Seed priming with methyl jasmonate mitigates copper and cadmium toxicity by modifying biochemical attributes and antioxidants in Cajanus cajan

Saudi Journal of Biological Sciences

Shruti Kaushik¹  Gurvarinder Kaur¹  Geetika Sirhindi¹  Poonam Sharma¹  Fahad A. Al-Misned²  Hesham M. Shafik³  Anil Kumar Singh⁴ 

[1] Department of Botany, Punjabi University, Patiala 147002, Punjab, India;Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;Hungarian Academy of Sciences, Limnoecology Research Group, University of Pannonia, Gyetem u. 10, H-8200 Veszprem, Hungary;ICAR-National Institute for Plant Biotechnology, LBS Centre, Pusa Campus, New Delhi 110012, India;

关键词: Cadmium toxicity;    Reactive oxygen species;    Antioxidant defense system;    Methyl jasmonate;    Cajanus cajan L.;   

DOI  :  

来源: DOAJ

【 摘 要 】

Contamination of agricultural soils with heavy metals (HMs) has posed major threat to the environment as well as human health. The aim of this study was to appraise the efficiency of key-antioxidant enzymes in enhancing plants’ tolerance to HMs (heavy metals) like copper (Cu) and Cadmium (Cd), under the action of methyl jasmonate (Me-JA) in Cajanus cajan L. Seeds of C. cajan treated with Me-JA (0, 1 nM) were discretely subjected to noxious concentrations of Cu and Cd (0, 1, 5 mM) and raised for 12 days under controlled conditions in plant growth chamber for biochemical analysis. In contrast to Cd, Cu triggered oxidative stress more significantly (44.54% in 5 mM Cu increase in MDA as compared to control) and prominently thereby affecting plants’ physiological and biochemical attributes. By activating the antioxidant machinery, Me-JA pre-treatment reduced HMs-induced oxidative stress, increased proline production, glutathione (41.95% under 5 mM Cu when treated with 1 nM Me-JA treatment) and ascorbic acid content by 160.4 % under aforemtioned treatments thus improving the redox status. Thus, in light of this our results put forward a firm basis of the positive role that Me-JA might play in the mitigation of oxidative stress caused due to HMs stress by stimulating antioxidant defense system leading to overall improvement of growth of C. cajan seedlings.

【 授权许可】

Unknown