20-Hydroxyecdysone protects wheat seedlings (Triticum aestivum L.) against lead stress

Copyright © 2015 Elsevier Masson SAS. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant physiology and biochemistry : PPB. - 1991. - 98(2016) vom: 18. Jan., Seite 64-71
1. Verfasser: Lamhamdi, Mostafa (VerfasserIn)
Weitere Verfasser: Lafont, René, Rharrabe, Kacem, Sayah, Fouad, Aarab, Ahmed, Bakrim, Ahmed
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Plant physiology and biochemistry : PPB
Schlagworte:Journal Article Abiotic stress Antioxidant activity Ascorbate-glutathione Bioremediation Pb phytotoxicity Phytoecdysteroids Wheat germination Antioxidants Metals, Heavy mehr... Protective Agents Soil Pollutants Lead 2P299V784P Malondialdehyde 4Y8F71G49Q Ecdysterone 5289-74-7 Catalase EC 1.11.1.6 Superoxide Dismutase EC 1.15.1.1 Glutathione GAN16C9B8O Ascorbic Acid PQ6CK8PD0R
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100 1 |a Lamhamdi, Mostafa  |e verfasserin  |4 aut 
245 1 0 |a 20-Hydroxyecdysone protects wheat seedlings (Triticum aestivum L.) against lead stress 
264 1 |c 2016 
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500 |a Date Completed 27.09.2016 
500 |a Date Revised 30.09.2020 
500 |a published: Print-Electronic 
500 |a Citation Status MEDLINE 
520 |a Copyright © 2015 Elsevier Masson SAS. All rights reserved. 
520 |a 20-Hydroxyecdysone (20E) is the most abundant phytoecdysteroid (PE) produced by plants, where it represents a protective molecule against insect attack. The aim of the present study was to assess the effects of 20E on the growth, metabolic enzymes and antioxidant systems of wheat seedlings under lead stress induced by Pb(NO3)2 (3 mM). Pre-treatment concentrations (0, 1, 3 and 5 μM) of 20E were applied for two days, then wheat seedlings were transferred for 5 days to a treatment solution containing lead nitrate. When plants were grown without pre-treatment, germination and growth were impaired, while signs of oxidative stress were observed. 20E pre-treatment (3 or 5 μM) was able to efficiently protect seedlings from Pb toxicity by reducing Pb uptake and Pb-induced oxidative stress, as well by enhancing Pb excretion. Thus, 20E pre-treatment maintains normal germination, elongation, biomass, and metabolism in spite of the presence of Pb. Our results show that 20E protects oxidative balance and enhances the anti-oxidative systems, and more specifically the ascorbate-glutathione system. To our knowledge, this study shows for the first time that 20E treatment induces metabolic changes that allow the plants to resist heavy metal stress 
650 4 |a Journal Article 
650 4 |a Abiotic stress 
650 4 |a Antioxidant activity 
650 4 |a Ascorbate-glutathione 
650 4 |a Bioremediation 
650 4 |a Pb phytotoxicity 
650 4 |a Phytoecdysteroids 
650 4 |a Wheat germination 
650 7 |a Antioxidants  |2 NLM 
650 7 |a Metals, Heavy  |2 NLM 
650 7 |a Protective Agents  |2 NLM 
650 7 |a Soil Pollutants  |2 NLM 
650 7 |a Lead  |2 NLM 
650 7 |a 2P299V784P  |2 NLM 
650 7 |a Malondialdehyde  |2 NLM 
650 7 |a 4Y8F71G49Q  |2 NLM 
650 7 |a Ecdysterone  |2 NLM 
650 7 |a 5289-74-7  |2 NLM 
650 7 |a Catalase  |2 NLM 
650 7 |a EC 1.11.1.6  |2 NLM 
650 7 |a Superoxide Dismutase  |2 NLM 
650 7 |a EC 1.15.1.1  |2 NLM 
650 7 |a Glutathione  |2 NLM 
650 7 |a GAN16C9B8O  |2 NLM 
650 7 |a Ascorbic Acid  |2 NLM 
650 7 |a PQ6CK8PD0R  |2 NLM 
700 1 |a Lafont, René  |e verfasserin  |4 aut 
700 1 |a Rharrabe, Kacem  |e verfasserin  |4 aut 
700 1 |a Sayah, Fouad  |e verfasserin  |4 aut 
700 1 |a Aarab, Ahmed  |e verfasserin  |4 aut 
700 1 |a Bakrim, Ahmed  |e verfasserin  |4 aut 
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773 1 8 |g volume:98  |g year:2016  |g day:18  |g month:01  |g pages:64-71 
856 4 0 |u http://dx.doi.org/10.1016/j.plaphy.2015.11.006  |3 Volltext 
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