Exogenous salicylic acid improves photosynthesis and growth through increase in ascorbate-glutathione metabolism and S assimilation in mustard under salt stress

Plant Signaling & Behavior
R NazarN A Khan

Abstract

Ascorbate (AsA)-glutathione (GSH) cycle metabolism has been regarded as the most important defense mechanism for the resistance of plants under stress. In this study the influence of salicylic acid (SA) was studied on ascorbate-glutathione pathway, S-assimilation, photosynthesis and growth of mustard (Brassica juncea L.) plants subjected to 100 mM NaCl. Treatment of SA (0.5 mM) alleviated the negative effects of salt stress and improved photosynthesis and growth through increase in enzymes of ascorbate-glutathione pathway which suggest that SA may participate in the redox balance under salt stress. The increase in leaf sulfur content through higher activity of ATP sulfurylase (ATPS) and serine acetyl transferase (SAT) by SA application was associated with the increased accumulation of glutathione (GSH) and lower levels of oxidative stress. These effects of SA were substantiated by the findings that application of SA-analog, 2,6, dichloro-isonicotinic acid (INA) and 1 mM GSH treatment produced similar results on rubisco, photosynthesis and growth of plants establishing that SA application alleviates the salt-induced decrease in photosynthesis mainly through inducing the enzyme activity of ascorbate-glutathione pathway and increa...Continue Reading

References

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Citations

Aug 20, 2015·International Journal of Molecular Sciences·Mayank Anand GururaniHanhong Bae
Mar 15, 2019·Journal of Experimental Botany·Wilena Telman, Karl-Josef Dietz
Jul 20, 2019·Biomolecules·Anket SharmaBingsong Zheng
Jun 9, 2020·Plant Signaling & Behavior·Abolghassem EmamverdianFarzad Mokhberdoran
Jul 26, 2018·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Yongqing YanWei Liu
Sep 20, 2020·Journal of the Science of Food and Agriculture·Mohamed S SheteiwyHaiying Lu
Dec 10, 2020·Plant Physiology and Biochemistry : PPB·Adnan Noor ShahYouhong Song
May 10, 2019·Emerging Topics in Life Sciences·John N Ferguson
Nov 5, 2020·Polymers·Birgitte Hjelmeland McDonagh, Gary Chinga-Carrasco
Jun 3, 2021·International Journal of Molecular Sciences·Kalaivani NadarajahNur Sabrina Natasha Abdul Rahman
Jun 8, 2021·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Muhammad AqibMuhammad Munir Usmani

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Methods Mentioned

BETA
AsA
salt stress

Software Mentioned

SPSS

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