El-Helaly, 2013) and the cowpea seed beetle, Callosobruchus maculatus (F.) (Rouhani et al, 2013 andArumugam et al, 2016).…”

Section: Discussionmentioning

confidence: 91%

Toxicity and Biochemical Effects of Spirotetramat and its Binary Mixtures with Nanosilica against Aphis gossypii Glover, Bemisia tabaci Gennadius and the Earthworm, Eisenia fetida

Hussein

Tawfeek²,

Eldesouky

2022

Alexandria Science Exchange Journal

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Nanotechnology will make agriculture eco-friendly and profitable by reducing the concentration of insecticides used, which is appreciable from the environmental safety perspective. Toxicity of spirotetramat alone and its mixtures with nanosilica against nymphs of Aphis gossypii (Hemiptera: Aphididae) and adults of Bemisia tabaci (Hemiptera: Aleyrodidae) was evaluated through laboratory and field experiments during two years (2020 and 2021). The possible impact of treatments on Eisenia fetida (Oligochaeta: Lumbricidae) was also assessed. The enzymatic activity of carboxylesterase (CarE) and glutathione S-transferase (GST) in tested insects and earthworm was estimated. Toxicity of spirotetramat was increased when mixed with nanosilica at 250, 500, 1000 mg L -1 , ratios were 1.13, 1.91 & 2.59 -fold on A. gossypii, 1.12, 1.41 & 2.26 -fold on B. tabaci and 1.05, 1.17 & 1.46 -fold on E. fetida, respectively. Spirotetramat and nanosilica at 1000 mg L -1 mixture gave the highest significantly increased in CarE activity of A. gossypii and B. tabaci (11.42 and 9.33 μmol min -1 mg protein -1 ), and decreased the GST activity (1.54 and 1.69 μmol min -1 mg protein -1 ), respectively, relative to the control. While, the same previous mixture on E. fetida increased the enzyme activity of CarE and GST (13.37 and 3.36 μmol min -1 mg protein -1 ), respectively, compared to the control. Additionally, the mixture of spirotetramat and nanosilica at 1000 mg L -1 recorded the highest population reduction percentages in A. gossypii (92.5 and 95.5 %) and B. tabaci (79.9 and 84.4 %) compared with spirotetramat alone (88.6 and 90.7%) for A. gossypii, (73.6 and 78.9%) for B. tabaci during 2020 and 2021 cotton seasons, respectively.

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“…Eugenia et al (2019) evaluated the effectiveness of two plant based copper nanoparticles against cotton mealybug Phenacoccus solenopsis and proved that green synthesized CuNPs had a significant toxic effect after 96 hours. A similar study was conducted by Pavitra et al (2018) in which the toxicity of rice based silica nanoparticles against cotton mealybug was tested. The results showed that rice based green silica NPs were effective in managing P. solenopsis populations.…”

Section: Discussionmentioning

confidence: 99%

Toxicity of green silver nanoparticles of plant extracts against citrus mealybug Planococcus citri

et al. 2020

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Planococcus citri is an economically important polyphagous insect pest and is a serious threat to horticultural crops especially mango and citrus. It is mainly controlled by synthetic insecticides which have deleterious effects on humans, livestock and environment. To dispense with the detrimental consequences of insecticides, plant extracts and their silver nanoparticles can be potential alternatives. The present study reports the effectiveness of four plant extracts and their silver based nanoparticles against P. citri. All the plant extracts and their silver nanoparticles caused mortalities of 2nd and 3rd instars of P. citri at all concentrations and exposure durations. The ginger extracts and their silver nanoparticles caused maximum mortality of 2nd and 3rd instars of P. citri (94 and 90% respectively) at the highest concentration after 72 hours followed by neem extracts and their silver nanoparticles. Similarly, the mortalities caused by garlic silver nanoparticles followed the similar pattern. Eucalyptus plant extracts and their silver nanoparticles were found to be the lease effective. It was also observed that with an increase in concentration and exposure period, the mortality also increased showing a direct relationship. Ginger plant extract and their silver nanoparticles gave the best results and lowest LC50 values by a large margin. Neem extracts ranked second followed by garlic and eucalyptus and gave significantly poor results as compared to the first two plants. The required concentration for killing 50% of the nymphal population was observed to decrease with the passage of time.

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Biosynthesis of Green Silica Nanoparticles and Its Effect on Cotton Aphid, Aphis gossypii Glover and Mealybug, Phenacoccus solenopsis Tinsley

Cited by 8 publications

References 8 publications

Silica nanoparticles control a generalist pest, American serpentine leaf miner <em>Liriomyza trifolii</em>

Silica nanoparticles control a generalist pest, American serpentine leaf miner <em>Liriomyza trifolii</em>

Toxicity and Biochemical Effects of Spirotetramat and its Binary Mixtures with Nanosilica against Aphis gossypii Glover, Bemisia tabaci Gennadius and the Earthworm, Eisenia fetida

Toxicity of green silver nanoparticles of plant extracts against citrus mealybug Planococcus citri

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