2012 ©
             Publication
Journal Publication
Title of Article Seed priming with hydrogen peroxide alleviates the effects of drought stress in rice (Oryza sativa L.) seedlings 
Date of Acceptance 20 March 2020 
Journal
     Title of Journal NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA 
     Standard SCOPUS 
     Institute of Journal University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca 
     ISBN/ISSN 1842-4309 
     Volume 48 
     Issue
     Month 3
     Year of Publication 2020 
     Page 273-283 
     Abstract Drought stress is a major factor limiting crop growth and yield. Hydrogen peroxide (H2O2) is known as a signalling molecule in the plant cell in which activates multiple physiological changes that play essential roles in tolerance mechanism. This study investigated the effects of seed priming with H2O2 on growth, some physiological characteristics and antioxidant enzyme activities in rice seedling under drought stress. Rice (Oryza sativa L.) cv. ‘Khao Dawk Mali 105’ seeds were primed with 0 (distilled water), 1, 5, 10, and 15 mM H2O2 and grown for 21 days. The seedlings were subjected to drought stress by withholding water for 7 days. The results showed that priming with low concentrations of H2O2 improved plant growth and biomass as well as relative water content, malondialdehyde content, electrolyte leakage. Priming with H2O2, however, had no beneficial effect on chlorophyll content, proline and leaf total soluble sugar. Seed priming with appropriate levels of H2O2 also enhanced antioxidant enzyme activities including superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and guaiacol peroxidase (GPX). It is concluded that seed priming with 2-10 mM H2O2, is beneficial for enhancing drought tolerance in rice seedling by increasing antioxidant capacity, which in turn reduces oxidative stress and damages to the cellular components. 
     Keyword antioxidant enzymes; drought stress; hydrogen peroxide; rice; seed priming  
Author
607020052-3 Miss WEERAPHORN JIRA-ANUNKUL [Main Author]
Science Doctoral Degree

Reviewing Status มีผู้ประเมินอิสระ 
Status ตีพิมพ์แล้ว 
Level of Publication นานาชาติ 
citation true 
Part of thesis true 
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