D. Jini
Hindustan Institute of Technology and Science, India.
Title: Role of Salicylic acid in Salt Overly Sensitive (SOS) pathway genes for salt tolerance in Oryza sativa L.
Biography
Biography: D. Jini
Abstract
Soil salinity is the most important problem of rice production in coastal zones. Improvement of rice plants for the salt tolerance is an important way for the economic utilization of coastal zones. Salicylic acid (SA) is one of the important phenolic compounds that reduce salt stress impact on plants. Methods: In this research, the alleviative effect of SA under salt stress condition in rice plants during germination was evaluated and its role in the ionic (Na+, Clˉ and K+) accumulation was determined by Inductively Coupled Plasma Mass Spectrometry and Ion Chromatography. The salt alleviative effect of SA in the Salt Overly Sensitive (SOS) pathway genes was studied by qRT-PCR analysis. Results: The study showed that the reduced rate of germination by the salt stress was recovered by the SA application through decreased accumulation of Na+ and Clˉ ions. The depletion in the K+ content was improved by the SA treatment. The increased level of all the selected SOS pathway genes by the NaCl treatment were decreased by the SA application under salt stress condition in ASD16 that was correlated with the decreased accumulation of Na+ and Clˉ ionic accumulation and distribution. Conclusion: The present study established that the application of SA could alleviate the adverse effects of salt stress in ASD16 and BR26 rice plants and triggered most of the genes in SOS pathway. So the SA could be used as a potential growth regulator to improve plant growth under salinity conditions.