• Namira Arif
• Vaishali Yadav
• D. K. Chauhan

Silver nanoparticles (AgNPs) are used in several commercial products, medical and diagnostic treatments, and as nano-pesticide and nano-herbicide. On release, it contaminates the environment and ultimately reaches the agriculture field, causes an alteration in the plant growth and development, whereas their negatives impacts could be restored by the exogenous application of indole-3-acetic acid (IAA). Therefore, the present study has been carried out to examine the potential role of IAA on the toxicity of AgNPs in Oryza sativa seedlings. AgNPs at both doses (200 and 500 µM) showed a remarkable decline in growth, photosynthetic pigments, and protein content. AgNPs also negatively affected the kinetics of photosystem II (PS II) photochemistry that leads to oxidative stress as confirmed by in- vitro and in-vivo visualization of superoxide radicle (SOR) and hydrogen peroxide (H2O2) that ultimately cause cell death. While the addition of IAA along with AgNPs mitigates the toxicity by increasing the photosynthetic pigment, protein content and it also repairs the kinetics of PSII photosystem and reduces the generation of reactive oxygen species. Therefore, this study concludes that IAA ameliorates the negative impacts caused by AgNPs and improves plant growth.

Growth, photosynthetic pigment, protein, in- vitro and in-vivo ROS generation

"Assessment of indole-3-acetic acid induced morpho-physiological responses and ROS scavenging in silver nanoparticles stressed Oryza sativa seedlings.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 8, page no.1539-1549, August-2020, Available :http://www.jetir.org/papers/JETIR2008199.pdf

"Assessment of indole-3-acetic acid induced morpho-physiological responses and ROS scavenging in silver nanoparticles stressed Oryza sativa seedlings.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 8, page no. pp1539-1549, August-2020, Available at : http://www.jetir.org/papers/JETIR2008199.pdf