Foliar application of Methyl Jasmonate Methyl Ester elicits differential antioxidant defence and expression of defence‐related genes against early blight disease of tomato

• DOI: 10.1111/jph.13195
• Publication Date: 2023-06-08T17:24:41Z
• Authors: Kumarakrishnan Ka...; Jeyapandi MohanaP...; Mehanathan Mutham...; Nagarathnam Radha...
• Keywords: Methyl jasmonate; Alternaria solani

Abstract Phytohormones are the key regulators of various developmental and physiological processes in plants. In present study, we have examined efficacy Methyl Jasmonate Ester (MJME) as a potent elicitor on inducing resistance factors against early blight disease tomato. Both PKM1 (susceptible) Arka Rakshak (resistant) cultivars tomato were sprayed with different concentrations MJME (1, 5, 10 25 μM) and/or infected A. solani . pre‐treatment followed by leaves showed higher accumulation superoxide anion radicals hydrogen peroxide at stages then decreased gradually both resistant susceptible cultivars. A significant increase antioxidant enzyme activity such dismutase, guaiacol peroxidase catalase was evident cultivar compared control. Manifestation symptoms reduced to 60% pre‐treated par cultivar. Quantitative real‐time polymerase chain reaction (qRT‐PCR) analysis revealed an induction expression defence‐related genes ACO1, EDS1, LoxD, NP24, NPR1 Sl10EAH30 infection. Interestingly, two‐fold EDS1 gene after treatment The study that could be potential