Advertisement!
Author Information Pack
Editorial Board
Submit article
Special Issue
Editor's selection process
Join as Reviewer/Editor
List of Reviewer
Indexing Information
Most popular articles
Purchase Single Articles
Archive
Free Online Access
Current Issue
Recommend this journal to your library
Advertiser
Accepted Articles
Search Articles
Email Alerts
FAQ
Contact Us
Indian Journal of Biology

Volume  7, Issue 1, January-June 2020, Pages 51-54
 

Review Article

Reactive Oxygen Species (ROS) and Antioxidant Machinery of the Plant System

Rachana Singh

Department of Botany, University of Allahabad, Prayagraj- 211002, India

Choose an option to locate / access this Article:
90 days Access
Check if you have access through your login credentials.        PDF      |
|

Open Access: View PDF

DOI: http://dx.doi.org/10.21088/ijb.2394.1391.7120.7

Abstract

Environmental fluctuation leads to overproduction of ROS, which are extremely toxic and damages cellular biomolecules i.e. nucleic acid, DNA, lipid, and protein. However, the delicate balance between ROS production and antioxidant machinery of the plant is always maintained under normal condition but during stress, this balance comes to a halt. To ensure the plant survival under stressful environment, plants have adopted well equiped antioxidant defense machinery having two forms: (i) Enzymatic such as Superoxide Dismutase (SOD), Ascorbate Peroxidase (APX), Catalase (CAT), Dehydroascorbate Reductase (DHAR), Monodehydroascorbate Reductase (MDHAR), Glutathione Reductase (GR) and Guaiacol Peroxidase (GPX); and (ii) Non-enzymatic such as reduced glutathione (GSH), Ascorbic Acid (AA), Carotenoids, α-tocopherol, proline and flavonoids. In this review, a summarized form of ROS action and their regulation via antioxidant machinery of plant cells have been discussed.

Keywords: Antioxidants, Oxidative stress, Reactive Oxygen speices, Redox status.
 

 


Corresponding Author : Rachana Singh