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Regulation of Reactive Oxygen Species during Salt Stress in Plants and Their Crosstalk with Other Signaling Molecules—Current Perspectives and Future Directions

Authors :
Mahipal Singh Kesawat
Neela Satheesh
Bhagwat Singh Kherawat
Ajay Kumar
Hyun-Uk Kim
Sang-Min Chung
Manu Kumar
Source :
Plants. 12:864
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

Salt stress is a severe type of environmental stress. It adversely affects agricultural production worldwide. The overproduction of reactive oxygen species (ROS) is the most frequent phenomenon during salt stress. ROS are extremely reactive and, in high amounts, noxious, leading to destructive processes and causing cellular damage. However, at lower concentrations, ROS function as secondary messengers, playing a critical role as signaling molecules, ensuring regulation of growth and adjustment to multifactorial stresses. Plants contain several enzymatic and non-enzymatic antioxidants that can detoxify ROS. The production of ROS and their scavenging are important aspects of the plant’s normal response to adverse conditions. Recently, this field has attracted immense attention from plant scientists; however, ROS-induced signaling pathways during salt stress remain largely unknown. In this review, we will discuss the critical role of different antioxidants in salt stress tolerance. We also summarize the recent advances on the detrimental effects of ROS, on the antioxidant machinery scavenging ROS under salt stress, and on the crosstalk between ROS and other various signaling molecules, including nitric oxide, hydrogen sulfide, calcium, and phytohormones. Moreover, the utilization of “-omic” approaches to improve the ROS-regulating antioxidant system during the adaptation process to salt stress is also described.

Details

ISSN :
22237747
Volume :
12
Database :
OpenAIRE
Journal :
Plants
Accession number :
edsair.doi...........4d49e01fadd4df1c606be3359ee1ebf7
Full Text :
https://doi.org/10.3390/plants12040864