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Characterization and biotoxicity of Hypnea musciformis-synthesized silver nanoparticles as potential eco-friendly control tool against Aedes aegypti and Plutella xylostella

文献类型： 外文期刊

作者： Roni, Mathath 1 ; Murugan, Kadarkarai 1 ; Panneerselvam, Chellasamy 1 ; Subramaniam, Jayapal 1 ; Nicoletti, Marc 1 ;

作者机构： 1.Bharathiar Univ, Sch Life Sci, Dept Zool, Div Entomol, Coimbatore 641046, Tamil Nadu, India

2.Univ Roma La Sapienza, Dept Environm Biol, I-00185 Rome, Italy

3.Benha Univ, Fac Vet Med, Dept Parasitol, Moshtohor 13736, Egypt

4.Fujian Acad Agr Sci, Inst Plant Protect, Fuzhou 350013, Fujian, Peoples R China

5.Univ Pisa, Dept Agr Food & Environm, I-56124 Pisa, Italy

6.King Saud Univ, Coll Sci, Dept Bot & Microbiol,

关键词： Bio-fabrication;Green-synthesis;Nanobiotechnology;Pest control;Seaweed

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.291； 五年影响因子：6.393 ）

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收录情况： SCI

摘要： Two of the most important challenges facing humanity in the 21st century comprise food production and disease control. Eco-friendly control tools against mosquito vectors and agricultural pests are urgently needed. Insecticidal products of marine origin have a huge potential to control these pests. In this research, we reported a single-step method to synthesize silver nanoparticles (AgNP) using the aqueous leaf extract of the seaweed Hypnea musciformis, a cheap, nontoxic and eco-friendly material, that worked as reducing and stabilizing agent during the biosynthesis. The formation of AgNP was confirmed by surface plasmon resonance band illustrated in UV-vis spectrophotometer. AgNP were characterized by FTIR, SEM, EDX and XRD analyses. AgNP were mostly spherical in shape, crystalline in nature, with face-centered cubic geometry, and their mean size was 40-65 nm. Low doses of H. musciformis aqueous extract and seaweed-synthesized AgNP showed larvicidal and pupicidal toxicity against the dengue vector Aedes aegypti and the cabbage pest Plutella xylostella. The LC50 value of AgNP ranged from 18.14 to 38.23 ppm for 1st instar larvae (L1) and pupae of A. aegypti, and from 24.5 to 38.23 ppm for L1 and pupae of P. xylostella. Both H. musciformis extract and AgNP strongly reduced longevity and fecundity of A. aegypti and P. xylostella adults. This study adds knowledge on the toxicity of seaweed borne insecticides and green-synthesized AgNP against arthropods of medical and agricultural importance, allowing us to propose the tested products as effective candidates to develop newer and cheap pest control tools. (C) 2015 Elsevier Inc. All rights reserved.

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