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2024 Speakers

Pushpa Lohani

Pushpa Lohani, Speaker at Plant Biology Conferences
G B Pant University of Agriculture & Technology, India
Title : Zinc-chitosan-salicilic acid nanoparticles enhance tolerance and augment yield in wheat (Triticum aestivum L.) during drought


Wheat (Triticum aestivum L.) is an important cereal crop worldwide and drought has become a limiting factor for its growth as well as yield. A field experiment was conducted during Rabi season of 2020-21 using randomized block design at Pantnagar Centre for Plant Genetic Resources, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand to study if there is any effect of zinc-chitosan-salicylic acid (ZCS) nanoparticles for providing drought tolerance in wheat without compromising the yield. The morpho-physiological and biochemical responses of wheat plants to different concentrations of ZCS nanoparticles (100, 200 and 400 ppm) under water stress condition were studied. The plants treated with 100 ppm ZCS nanoparticles showed significant increase in plant height, root length, number of leaves, chlorophyll and carotenoid content, free proline and ascorbate content under water stress condition. There was a decrease in the malondialdehyde content with the application of ZCS nanoparticles at 100 ppm concentration. Specific activity of antioxidant enzymes like ascorbate peroxidase, guaiacol peroxidase, glutathione reductase and superoxide dismutase was found to increase gradually with the increase in ZCS nanoparticles concentrations. Grain yield/ plant significantly increased (≈ 50%) with foliar application of ZCS nanoparticles at 100 ppm concentration under water stress condition. Application of nanoparticles at 200 and 400 ppm concentrations did not show any promising result possibly be due to toxicity effect. From this study, it was concluded that zinc-chitosan-salicylic acid nanoparticles played an important role in mitigating drought stress of wheat and it also boosted grain yield of wheat under water stress condition by altering metabolism and activating ROS scavenging pathway.


Dr. Pushpa Lohani received MSc. in Biotechnology from Banasthali Vidyapith, India in 1997. She joined research group at Central Drug Research Institute, India and obtained her PhD degree from the same institute in 2003. She joined as Assistant Professor at Department of Molecular Biology & Genetic Engineering, College of Basic Science and Humanities,G. B. Pant University of Agriculture & Technology, Pantnagar, India in the year 2006. Her research focuses on nanoparticle mediated drought recovery and transcriptional regulation during drought tolerance in plants. She has published many papers in international journal of repute and is recipient of many awards.

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