Open Access

REVIEW

A Review on Selenium Function under Oxidative Stress in Plants Focusing on ROS Production and Detoxification

by Armin Saed-Moucheshi^1,*, Elham Rezaei Mirghaed²

1 Horticulture and Crop Research Department, Kermanshah Agricultural and Natural Resources Research and Education Center (AREEO), Kermanshah, Iran
2 Department of Agricultural Biotechnology, Faculty of Agriculture, Lorestan University, Khorramabad, Iran

* Corresponding Author: Armin Saed-Moucheshi. Email:

(This article belongs to the Special Issue: Selenium, Silicon and their Nanoparticles-mediated Environmental Stress Tolerance in Crop Plants)

Phyton-International Journal of Experimental Botany 2023, 92(7), 1921-1941. https://doi.org/10.32604/phyton.2023.027810

Received 13 December 2022; Accepted 03 January 2023; Issue published 29 May 2023

Abstract

One of the main reasons of the annual reduction in plant production all around the world is the occurrence of abiotic stresses as a result of an unpredicted changes in environmental conditions. Abiotic stresses basically trigger numerous pathways related to oxygen free radicals’ generation resulting in a higher rate of reactive oxygen species (ROS) production. Accordingly, higher rate of oxygen free radicals than its steady state causes to oxidize various types of molecules and compartments within the plants’ cells and tissues. Oxidative stress is the result of high amount free radicals of oxygen interfering with different functions leading to undergo significant changes from molecular to phenotypic levels. In response to oxidative stress, plants deploy different enzymatic and non-enzymatic antioxidant mechanisms to detoxify extra free radicals and get back to a normal state. Applying some specific treatments have shown to significantly affect the antioxidant capacity and efficiency of the stressed cells and compartments. One of such reportedly effective treatments is the utilization of selenium (Se) element in stressed plants. Over the past years some different experiments evaluated the probable effect or efficiency of Se regarding its impact on plant under oxidative stress. Accordingly, based on the recent studies, Se has a significant role in plant responses to abiotic stresses probably due to its ability to improve the plants’ tolerance to oxidative stress. The significant influences of Se, and its related components such as nano-selenium, in plants under oxidative stress rooting from abiotic stresses, along with the new finding pertaining to its metabolism and translocation mechanisms inside the plant cells under oxidative stress condition are clearly explained in this review. However, there are still lack of a comprehensive explanation related to the precise mechanism of Se in plants under oxidative stress.

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