E-ISSN 2090-0503 | ISSN 1687-7497
 

Original Research 


Seed priming in natural weed extracts represents a promising practice for alleviating lead stress toxicity

Sherien Sobhy, Khalil Saad Allah, Essam Elden Abo Kassem, Elsayed Hafez, Nasser Sewelam.

Abstract
Soil contamination with lead (Pb) represents a common heavy metal stress for cultivated plants. In the current study, effects of Pb stress on wheat (Triticum aestivum) plants were evaluated, and alleviating roles of purslane and chard natural weed extracts were assessed. The results showed that Pb treatment (100 mM) significantly reduced the growth of wheat seedlings and diminished plant yield parameters. Moreover, Pb stress inhibited photosynthetic activity measured as Fv/Fm. The levels of various stress markers increased under Pb stress as was verified by the increased electrolyte leakage, malondialdehyde (MDA) content, H2O2 and .OH radical content. Pb stress increased the activity of peroxidase (POX), catalase (CAT), superoxide dismutase (SOD), as well as raised the content of the antioxidant compound ascorbic acid. A remarkable induction in some genes was reported under Pb stress. The ameliorative role achieved by seed priming of wheat in purslane and chard weed extracts was demonstrated by the increase in growth parameters in seedling and yield stages. In the meantime, the priming treatments increased the Fv/Fm value. In addition, the activities of the antioxidant enzymes POX, CAT and SOD were reduced by seed priming. Data presented in the current work provide strong evidence that natural weed extracts are efficient to alleviate damaging effects of abiotic challenges such as heavy metal stress imposed by high soil Pb concentrations, and thus possibly could represent a valuable ecofriendly and commercial values for plant farmers.

Key words: Triticum aestivum, purslane and chard, heavy metal, lead stress, weed extracts, seed priming, antioxidants


 
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How to Cite this Article
Pubmed Style

Sobhy S, Allah KS, Kassem EEA, Hafez E, Sewelam N. Seed priming in natural weed extracts represents a promising practice for alleviating lead stress toxicity. Egypt. J. Exp. Biol. (Bot.). 2019; 15(2): 453-468. doi:10.5455/egyjebb.20191223054507


Web Style

Sobhy S, Allah KS, Kassem EEA, Hafez E, Sewelam N. Seed priming in natural weed extracts represents a promising practice for alleviating lead stress toxicity. http://www.egyseb.net//?mno=79129 [Access: October 30, 2020]. doi:10.5455/egyjebb.20191223054507


AMA (American Medical Association) Style

Sobhy S, Allah KS, Kassem EEA, Hafez E, Sewelam N. Seed priming in natural weed extracts represents a promising practice for alleviating lead stress toxicity. Egypt. J. Exp. Biol. (Bot.). 2019; 15(2): 453-468. doi:10.5455/egyjebb.20191223054507



Vancouver/ICMJE Style

Sobhy S, Allah KS, Kassem EEA, Hafez E, Sewelam N. Seed priming in natural weed extracts represents a promising practice for alleviating lead stress toxicity. Egypt. J. Exp. Biol. (Bot.). (2019), [cited October 30, 2020]; 15(2): 453-468. doi:10.5455/egyjebb.20191223054507



Harvard Style

Sobhy, S., Allah, . K. S., Kassem, . E. E. A., Hafez, . E. & Sewelam, . N. (2019) Seed priming in natural weed extracts represents a promising practice for alleviating lead stress toxicity. Egypt. J. Exp. Biol. (Bot.), 15 (2), 453-468. doi:10.5455/egyjebb.20191223054507



Turabian Style

Sobhy, Sherien, Khalil Saad Allah, Essam Elden Abo Kassem, Elsayed Hafez, and Nasser Sewelam. 2019. Seed priming in natural weed extracts represents a promising practice for alleviating lead stress toxicity. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 15 (2), 453-468. doi:10.5455/egyjebb.20191223054507



Chicago Style

Sobhy, Sherien, Khalil Saad Allah, Essam Elden Abo Kassem, Elsayed Hafez, and Nasser Sewelam. "Seed priming in natural weed extracts represents a promising practice for alleviating lead stress toxicity." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 15 (2019), 453-468. doi:10.5455/egyjebb.20191223054507



MLA (The Modern Language Association) Style

Sobhy, Sherien, Khalil Saad Allah, Essam Elden Abo Kassem, Elsayed Hafez, and Nasser Sewelam. "Seed priming in natural weed extracts represents a promising practice for alleviating lead stress toxicity." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 15.2 (2019), 453-468. Print. doi:10.5455/egyjebb.20191223054507



APA (American Psychological Association) Style

Sobhy, S., Allah, . K. S., Kassem, . E. E. A., Hafez, . E. & Sewelam, . N. (2019) Seed priming in natural weed extracts represents a promising practice for alleviating lead stress toxicity. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 15 (2), 453-468. doi:10.5455/egyjebb.20191223054507