Nano-Iron and Nano-Zinc Induced Growth and Metabolic Changes in Vigna radiata

Neelam Rani, Kusum Kumari, Parul Sangwan, Poonam Barala, Jyoti Yadav, Vijeta, Rahul and Vinita Hooda
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Neelam Rani: Department of Botany, Faculty of Life Sciences, Maharshi Dayanand University, Rohtak 124001, India
Kusum Kumari: Department of Botany, Faculty of Life Sciences, Maharshi Dayanand University, Rohtak 124001, India
Parul Sangwan: Department of Botany, Faculty of Life Sciences, Maharshi Dayanand University, Rohtak 124001, India
Poonam Barala: Department of Botany, Faculty of Life Sciences, Maharshi Dayanand University, Rohtak 124001, India
Jyoti Yadav: Department of Botany, Faculty of Life Sciences, Maharshi Dayanand University, Rohtak 124001, India
Vijeta: Department of Botany, Faculty of Life Sciences, Maharshi Dayanand University, Rohtak 124001, India
Rahul: Department of Botany, Faculty of Life Sciences, Maharshi Dayanand University, Rohtak 124001, India
Vinita Hooda: Department of Botany, Faculty of Life Sciences, Maharshi Dayanand University, Rohtak 124001, India

Sustainability, 2022, vol. 14, issue 14, 1-18

Abstract: The widespread industrial use and consequent release of nanosized iron (nFe 3 O 4 ) and zinc oxide (nZnO) particles into the environment have raised concerns over their effects on living organisms, including plants. These nanoparticles are the source of their respective metal ions and although plants require both Fe and Zn ions for proper growth, excessive levels of these metals are toxic to them. A better understanding of the effects of these nanoparticles on plants also offers an opportunity for their useful applications in agriculture. The present work evaluates the changes in seed germination, plant growth, photosynthetic capacity, levels of biomolecules and antioxidant enzymes in Vigna radiata (L.) Wilczek when grown in the presence of nFe 3 O 4 (size 1–4 nm) and nZnO (size 10–20 nm) and compared to the control plants. The plants were raised hydroponically for up to 14 days at two different concentrations of nanoparticles, viz. 10 and 100 mg/L. Inductively coupled plasma mass spectrometry (ICP-MS) results established that V. radiata can accumulate Fe and Zn in shoots with high efficiency. The results indicated that nFe 3 O 4 had a favourable effect on V. radiata , whereas no apparent benefit or toxicity of nZnO was observed at the tested concentrations.

Keywords: nanotoxicology; mung bean; abiotic stress; oxidative stress; antioxidant enzymes (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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