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Effect of lead stress on mineral content and growth of wheat (Triticum aestivum) and spinach (Spinacia oleracea) seedlings
Joint Authors
al-Galiou, Ouiam
Bakrim, Ahmad
Novoa Munoz, Juan Carlos
Arias Estevez, Manuel
Aarab, Ahmad
Lafont, Rene
Lamhamdi, Mustafa
Source
Saudi Journal of Biological Sciences
Issue
Vol. 20, Issue 1 (31 Jan. 2013), pp.29-36, 8 p.
Publisher
Publication Date
2013-01-31
Country of Publication
Saudi Arabia
No. of Pages
8
Main Subjects
Topics
Abstract EN
-Lead (Pb) is the most common heavy metal contaminant in the environment.
Pb is not an essential element for plants, but they absorb it when it is present in their environment, especially in rural areas when the soil is polluted by automotive exhaust and in fields contaminated with fertilizers containing heavy metal impurities.
To investigate lead effects on nutrient uptake and metabolism, two plant species, spinach (Spinacia oleracea) and wheat (Triticum aestivum), were grown under hydroponic conditions and stressed with lead nitrate, Pb(NO3)2, at three concentrations (1.5, 3, and 15 mM).
Lead is accumulated in a dose-dependent manner in both plant species, which results in reduced growth and lower uptake of all mineral ions tested.
Total amounts and concentrations of most mineral ions (Na, K, Ca, P, Mg, Fe, Cu and Zn) are reduced, although Mn concentrations are increased, as its uptake is reduced less relative to the whole plant’s growth.
The deficiency of mineral nutrients correlates in a strong decrease in the contents of chlorophylls a and b and proline in both species, but these effects are less pronounced in spinach than in wheat.
By contrast, the effects of lead on soluble proteins differ between species; they are reduced in wheat at all lead concentrations, whereas they are increased in spinach, where their value peaks at 3 mM Pb.
American Psychological Association (APA)
Lamhamdi, Mustafa& al-Galiou, Ouiam& Bakrim, Ahmad& Novoa Munoz, Juan Carlos& Arias Estevez, Manuel& Aarab, Ahmad…[et al.]. 2013. Effect of lead stress on mineral content and growth of wheat (Triticum aestivum) and spinach (Spinacia oleracea) seedlings. Saudi Journal of Biological Sciences،Vol. 20, no. 1, pp.29-36.
https://search.emarefa.net/detail/BIM-357448
Modern Language Association (MLA)
Lamhamdi, Mustafa…[et al.]. Effect of lead stress on mineral content and growth of wheat (Triticum aestivum) and spinach (Spinacia oleracea) seedlings. Saudi Journal of Biological Sciences Vol. 20, no. 1 (Jan. 2013), pp.29-36.
https://search.emarefa.net/detail/BIM-357448
American Medical Association (AMA)
Lamhamdi, Mustafa& al-Galiou, Ouiam& Bakrim, Ahmad& Novoa Munoz, Juan Carlos& Arias Estevez, Manuel& Aarab, Ahmad…[et al.]. Effect of lead stress on mineral content and growth of wheat (Triticum aestivum) and spinach (Spinacia oleracea) seedlings. Saudi Journal of Biological Sciences. 2013. Vol. 20, no. 1, pp.29-36.
https://search.emarefa.net/detail/BIM-357448
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 35-36
Record ID
BIM-357448