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Heavy metals in main drains at great Cairo and correlation with polyamines, glutathione, and lipid peroxidation in hyperaccumulating plants

El-Araby, M. M. (2006) Heavy metals in main drains at great Cairo and correlation with polyamines, glutathione, and lipid peroxidation in hyperaccumulating plants. Acta Botanica Hungarica, 48 (3-4). pp. 291-309. ISSN 0236-6495

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Abstract

Heavy metals (Cu, Fe, Mn, Pb and Zn) were estimated in water, soil sediments and shoots of the predominant wild plants at certain locations of main drains in Giza (El-Moheet, El-Lebeny, Nahea and Kafr Hakeem) and Cairo (El-Massara sites 1, 2, 3). Heavy metal concentrations were higher in soil than in water, where these contents in either of them were not crossing the threshold of permissible levels, with the exception of Fe which showed substantial concentrations in water and soil sediments, especially at certain drain sites. Heavy metal accumulation was evident in plant shoots at different sites. An interesting result was the potential accumulation of Fe in shoots of Cyperus spp. (C. alopecuroides, C. dives, C. rotundus), Eichhornia crassipes, Eremopoa persica and Phragmites australis to limits exceeding those in soil. Other plant species also showed high abilities to hyperaccumulate one or more of the elements under study at certain locations. Endogenous polyamines (PAs): putrescine (Put), spermidine (Spd), and spermine showed enhanced levels with increase of heavy metal contents in plant shoots. In this instance the highest positive correlation was shown by Spd followed by Put. Correlation coefficients for total heavy metal contents and total PAs showed tight positive relation. This rule was obvious but not always consistent with respect to the correlation between the contents of total heavy metals and glutathione (GSH) or the lipid peroxidation product malon-di-aldehyde (MDA). Recovery of Eichhornia crassipes plants collected from El-Moheet, El-Lebeny, and El-Massara (3) drain sites, showed decreases in the levels of GSH and MDA after 6 days in a pool of renewal fresh water, whereby inconsistent changes were recorded after 12 days.

Item Type: Article
Subjects: Q Science / természettudomány > QK Botany / növénytan
Depositing User: Endre Sarvay
Date Deposited: 12 Mar 2018 10:20
Last Modified: 12 Mar 2018 10:20
URI: http://real.mtak.hu/id/eprint/78128

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