Salicylic acid-induced nitric oxide enhances arsenic toxicity tolerance in maize plants by upregulating the ascorbate-glutathione cycle and glyoxalase system

Journal of Hazardous Materials
Cengiz KayaParvaiz Ahmad

Abstract

The role of nitric oxide (NO) in salicylic acid (SA)-induced tolerance to arsenic (As) stress in maize plants is not reported in the literature. Before starting As stress (AsS) treatments, SA (0.5 mM) was sprayed to the foliage of maize plants. Thereafter, AsV (0.1 mM as sodium hydrogen arsenate heptahydrate) stress (AsS) was initiated and during the stress period, sodium nitroprusside (SNP 0.1 mM), a NO donor, was sprayed individually or in combination with SA. Furthermore, cPTIO (0.1 mM) was also applied as a NO scavenger during the stress period. Arsenic stress led to significant reductions in plant growth, photosynthesis, water relation parameters and endogenous NO content, but it increased hydrogen peroxide, malondialdehyde, electrolyte leakage, methylglyoxal, proline, the activities of major antioxidant enzymes, and leaf and root As content. The combined treatment of SA+SNP was more effective to reverse oxidative stress related parameters and reduce the As content in both leaves and roots, with a concomitant increase in antioxidant defense system, the ascorbate-glutathione (AsA-GSH) cycle-related enzymes, glyoxalase system enzymes, plant growth, and photosynthetic traits. The beneficial effects of SA were completely aboli...Continue Reading

Citations

Oct 12, 2020·Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine·Khushboo KhatorGyan S Shekhawat
Oct 29, 2020·Journal of Hazardous Materials·Harshita SinghShri Ram Yadav
Feb 1, 2021·Journal of Hazardous Materials·Durgesh Kumar TripathiFrancisco J Corpas
Nov 15, 2020·Journal of Hazardous Materials·Fenglin DengZhong-Hua Chen
Mar 1, 2021·Environmental Pollution·Ashish Kumar SrivastavaPenna Suprasanna
Apr 4, 2021·Plants·Paola I Angulo-BejaranoRocío Cruz-Ortega
Apr 28, 2021·The Science of the Total Environment·Xudong WeiDaniel C W Tsang
Jul 17, 2021·Plant Cell Reports·Golam Jalal AhammedJinyin Chen
Jul 17, 2021·Journal of Hazardous Materials·Zsuzsanna Kolbert, Attila Ördög

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