Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stress

The effect of silicon (Si) was investigated on the major antioxidant enzyme activities including superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), peroxidase (POD), relative water content (RWC), chlorophyll and soluble protein contents, proline (Pro) and glycine betaine (GB) ac...

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Main Authors: Sara Tale Ahmad, Raheem Haddad
Format: Article
Language:English
Published: Czech Academy of Agricultural Sciences 2011-03-01
Series:Czech Journal of Genetics and Plant Breeding
Subjects:
Online Access:https://cjgpb.agriculturejournals.cz/artkey/cjg-201101-0003_study-of-silicon-effects-on-antioxidant-enzyme-activities-and-osmotic-adjustment-of-wheat-under-drought-stress.php
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author Sara Tale Ahmad
Raheem Haddad
author_facet Sara Tale Ahmad
Raheem Haddad
author_sort Sara Tale Ahmad
collection DOAJ
description The effect of silicon (Si) was investigated on the major antioxidant enzyme activities including superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), peroxidase (POD), relative water content (RWC), chlorophyll and soluble protein contents, proline (Pro) and glycine betaine (GB) accumulation in three different growth stages (2nd, 4th leaf and tillering stages) of wheat (Triticum aestivum L.) plants under drought stress. The experiment was performed in a completely randomized design for three treatments including control, drought and Si-drought (2mM silicate sodium/kg) with three replications in a greenhouse. The results indicated that Si partially offset the negative impacts of drought stress increasing the tolerance of wheat by rising Pro and GB accumulation and soluble protein content. Compared with the plants treated with drought, applied Si significantly enhanced the activities of SOD, CAT, APX and POD. In contrast, drought stress caused a considerable decrease in RWC, chlorophyll and soluble protein contents. This Si effect was time-dependent and became stronger in the tillering stage. The results of the present experiment coincided with the conclusion that Si alleviates water deficit of wheat by preventing the oxidative membrane damage and may be associated with plant osmotic adjustment.
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spelling doaj.art-318e1d561ca1446b9090af5f94b5e7062023-02-23T03:30:12ZengCzech Academy of Agricultural SciencesCzech Journal of Genetics and Plant Breeding1212-19751805-93252011-03-01471172710.17221/92/2010-CJGPBcjg-201101-0003Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stressSara Tale Ahmad0Raheem Haddad1Agricultural Biotechnology Department, Imam Khomeini International University, Qazvin, IranAgricultural Biotechnology Department, Imam Khomeini International University, Qazvin, IranThe effect of silicon (Si) was investigated on the major antioxidant enzyme activities including superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), peroxidase (POD), relative water content (RWC), chlorophyll and soluble protein contents, proline (Pro) and glycine betaine (GB) accumulation in three different growth stages (2nd, 4th leaf and tillering stages) of wheat (Triticum aestivum L.) plants under drought stress. The experiment was performed in a completely randomized design for three treatments including control, drought and Si-drought (2mM silicate sodium/kg) with three replications in a greenhouse. The results indicated that Si partially offset the negative impacts of drought stress increasing the tolerance of wheat by rising Pro and GB accumulation and soluble protein content. Compared with the plants treated with drought, applied Si significantly enhanced the activities of SOD, CAT, APX and POD. In contrast, drought stress caused a considerable decrease in RWC, chlorophyll and soluble protein contents. This Si effect was time-dependent and became stronger in the tillering stage. The results of the present experiment coincided with the conclusion that Si alleviates water deficit of wheat by preventing the oxidative membrane damage and may be associated with plant osmotic adjustment.https://cjgpb.agriculturejournals.cz/artkey/cjg-201101-0003_study-of-silicon-effects-on-antioxidant-enzyme-activities-and-osmotic-adjustment-of-wheat-under-drought-stress.phpdroughtosmotic adjustmentoxidative stresssiliconwheat
spellingShingle Sara Tale Ahmad
Raheem Haddad
Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stress
Czech Journal of Genetics and Plant Breeding
drought
osmotic adjustment
oxidative stress
silicon
wheat
title Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stress
title_full Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stress
title_fullStr Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stress
title_full_unstemmed Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stress
title_short Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stress
title_sort study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stress
topic drought
osmotic adjustment
oxidative stress
silicon
wheat
url https://cjgpb.agriculturejournals.cz/artkey/cjg-201101-0003_study-of-silicon-effects-on-antioxidant-enzyme-activities-and-osmotic-adjustment-of-wheat-under-drought-stress.php
work_keys_str_mv AT sarataleahmad studyofsiliconeffectsonantioxidantenzymeactivitiesandosmoticadjustmentofwheatunderdroughtstress
AT raheemhaddad studyofsiliconeffectsonantioxidantenzymeactivitiesandosmoticadjustmentofwheatunderdroughtstress