Jasmonic acid ameliorates alkaline stress by improving growth performance, ascorbate glutathione cycle and glyoxylase system in maize seedlings

Scientific Reports
Mudaser Ahmad MirParvaiz Ahmad

Abstract

Environmental pollution by alkaline salts, such as Na2CO3, is a permanent problem in agriculture. Here, we examined the putative role of jasmonic acid (JA) in improving Na2CO3-stress tolerance in maize seedlings. Pretreatment of maize seedlings with JA was found to significantly mitigate the toxic effects of excessive Na2CO3 on photosynthesis- and plant growth-related parameters. The JA-induced improved tolerance could be attributed to decreased Na uptake and Na2CO3-induced oxidative damage by lowering the accumulation of reactive oxygen species and malondialdehyde. JA counteracted the salt-induced increase in proline and glutathione content, and significantly improved ascorbic acid content and redox status. The major antioxidant enzyme activities were largely stimulated by JA pretreatment in maize plants exposed to excessive alkaline salts. Additionally, increased activities of glyoxalases I and II were correlated with reduced levels of methylglyoxal in JA-pretreated alkaline-stressed maize plants. These results indicated that modifying the endogenous Na+ and K+ contents by JA pretreatment improved alkaline tolerance in maize plants by inhibiting Na uptake and regulating the antioxidant and glyoxalase systems, thereby demonstr...Continue Reading

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Citations

Jun 13, 2019·Environmental Science and Pollution Research International·Mansi SharmaRavinder Kumar Kohli
Dec 26, 2019·Scientific Reports·Adil KhanAbdul Latif Khan
Feb 11, 2020·Frontiers in Plant Science·Eri AdamsRyoung Shin
Nov 20, 2018·Frontiers in Plant Science·Anket SharmaBingsong Zheng
Nov 22, 2020·International Journal of Molecular Sciences·Mirza HasanuzzamanMasayuki Fujita
Jan 13, 2021·Plant Physiology and Biochemistry : PPB·Mona F A DawoodArafat Abdel Hamed Abdel Latef
Jan 1, 2021·Journal of Hazardous Materials·Parvaiz AhmadJörg Rinklebe

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Methods Mentioned

BETA
MDA
AsA
environmental stress
salt stress
flame

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