Home    eJManager.com Add Your Journal   |    Follow on Twitter   |    Subscribe to List

Directory for Medical Articles
 

Open Access

-



Roles of Calcium and ABA in Alleviating Drought Stress Effects on Triticum aestivum L. Plants

Essam Alden Abo-Kassem; Sherien Sobhy; Samha dowidar; Nasser Sewelam.

Abstract
Drought is one of the lethal environmental stress factors that diminish the crop production worldwide. In this study, we assessed the damaging effects of drought stress; imposed by 20% polyethylene glycol (6000) treatments on wheat seedlings, and investigated the possible roles of calcium and abscisic acid (ABA) in alleviating drought stress. The pretreatment of wheat seedlings with calcium and ABA has led to improvements in growth criteria, content of photosynthetic pigments and membrane integrity under drought stress treatment. As a defense mechanism, the activity of peroxidase, and content of proline have increased under drought stress, but deceased when the wheat seedlings have been pretreated with calcium. The application of the calcium channel blocker; lanthanum chloride (LaCl3) has confirmed the alleviating role of calcium to the drought stress damaging effects. In this study, amino acids content, total soluble proteins and carbohydrates have been analyzed to further assess the physiological effects of drought and the alleviating roles of calcium and ABA. The improvements in yield criteria including % of mature grains per spike and weight of grains per spike with calcium pretreatment have confirmed the prolonged effect of calcium in alleviating the damaging effects of drought stress on wheat plants. Taken together, data presented in this study showed that calcium treatment may represent a powerful agent to counterattack the lethal effects of drought stress on plants.

Key words: Drought;PEG;calcium;abscisic acid;alleviation;photosynthesis;antioxidants;wheat


Full text links

Share this Article




ScopeMed Home
Follow ScopeMed on Twitter
Article Tools
Job Opportunities/Service Offers
eJManager OJMS
eJPort Journal Hosting
About ScopeMed
Terms & Conditions
Privacy Policy
Suggest a Journal
Publisher Login
Contact Us

The articles in Scopemed are open access articles licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
ScopeMed is a Service of eJManager LLC Publishing for Scientific Publications. Copyright © ScopeMedź Information Services.
Scopemed Buttons