Effects of Nano Silver Oxide and Silver Ions on Growth of Vigna radiata

Abstract

Transformation of silver oxide nanoparticles (nano-Ag2O) to silver nanoparticles (nano-Ag) and silver ions in environment is possible which might pose toxicity to plants and other species. The objective of this study was to study effects of nano-Ag2O and silver ions on growth of Mung bean (Vigna radiata) seedlings. V. radiata seeds were exposed to nano-Ag2O and silver ions (concentration range: 4.3 × 10(-7), 4.3 × 10(-6), 4.3 × 10(-5), 4.3 × 10(-4), and 4.3 × 10(-3) mol/L) for 6 days. Root length, shoot length and dry weight of seedlings were found to decrease due to exposure of nano-Ag2O and silver ions. These findings indicate silver ions to be more toxic to V. radiata seeds than nano-Ag2O. Silver content in seedlings was found to increase with increasing concentrations of nano-Ag2O and silver ions. Overall, findings of the present study add to the existing knowledge of phytotoxicity of silver-based nanoparticles of different chemical compositions to V. radiata seeds and need to be considered during use of nanoparticles-contaminated water for irrigation purposes.

Silver Nanoparticles Increase Nitrogen, Phosphorus, and Potassium Concentrations in Leaves and Stimulate Root Length and Number of Roots in Tomato Seedlings in a Hormetic Manner

“…Similarly, the addition of 1000 mg/L AgNPs to mung bean (Vigna radiata) plants decreased shoot length. 55 Contrastingly, the application of 40, 60, and 100 mg/ L AgNPs to basil (Ocimum basilicum) plants improved plant height by 23.93, 33.79, and 28.52% compared to the control. 56 Root length in the Vengador cultivar increased significantly with the addition of AgNPs, although in the Rio Grande cultivar the application of AgNPs showed no significant effects on this variable.…”

“…12 In mung bean, the application of 100 and 1000 mg/L AgNPs decreased root length. 55 Furthermore, the application of 40 mg/L AgNPs to mung bean and sorghum plants decreased vegetative growth, 16 and its addition to water hyssop (Bacopa monnieri) plants reduced root length. 63 These effects may be due to the inhibition of the mitotic index, as well as a potential chromosomal adherence and alterations in the achromatic spindle of meristematic cells caused by the application of AgNPs.…”

Metal and metal oxide nanoparticle toxicity: moving towards a more holistic structure–activity approach

“…The dataset used in this work consists of 935 measurements for half maximal effective (EC 50 ), inhibitory (IC 50 ), and lethal (LC 50 ) concentration toxicity endpoints, obtained from 70 published research papers. 32–37,40–42,55–115 Although most SAR models are built using a specific endpoint, the inclusion of these different half maximal concentrations within the same dataset has been previously addressed. 43,46 The data incorporates measurements for 35 different metal/semimetal oxide and 10 metal nanoparticles (NPs).…”

Influence of Inorganic Metal (Ag, Cu) Nanoparticles on Biological Activity and Biochemical Properties of Brassica napus Rhizosphere Soil

“…The effects of NP seed treatment depend on the type of plant, type and concentration of NPs used, conditions (e.g., temperature), and the duration of the experiment [99][100][101][102].…”