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Lead uptake, flavonoids, and proline relationship in Atriplex nummularia growing in a galena mining area

Anass Merzougui, Lasky Mariama, Fatima Ezzahrae Hamid, Mohamed Lachgar, Abdellah El Anssari, Driss Mrani


Phytoremediation is an emerging cost-effective remediation technology that uses plants to remove metals from contaminated soils. Average levels of Lead (Pb), total flavonoids content (TFC), and proline were assessed in 108 samples of Atriplex nummularia growing around an active mining area in southeastern Morocco.

From January to December 2018, three different locations were sampled within a radius of 0 to 800 meters from the central ore storage area to monitor the evolution of these content levels. These results were compared to a control group of plants.

Lead uptake ranged between 16-270 ppm and was found to be irregular during the sampling time frame or within the geographic location. Measurement results showed the expected effect of metal uptake on flavonoids and proline content.  Thus, high levels of lead are likely correlated with increasing proline (r = 0.949**) and decreasing flavonoids (r = 0.972**) concentrations, respectively.

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