Wild Relatives of Wheat Respond Well to Water Deficit Stress : A Comparative Study of Antioxidant Enzyme Activities and Their Encoding Gene Expression

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Pour-Aboughadareh , A , Omidi , M , Naghavi , M R , Etminan , A , Mehrabi , A A & Poczai , P 2020 , ' Wild Relatives of Wheat Respond Well to Water Deficit Stress : A Comparative Study of Antioxidant Enzyme Activities and Their Encoding Gene Expression ' , Agriculture (Basel) , vol. 10 , no. 9 , 415 . https://doi.org/10.3390/agriculture10090415

Title: Wild Relatives of Wheat Respond Well to Water Deficit Stress : A Comparative Study of Antioxidant Enzyme Activities and Their Encoding Gene Expression
Author: Pour-Aboughadareh, Alireza; Omidi, Mansoor; Naghavi, Mohammad Reza; Etminan, Alireza; Mehrabi, Ali Ashraf; Poczai, Peter
Contributor organization: Botany
Embryophylo
Date: 2020-09
Language: eng
Number of pages: 13
Belongs to series: Agriculture (Basel)
ISSN: 2077-0472
DOI: https://doi.org/10.3390/agriculture10090415
URI: http://hdl.handle.net/10138/320801
Abstract: Previous studies have revealed that some wild wheat accessions respond well to water deficit treatments and have a good potential in terms of photosynthetic parameters, root system architecture, and several physiological properties. However, the biochemical responses and molecular mechanisms of antioxidant-encoding genes remain to be elucidated. Herein, we investigated the most tolerant accessions fromA. crassa,Ae. tauschii, andAe. cylindricapreviously identified from a core collection in previous studies, along with a control variety of bread wheat (T. aestivumcv. Sirvan) through measuring the shoot fresh and dry biomasses; the activities of antioxidant enzymes (including ascorbate peroxidase (APX), catalase (CAT), guaiacol peroxidase (GPX), and peroxidase (POD)); and the relative expression ofCAT, superoxide dismutase (MnSOD), andGPXandAPXgenes under control and water deficit conditions. Water deficit stress caused a significant decrease in the shoot biomasses but resulted in an increase in the activity of all antioxidant enzymes and relative expression of antioxidant enzyme-encoding genes. Principal component analysis showed a strong association between the shoot dry biomass and the activity of CAT, POD, and APX, as well asMnSODgene expression. Thus, these traits can be used as biomarkers to screen the tolerant plant material in the early growth stage. Taken together, our findings exposed the fact thatAe. tauschiiandAe. crassarespond better to water deficit stress thanAe. cylindricaand a control variety. Furthermore, these accessions can be subjected to further molecular investigation.
Subject: Aegilopsspp
oxidative stress
gene expression
physio-chemical properties
enzyme activity
DROUGHT STRESS
POTENTIAL SOURCES
ABIOTIC STRESS
ASCORBATE
SALINITY
VARIABILITY
PROGENITORS
RESISTANCE
TOLERANCE
CULTIVARS
11831 Plant biology
1181 Ecology, evolutionary biology
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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