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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP
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    Abstract - Issue Mar 2021, 42 (2)                                     Back


nstantaneous and historical temperature effects on a-pinene

Role of zinc oxide nanoparticles in alleviating arsenic mediated stress in early growth stages of wheat  

J. Kumar1*, S. Kumar1, S. Mishra2 and A. K. Singh1 

1Department of Botany, Plant Physiology and Biochemistry, Dr. Rajendra Prasad Central Agricultural University, Samastipur-848 125, India

2Department of Fingerprinting, College of Biotechnology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut-250 110, India

*Corresponding Author Email : jatin.jehreela009@gmail.com

 

 

Received: 13.06.2020                                                                   Revised: 15.11.2020                                                    Accepted: 15.12.2020

 

 

 

Abstract

Aim: The present study was undertaken to assess the role of zinc oxide nanoparticles (ZnO NPs) in alleviation of arsenic (As) mediated stress on seed germination and seedling growth in wheat.

Methodology: Experiments were performed in petri dishes. Wheat (Triticum aestivum L., var. HD2967) seeds were subjected to seven independent treatments, viz., control, zinc sulphate (ZnSO4, 25ppm), ZnO NPs  (25ppm),  As (1ppm),  As (10ppm), As (1ppm) + ZnO NPs (25ppm), As (10ppm) + ZnO NPs (25ppm). All parameters were studied in 7-day-old seedlings.

Results: It was observed that arsenic treatment decreased the germination percentage, shoot length, root length, seedling vigour, relative water content (RWC), membrane stability index (MSI), chlorophyll, carotenoid and protein content, while it increased the activity of super oxide dismutase (SOD) and peroxidase (POX) as compared to control. However, under ZnO NPs + As treatment, the adverse effect of As was alleviated, which was reflected in terms of  increased germination percentage, shoot and root growth, chlorophyll, carotenoid, RWC, MSI and protein content.      

Interpretation: On the whole, this study deciphers the possible involvement of ZnO NPs in reducing As toxicity through modulating physiological and biochemical parameters. However, more research is required under field conditions, to use ZnO NPs to reduce the risk of arsenic toxicity in wheat crop.       

Key words: Arsenic, Nano Particles, Seedling, Wheat, Zinc

 

 

 

 

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