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J Herbmed Pharmacol. 2014;3: 87-92.
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Original Article

Salicylic acid and methyl jasmonate enhance drought tolerance in chamomile plants

Hossein Nazarli 1*, Ali Ahmadi 1, Javad Hadian 2

1 Department of Agronomy and Plant Breeding, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
2 Medicinal Plants and Drugs Research Institute, University College of Agriculture, University of Shahid Beheshti, Tehran, Iran
*Corresponding Author: *Corresponding author: Hossein Nazarli, University College of Agriculture and Natural Resources, University of Tehran. Karaj, Iran., Email: H_Nazarli@ut.ac.ir

Abstract

Introduction: The dried flowers of chamomile contain many terpenoids and flavonoids contributing to its medicinal properties. Salicylic acid (SA) and methyl jasmonate (MeJA) have antioxidant properties and function as direct radical scavengers. Two Matricaria chamomilla cultivars (Bodgold and Hungary breed seeds) were used in this study to investigate the effects of exogenous application of SA and MeJA on protection against drought stress as well as on changes of malone dialdehyde (MDA) and electrolyte leakage index (ELI), and the fluctuation of proline and soluble sugars content in the leaves under drought stress.

Methods: The experiment was conducted in a factorial design based on randomized complete blocks with three replicates. Chamomile plants were treated by two levels of drought stress as well as two different levels of MeJA (i.e., 0.0 and 100 μM) and SA (i.e., 0.0 and 0.5 mM) solutions.

Results: There was a dramatic drought induced increase in the MDA content (128%) and ELI (49%) in the leaves. Deleterious effect of drought stress was more severe in untreated plants than in treated ones. Treatments with SA and MeJA significantly improved drought tolerance in chamomile plants. These treatments effectively maintained membrane integrity, thereby retarding electrolyte leakage and membrane lipid peroxidation (MDA). Treatments with SA and MeJA were also effective in enhancing the antioxidant concentrations of proline and soluble sugars.

Conclusion: The production of these antioxidants could have been part of a defence system against drought damage, reducing MDA and ELI and maintaining membrane stability.

Keywords: Chamomile, Drought stress, Salicylic acid, Methyl jasmonate

Implication for health policy/practice/research/medical education:

The results indicate that SA and MeJA were found to individually enhance compatible solutes production in leaves but when administered in combination there was no further enhancement in compatible solutes production.

Please cite this paper as: Nazarli H, Ahmadi A, Hadian J. Salicylic acid and methyl jasmonate enhance drought tolerance in chamomile plants. J Herbmed Pharmacol. 2014; 3(2): 87-92.

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ePublished: 01 Dec 2014
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