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Role of salicylic acid on physiological and biochemical mechanism of salinity stress tolerance in plants

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Abstract

Salinity stress is one of the major abiotic stresses affecting plant growth and productivity globally. In order to improve the yields of plants growing under salt stress bear remarkable importance to supply sustainable agriculture. Acclimation of plants to salinized condition depends upon activation of cascade of molecular network involved in stress sensing/perception, signal transduction, and the expression of specific stress-related genes and metabolites. Isolation of salt overly sensitive (SOS) genes by sos mutants shed us light on the relationship between ion homeostasis and salinity tolerance. Regulation of antioxidative system to maintain a balance between the overproduction of reactive oxygen species and their scavenging to keep them at signaling level for reinstating metabolic activity has been elucidated. However, osmotic adaptation and metabolic homeostasis under abiotic stress environment is required. Recently, role of phytohormones like Abscisic acid, Jasmonic acid, and Salicylic acid in the regulation of metabolic network under osmotic stress condition has emerged through crosstalk between chemical signaling pathways. Thus, abiotic stress signaling and metabolic balance is an important area with respect to increase crop yield under suboptimal conditions. This review focuses on recent developments on improvement in salinity tolerance aiming to contribute sustainable plant yield under saline conditions in the face of climate change.

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Acknowledgments

Shruti Gautam is thankful to CSIR for financial support in the form of award of SRF. (Award No. 08/396(0004)/2005-EMR-1 dated 25-04-2008).

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  1. Plant Physiology Lab, Department of Botany, Udai Pratap Autonomous College, Affiliated to Mahatma Gandhi Kashi Vidyapeeth University, Varanasi, 221002, Uttar Pradesh, India

    Pramod Kumar Singh & Shruti Gautam

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Correspondence to Pramod Kumar Singh.

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Communicated by A. K. Kononowicz.

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Singh, P.K., Gautam, S. Role of salicylic acid on physiological and biochemical mechanism of salinity stress tolerance in plants. Acta Physiol Plant 35, 2345–2353 (2013). https://doi.org/10.1007/s11738-013-1279-9

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