About this Agricultural and Biological Sciences article

Endogenous Indole‐3‐acetic Acid and Nitric Oxide Are Required for Calcium‐mediated Alleviation of Copper Oxide Nanoparticles Toxicity in Wheat Seedlings by Vaishali Yadav; Rafaqat Ali Gill; Namira Arif; Skhawat Ali Gill; Vijay Pratap Singh; Naleeni Ramawat; Weijun Zhou; Durgesh Kumar Tripathi; Devendra K. Chauhan is a Agricultural and Biological Sciences article available to read on EtoBox.

## ABSTRACT The action of nanoparticles is increasingly being studied in recent years to minimize their toxic impacts. Besides this, efforts are also being made to minimize their toxicity in crop plants by using various chemicals, i.e. nutrients, donors of signaling molecules, plant hormones, and so on. However, associated alleviatory mechanisms are still not well known. Therefore, in the present study, we have investigated the toxicity of CuONPs and its mitigation by exogenously applied calcium (Ca). The focus was on whether indole‐3‐acetic acid (IAA) or endogenous nitric oxide (NO) has any role in accomplishing this task. CuONPs declined wheat growth due to increased accumulation of Cu and oxidative stress markers such as superoxide radicals, hydrogen peroxide, and lipid peroxidation (malondialdehyde) and it was also accompanied by a decline in endogenous NO. CuONPs also altered the redox status of ascorbate and glutathione by inhibiting the activity of their regenerating enzymes. This collectively leads to cell death in wheat seedlings. However, exogenous supplementation of Ca mitigated toxic effects of CuONPs by reducing the excess accumulation of Cu, which caused remarkable en

Author

Vaishali Yadav; Rafaqat Ali Gill; Namira Arif; Skhawat Ali Gill; Vijay Pratap Singh; Naleeni Ramawat; Weijun Zhou; Durgesh Kumar Tripathi; Devendra K. Chauhan

Publisher

Wiley

Published

2021

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)