[PMID]: | 28818776 |
[Au] Autor: | Malaikozhundan B; Vaseeharan B; Vijayakumar S; Thangaraj MP |
[Ad] Endereço: | Nanobiosciences and Nanopharmacology Division, Biomaterials and Biotechnology in Animal Health Lab, Department of Animal Health and Management, Alagappa University, Science Campus 6th Floor, Karaikudi 630 004, Tamil Nadu, India. Electronic address: kozhundan.malai@gmail.com. |
[Ti] Título: | Bacillus thuringiensis coated zinc oxide nanoparticle and its biopesticidal effects on the pulse beetle, Callosobruchus maculatus. |
[So] Source: | J Photochem Photobiol B;174:306-314, 2017 Sep. |
[Is] ISSN: | 1873-2682 |
[Cp] País de publicação: | Switzerland |
[La] Idioma: | eng |
[Ab] Resumo: | Insect pests belonging to the genus Callosobruchus are the major cause of damage to stored pulse crops. Recently, nanotechnology has emerged as a promising tool for pest control. In the present study, we report for the first time the synthesis and biological evaluation of Bacillus thuringiensis coated zinc oxide nanoparticles (Bt-ZnO NPs) on the pulse beetle, Callosobruchus maculatus. The biologically synthesized Bt-ZnO NPs were extensively characterized using UV-Vis spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Transmission electron microscopy (TEM) and Zeta potential. The bio-physical characterization revealed that the Bt-ZnO NPs has a hexagonal wurtzite structures with an average particle size of 20nm. In addition, zeta potential measurement demonstrated that the Bt-ZnO NPs are negatively charged (-12.7mV) and are moderately stable. The biopesticidal effect of Bt-ZnO NPs was tested against the pulse beetle, C. maculatus. Treatment with Bt-ZnO NPs reduced the fecundity (eggs laid) and hatchability of C. maculatus in a dose-dependent manner. A significant delay in the larval, pupal and total development period of C. maculatus was observed after treatment with Bt-ZnO NPs at 25µg/mL. Furthermore, Bt-ZnO NPs are highly effective in the control of C. maculatus and caused 100% mortality at 25µg/mL. The LC value was estimated to be 10.71µg/mL. In addition, treatment with Bt-ZnO NPs decreased the mid-gut α-amylase, cysteine protease, α-glucosidase and glutathione S-transferase (GST) activity in C. maculatus. Our results suggest that Bt-ZnO NPs are effective against C. maculatus and could be used as nanobiopesticides in the control of stored grain insect pests in the future. |
[Mh] Termos MeSH primário: |
Bacillus thuringiensis/metabolismo Coleópteros/efeitos dos fármacos Nanopartículas Praguicidas/química Praguicidas/farmacologia Óxido de Zinco/química Óxido de Zinco/farmacologia
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[Mh] Termos MeSH secundário: |
Animais Coleópteros/enzimologia Coleópteros/crescimento & desenvolvimento Tamanho da Partícula Praguicidas/metabolismo Óxido de Zinco/metabolismo
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[Pt] Tipo de publicação: | JOURNAL ARTICLE |
[Nm] Nome de substância:
| 0 (Pesticides); SOI2LOH54Z (Zinc Oxide) |
[Em] Mês de entrada: | 1710 |
[Cu] Atualização por classe: | 171116 |
[Lr] Data última revisão:
| 171116 |
[Sb] Subgrupo de revista: | IM |
[Da] Data de entrada para processamento: | 170819 |
[St] Status: | MEDLINE |
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