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Open AccessArticle

Seed Priming with Jasmonic Acid Counteracts Root Knot Nematode Infection in Tomato by Modulating the Activity and Expression of Antioxidative Enzymes

1
Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India
2
Indian Institute of Integrative Medicine (CSIR-IIIM), Council of Scientific and Industrial Research, Canal Road, Jammu 180 001, India
3
State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
4
Department of Zoology, Guru Nanak Dev University, Amritsar 143005, Punjab, India
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Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Department of Botany, S.P. College Srinagar, Jammu and Kashmir 190001, India
*
Author to whom correspondence should be addressed.
Biomolecules 2020, 10(1), 98; https://doi.org/10.3390/biom10010098
Received: 29 October 2019 / Revised: 24 December 2019 / Accepted: 25 December 2019 / Published: 7 January 2020
(This article belongs to the Special Issue Phytohormones)
The environmental stress, biotic as well as abiotic, is the main cause of decreased growth and crop production. One of the stress-causing agents in plants are parasitic nematodes responsible for crop loss. Jasmonic acid (JA) is recognized as one of signaling molecules in defense-related responses in plants, however, its role under nematode infestation is unclear. Therefore, the present study was planned to traverse the role of JA in boosting the activities of antioxidative enzymes in tomato seedlings during nematode inoculation. Application of JA declined oxidative damage by decreasing O2•− content, nuclear and membrane damage under nematode stress. JA treatment elevated the activities of SOD, POD, CAT, APOX, DHAR, GPOX, GR, and PPO in nematode-infested seedlings. Seed soaking treatment of JA upregulated the expression of SOD, POD, CAT, and GPOX under nematode stress. Various amino acids were found in tomato seedlings and higher content of aspartic acid, histidine, asparagine, glutamine, glutamic acid, glycine, threonine, lysine, arginine, B-alanine, GABA, phenylalanine, proline, and ornithine was observed in seeds soaked with JA (100 nM) treatment during nematode inoculation. The results suggest an indispensable role of JA in basal defense response in plants during nematode stress. View Full-Text
Keywords: tomato; Jasmonic acid; root knot nematode; oxidative stress; antioxidant enzyme activity; amino acid profiling tomato; Jasmonic acid; root knot nematode; oxidative stress; antioxidant enzyme activity; amino acid profiling
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Bali, S.; Kaur, P.; Jamwal, V.L.; Gandhi, S.G.; Sharma, A.; Ohri, P.; Bhardwaj, R.; Ali, M.A.; Ahmad, P. Seed Priming with Jasmonic Acid Counteracts Root Knot Nematode Infection in Tomato by Modulating the Activity and Expression of Antioxidative Enzymes. Biomolecules 2020, 10, 98.

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