Modulation of Physiological Stress Response of <i>Triticum aestivum</i> L. to Glyphosate by Brassinosteroid Application
The potential of brassinosteroids to modulate the physiological responses of winter wheat (<i>Triticum aestivum</i> L.) to herbicide stress was evaluated. Young winter wheat seedlings were treated with 24-epibrassinolide (EBL) and 24 h later were sprayed with glyphosate. The physiologica...
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2021-10-01
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| author | Elena Shopova Zornitsa Katerova Liliana Brankova Ljudmila Dimitrova Iskren Sergiev Dessislava Todorova Neveen B. Talaat |
| author_facet | Elena Shopova Zornitsa Katerova Liliana Brankova Ljudmila Dimitrova Iskren Sergiev Dessislava Todorova Neveen B. Talaat |
| author_sort | Elena Shopova |
| collection | DOAJ |
| description | The potential of brassinosteroids to modulate the physiological responses of winter wheat (<i>Triticum aestivum</i> L.) to herbicide stress was evaluated. Young winter wheat seedlings were treated with 24-epibrassinolide (EBL) and 24 h later were sprayed with glyphosate. The physiological responses of treated plants were assessed 14 days after herbicide application. Wheat growth was noticeably inhibited by glyphosate. The herbicide application significantly increased the content of the stress markers proline and malondialdehyde (MDA) evidencing oxidative damage. The content of phenolic compounds was decreased in the herbicide-treated plants. Slight activation of superoxide dismutase (SOD) and catalase (CAT) and considerable increase of glutathione reductase (GR) and guaiacol peroxidase (POX) activities were found. Increased POX and glutathione S-transferase (GST) activities were anticipated to be involved in herbicide detoxification. Conjugation with glutathione in herbicide-treated plants could explain the reduction of thiols suggesting unbalanced redox state. EBL application did not alter the plant growth but a moderate activation of antioxidant defense (POX, GR, and CAT activities and phenolic levels) and detoxifying enzyme GST was observed. The hormonal priming provoked a slight decrease in MDA and proline levels. The results demonstrate that EBL-pretreatment partly restored shoot growth and has a potential to mitigate the oxidative damages in glyphosate-treated plants through activation of the enzymatic antioxidant defense and increase of the phenolic compounds. |
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| publishDate | 2021-10-01 |
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| series | Life |
| spelling | doaj.art-180a719b6bf044a5b5d9278ad1b28f8b2023-11-23T00:03:39ZengMDPI AGLife2075-17292021-10-011111115610.3390/life11111156Modulation of Physiological Stress Response of <i>Triticum aestivum</i> L. to Glyphosate by Brassinosteroid ApplicationElena Shopova0Zornitsa Katerova1Liliana Brankova2Ljudmila Dimitrova3Iskren Sergiev4Dessislava Todorova5Neveen B. Talaat6Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, 1113 Sofia, BulgariaInstitute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, 1113 Sofia, BulgariaInstitute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, 1113 Sofia, BulgariaInstitute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, 1113 Sofia, BulgariaInstitute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, 1113 Sofia, BulgariaInstitute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, 1113 Sofia, BulgariaDepartment of Plant Physiology, Faculty of Agriculture, Cairo University, Giza 12613, EgyptThe potential of brassinosteroids to modulate the physiological responses of winter wheat (<i>Triticum aestivum</i> L.) to herbicide stress was evaluated. Young winter wheat seedlings were treated with 24-epibrassinolide (EBL) and 24 h later were sprayed with glyphosate. The physiological responses of treated plants were assessed 14 days after herbicide application. Wheat growth was noticeably inhibited by glyphosate. The herbicide application significantly increased the content of the stress markers proline and malondialdehyde (MDA) evidencing oxidative damage. The content of phenolic compounds was decreased in the herbicide-treated plants. Slight activation of superoxide dismutase (SOD) and catalase (CAT) and considerable increase of glutathione reductase (GR) and guaiacol peroxidase (POX) activities were found. Increased POX and glutathione S-transferase (GST) activities were anticipated to be involved in herbicide detoxification. Conjugation with glutathione in herbicide-treated plants could explain the reduction of thiols suggesting unbalanced redox state. EBL application did not alter the plant growth but a moderate activation of antioxidant defense (POX, GR, and CAT activities and phenolic levels) and detoxifying enzyme GST was observed. The hormonal priming provoked a slight decrease in MDA and proline levels. The results demonstrate that EBL-pretreatment partly restored shoot growth and has a potential to mitigate the oxidative damages in glyphosate-treated plants through activation of the enzymatic antioxidant defense and increase of the phenolic compounds.https://www.mdpi.com/2075-1729/11/11/1156wheatherbicidebrassinosteroidsabiotic stress |
| spellingShingle | Elena Shopova Zornitsa Katerova Liliana Brankova Ljudmila Dimitrova Iskren Sergiev Dessislava Todorova Neveen B. Talaat Modulation of Physiological Stress Response of <i>Triticum aestivum</i> L. to Glyphosate by Brassinosteroid Application Life wheat herbicide brassinosteroids abiotic stress |
| title | Modulation of Physiological Stress Response of <i>Triticum aestivum</i> L. to Glyphosate by Brassinosteroid Application |
| title_full | Modulation of Physiological Stress Response of <i>Triticum aestivum</i> L. to Glyphosate by Brassinosteroid Application |
| title_fullStr | Modulation of Physiological Stress Response of <i>Triticum aestivum</i> L. to Glyphosate by Brassinosteroid Application |
| title_full_unstemmed | Modulation of Physiological Stress Response of <i>Triticum aestivum</i> L. to Glyphosate by Brassinosteroid Application |
| title_short | Modulation of Physiological Stress Response of <i>Triticum aestivum</i> L. to Glyphosate by Brassinosteroid Application |
| title_sort | modulation of physiological stress response of i triticum aestivum i l to glyphosate by brassinosteroid application |
| topic | wheat herbicide brassinosteroids abiotic stress |
| url | https://www.mdpi.com/2075-1729/11/11/1156 |
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