Research Article | OPEN ACCESS
Protective Effect of Exogenous PGRs on Chlorophyll Fluorescence and Membrane Integrity of Rice Seedlings under Chilling Stress
1Farhad Mohabbati, 2Farzad Paknejad, 2Saeed Vazan, 2Davood Habibi, 3Mohammad Reza Tookallo and 4Foad Moradi
1Department of Agronomy
2Agricultural Research Centre, Karaj Branch, Islamic Azad University, Karaj, Iran
3Bojnord Branch, Islamic Azad University, Bojnord, Iran
4Department of Molecular Physiology, Agricultural Biotechnology Research Institute of Iran, Karaj, Iran
Research Journal of Applied Sciences, Engineering and Technology 2013 1:146-153
Received: May 01, 2012 | Accepted: May 26, 2012 | Published: January 01, 2013
Abstract
The effects of chilling stress on chlorophyll content, chlorophyll fluorescence and Malondialdehyde (MDA; a biomarker for lipid peroxidation in membrane) were evaluated in rice (Oryza sativa) seedlings during chilling stress and subsequent recovery phase using a phytotron. The effects of Indole-3-Acetic Acid (IAA), Abscisic Acid (ABA) and Kinetin (CK) exogenously foliar applied to three rice genotypes differing in cold tolerance were probed. Under chilling stress reduced levels of photo inhibition and MDA due to hormone application in relation to no hormone treatment demonstrated the significant effect of applied hormones to induce chilling tolerance in the genotypes. There were different effects of hormones on genotypes and even on organs (root and shoot) in the case of MDA content, moreover the strategy for cold tolerance differed among the genotypes.
Keywords:
Low temperature, MDA, membrane integrity, phytohormone,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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