Abstract
Susceptibility of plants to salinity stress is a looming threat to crop productivity worldwide, thereby warranting the strategies to counter stress. We investigated the effects of combined foliar treatment with salicylic acid (SA) and methyl jasmonate (MeJA) on the growth and development of two elite varieties of potato under salinity stress. The salinity stress manifested membrane damage, electrolyte leakage, and production of H2O2 and free radical superoxide anion. Application of SA or MeJA individually could not significantly improve the performance of potato plants exposed to salinity stress. However, treatment with combinations of SA and MeJA synergistically mitigated the adverse effects of salinity, as reflected by reduced membrane damage and electrolyte leakage and lower accumulation of H2O2 and free radical superoxide anion. Moreover, plants treated with the combination treatment had higher relative water content and redox pools of ascorbate and glutathione under salinity stress. The treatment promoted the accumulation of K+ and lowered the Na+ content. SA and MeJA synergistically enhanced the activities of the antioxidant enzymes in the Halliwell-Asada pathway and modulated the photosynthetic and transpiration rates. Overall, our results indicate that the combined foliar treatments with SA and MeJA have positive effects on the growth, development, and yield of potato through maintenance of ion homeostasis and photosynthetic traits.
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16 May 2023
A Correction to this paper has been published: https://doi.org/10.1007/s00344-023-10991-4
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Acknowledgements
DK acknowledges University Grants Commission (UGC) Start-Up Research Grant [No.F.30-352/2017(BSR); FD Diary No.6668] India, for providing financial support for this work. Department of Botany, Central University of Jammu and Centre of Advanced study in Botany, Institute of Science, Banaras Hindu University and Institute of Eminence (IoE) seed grant (Dev. No. 6031 (B), Banaras Hindu University for providing financial support to the laboratory and necessary facilities and infrastructural support. DK also acknowledges Science and Engineering Research Board, (Grant No-EEQ/2016/000487 and EEQ/2021/000593) for providing financial support to the laboratory.
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This study is supported by the University Grants Commission Start-Up-Research Grant, No. F.30-352/2017 (BSR) and Science and Engineering Research Board, EEQ/2016/000487 and EEQ/2021/000593 to Deepak Kumar
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The work presented here was carried out in collaboration among all the authors. DK conceived and designed the research. SS, AM, MR conducted the experiments and analysed the data. PP performed the statistical analyses used in the manuscript. SS, MR, AM and DK wrote the manuscript, and AR, PP, RP and DK analyzed the data and provided valuable input and edited the manuscript. All authors read and approved the final manuscript.
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Shekhar, S., Mahajan, A., Pandey, P. et al. Salicylic Acid and Methyl Jasmonate Synergistically Ameliorate Salinity Induced Damage by Maintaining Redox Balance and Stomatal Movement in Potato. J Plant Growth Regul 42, 4652–4672 (2023). https://doi.org/10.1007/s00344-023-10956-7
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DOI: https://doi.org/10.1007/s00344-023-10956-7