Size dependent effects of antifungal phytogenic silver nanoparticles on germination,growth and biochemical parameters of rice (Oryza sativa L), maize (Zea mays L) and peanut (Arachis hypogaea L) |
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| Authors: | Tollamadugu NVKV Prasad Shaik Adam Pasupuleti Visweswara Rao Balam Ravindra Reddy Thimmavajjula Giridhara Krishna |
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| Affiliation: | 1. Nanotechnology Laboratory, Institute of Frontier Technology, Regional Agricultural Research Station, Acharya N G Ranga Agricultural University, Tirupati 517 502 AP, India ; 2. Biotechnology Program, Faculty of Agro‐Based Industry, Universiti Malaysia Kelantan, Campus Jeli 17600 Malaysia ; 3. Department of Statistics, S.V. Agricultural College, Tirupati 517 502 AP, India |
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| Abstract: | Advancement in materials synthesis largely depends up on their diverse applications and commercialisation. Antifungal effects of phytogenic silver nanoparticles (AgNPs) were evident, but the reports on the effects of the same on agricultural crops are scant. Herein, we report for the first time, size dependent effects of phytogenic AgNPs (synthesised using Stevia rebaudiana leaf extract) on the germination, growth and biochemical parameters of three important agricultural crops viz., rice (Oryza sativa L), maize (Zea mays L) and peanut (Arachis hypogaea L). AgNPs with varied sizes were prepared by changing the concentration and quantity of the Stevia rebaudiana leaf extract. As prepared AgNPs were characterized using the techniques, such as high‐resolution transmission electron microscopy, particle size and zeta potential analyser. The measured (dynamic light scattering technique) average sizes of particles are ranging from 68.5 to 116 nm. Fourier transform infrared studies confirmed the participation of alcohols, aldehydes and amides in the reduction and stabilisation of the AgNPs. Application of these AgNPs to three agricultural crop seeds (rice, maize and peanut) resulted in size dependent effects on their germination, growth and biochemical parameters such as, chlorophyll content, carotenoid and protein content. Further, antifungal activity of AgNPs also evaluated against fungi, Aspergillus niger.Inspec keywords: antibacterial activity, silver, nanoparticles, nanomedicine, biochemistry, crops, transmission electron microscopy, Fourier transform infrared spectra, electrokinetic effects, organic compounds, particle size, plant diseases, microorganismsOther keywords: fungi, Aspergillus niger, size 68.5 nm to 116 nm, silver particles, phytoextract, amide functional groups, aldehydes, alcohols, Fourier transform infrared studies, zeta potential analyser, particle size, high‐resolution transmission electron microscopy, Stevia plant leaf extract, agricultural crops, antifungal effects, materials synthesis, Arachis hypogaea L, peanut, Zea mays L, maize, Oryza sativa L, rice, biochemical parameters, growth, germination, antifungal phytogenic silver nanoparticles, size dependent effects |
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