Salicylic Acid Mitigates Arsenic Stress in Rice ( Oryza sativa ) via Modulation of Nitrogen–Sulfur Assimilation, Ethylene Biosynthesis, and Defense Systems

Moksh Mahajan, Faroza Nazir, Badar Jahan, Manzer H. Siddiqui, Noushina Iqbal () and M. Iqbal R. Khan ()
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Moksh Mahajan: Department of Botany, Jamia Hamdard, Hamdard Nagar, New Delhi 110062, India
Faroza Nazir: Department of Botany, Jamia Hamdard, Hamdard Nagar, New Delhi 110062, India
Badar Jahan: Department of Botany, Aligarh Muslim University, Aligarh 202002, India
Manzer H. Siddiqui: Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
Noushina Iqbal: Department of Botany, Jamia Hamdard, Hamdard Nagar, New Delhi 110062, India
M. Iqbal R. Khan: Department of Botany, Jamia Hamdard, Hamdard Nagar, New Delhi 110062, India

Agriculture, 2023, vol. 13, issue 7, 1-18

Abstract: During climate change, various unparalleled perils to agricultural systems have been observed worldwide. The detrimental impacts of heavy metal toxicity (HMs) lead to a considerable decrease in crop productivity and yield, thereby putting the agricultural system at risk and exerting a significant impact on food production. This has sparked significant worry regarding the achievement of the sustainable development goals (SDGs) pertaining to ensuring food and nutritional security for the constantly growing global population. In the current study, we have endeavored to reveal the significance of salicylic acid (SA) under arsenic (As) stress conditions in rice ( Oryza sativa ) plants. Being a toxic metalloid, As has adverse effects on the efficiency of photosynthesis and the assimilation of nitrogen (N) and sulphur (S) growth, and also causes alterations in defense systems and ethylene biosynthesis. The study revealed that the positive influence of SA in promoting nutrient metabolism, photosynthesis and growth under As stress was the result of its interplay with ethylene biosynthesis and the enhanced capacity of defense systems to reduce oxidative stress-mediated cellular injuries and cell deaths. In conclusion, SA can be considered a crucial physiological criterion for the development of As-tolerant rice plants.

Keywords: arsenic; ethylene; nitrogen; sulfur; salicylic acid; rice; tolerance (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
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