Biogenic silver nanoparticles mediated stress on developmental period and gut physiology of major lepidopteran pest Spodoptera litura (Fab.) (Lepidoptera: Noctuidae)—An eco-friendly approach of insect pest control

Bharani, R. S. Arvind; Namasivayam, S. Karthick Raja

doi:10.1016/j.jece.2016.12.023

Cited by 71 publications

(21 citation statements)

References 38 publications

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“…The supernatant was collected and stored for further use. 67 Synthesis of Chemogenic and Biogenic Nano-sulfur. Chemogenic nano-sulfur (SNP-C) was synthesized by the surfactant assisted acid catalyzed precipitation method.…”

Section: Methodsmentioning

confidence: 99%

Cytotoxic and Apoptotic Effects of Chemogenic and Biogenic Nano-sulfur on Human Carcinoma Cells: A Comparative Study

Krishnappa

Chandraprabha

et al. 2021

ACS Omega

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Two-dimensional nanostructures have gained tremendous interest in the field of biomedical applications and cancer activity in particular. Although sulfur is known for its wide range of biological activities, its potentiality in two-dimensional forms as an antitumor agent is hitherto unexplored. To address the current deficient knowledge on nano-sulfur as an antitumor agent, we report the synthesis of nano-sulfur sheets/particles and their cytotoxic, apoptotic activity against human carcinoma cell lines. In vitro cytotoxic effects of biogenic nanosheets (SNP-B) and chemogenic nanoparticles (SNP-C) were assessed against human lung carcinoma (A549), human epidermoid carcinoma (A431), human promyelocytic leukaemia (HL60) and human lung fibroblast (IMR90) cell lines. Cell cycle analysis, apoptotic study, and caspase-3 expression studies were carried out to understand the mechanism of cytotoxic activity of nano-sulfur. The MTT assay indicated a dose-dependent decrease in viability of all the cell lines treated with nano-sulfur, with SNP-B being more toxic compared to SNP-C. The apoptotic study and cell cycle analysis indicated cell cycle arrest followed by apoptosis-induced cell death. The caspase-3 expression study indicated that nano-sulfur induces apoptosis by the activation of caspase through the mitochondrial pathway. Apart from this, a lower cytotoxicity was observed in IMR90 cell lines treated with SNP-B , indicating a higher specificity of synthesized nanosheets towards cancer cells. Taken all together, this work highlights the potentiality of sulfur nanosheets in inducing cytotoxicity and apoptotic activity, and the impact of morphology as a critical determinant on the cytotoxic response on various cell lines.

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Section: Methodsmentioning

confidence: 99%

Cytotoxic and Apoptotic Effects of Chemogenic and Biogenic Nano-sulfur on Human Carcinoma Cells: A Comparative Study

Krishnappa

Chandraprabha

et al. 2021

ACS Omega

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“…Nanosilver, for example, has biotoxic properties. Bharani and Namasivayam synthesized nanosilver with good control effect against Spodoptera litura [ 51 ]. According to the research of Meng et al, the results of in vitro studies showed that silver nanoparticles enter cells through phagocytosis [ 52 , 53 ] or by passive diffusion [ 54 ].…”

Section: Nanomaterials For Pesticide and Fertilizer Applicationsmentioning

confidence: 99%

Nanomaterials and nanotechnology for the delivery of agrochemicals: strategies towards sustainable agriculture

Sun

et al. 2022

J Nanobiotechnol

233

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Nanomaterials (NMs) have received considerable attention in the field of agrochemicals due to their special properties, such as small particle size, surface structure, solubility and chemical composition. The application of NMs and nanotechnology in agrochemicals dramatically overcomes the defects of conventional agrochemicals, including low bioavailability, easy photolysis, and organic solvent pollution, etc. In this review, we describe advances in the application of NMs in chemical pesticides and fertilizers, which are the two earliest and most researched areas of NMs in agrochemicals. Besides, this article concerns with the new applications of NMs in other agrochemicals, such as bio-pesticides, nucleic acid pesticides, plant growth regulators (PGRs), and pheromone. We also discuss challenges and the industrialization trend of NMs in the field of agrochemicals. Constructing nano-agrochemical delivery system via NMs and nanotechnology facilitates the improvement of the stability and dispersion of active ingredients, promotes the precise delivery of agrochemicals, reduces residual pollution and decreases labor cost in different application scenarios, which is potential to maintain the sustainability of agricultural systems and improve food security by increasing the efficacy of agricultural inputs. Graphical Abstract

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“…Furthermore, significant histological variations in the midgut of AgNPs-treated H. armigera and S. litura were observed, reflecting the destruction of the basement membrane (BM), brush border (Bb), and epithelial cells (EP) ( Figure 6 D(ii,iv)). These results were compatible with that reported by Bharani et al ., who showed that the AgNPs from pomegranate peel extracts altered the gut physiology of S. litura , 176 the gut enzymes activities of S. litura , including amylase, protease, lipase, and invertase reduced significantly in a dose-dependent manner, and the gut microflora and dry weight of S. litura reduced dramatically after AgNPs treatment. The gut microbial disruption results in a severe impact on insect physiology, providing an effective pest management route.…”

Section: Bioinspired Nps For Crop Disease Managementsmentioning

confidence: 99%

Bioinspired Nanomodification Strategies: Moving from Chemical-Based Agrosystems to Sustainable Agriculture

2021

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Agrochemicals have supported the development of the agricultural economy and national population over the past century. However, excessive applications of agrochemicals pose threats to the environment and human health. In the last decades, nanoparticles (NPs) have been a hot topic in many fields, especially in agriculture, because of their physicochemical properties. Nevertheless, the prevalent methods for fabricating NPs are uneconomical and involve toxic reagents, hindering their extensive applications in the agricultural sector. In contrast, inspired by biological exemplifications from microbes and plants, their extract and biomass can act as a reducing and capping agent to form NPs without any toxic reagents. NPs synthesized through these bioinspired routes are cost-effective, ecofriendly, and high performing. With the development of nanotechnology, biosynthetic NPs (bioNPs) have been proven to be a substitute strategy for agrochemicals and traditional NPs in heavy-metal remediation of soil, promotion of plant growth, and management of plant disease with less toxicity and higher performance. Therefore, bioinspired synthesis of NPs will be an inevitable trend for sustainable development in agricultural fields. This critical review will demonstrate the bioinspired synthesis of NPs and discuss the influence of bioNPs on agricultural soil, crop growth, and crop diseases compared to chemical NPs or agrochemicals.

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Biogenic silver nanoparticles mediated stress on developmental period and gut physiology of major lepidopteran pest Spodoptera litura (Fab.) (Lepidoptera: Noctuidae)—An eco-friendly approach of insect pest control

Cited by 71 publications

References 38 publications

Cytotoxic and Apoptotic Effects of Chemogenic and Biogenic Nano-sulfur on Human Carcinoma Cells: A Comparative Study

Cytotoxic and Apoptotic Effects of Chemogenic and Biogenic Nano-sulfur on Human Carcinoma Cells: A Comparative Study

Nanomaterials and nanotechnology for the delivery of agrochemicals: strategies towards sustainable agriculture

Bioinspired Nanomodification Strategies: Moving from Chemical-Based Agrosystems to Sustainable Agriculture

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