[EN] The contamination of water by heavy metals
like Pb is a huge problem for the environment. In this paper,
we test Ceratophyllum demersum L. plants as phytoindicator.
These were exposed to different concentrations of Pb for 1¿21
days, under hydroponic conditions, where they exhibited both
adsorption and absorption efficiency. These efficiencies
influenced in concentration and duration in a dependent
manner. For the three initial treatments 0.125, 0.250, 0.500
¿g/ml, the values of regression coefficients described the
occurred variance on the rapid decrease in the Pb
concentration in the hydroponic media, reflecting highest
removal efficiency by C. demersum. Significant variation (P<
0.05) was recorded between the concentration of Pb
accumulated in C. demersum at 0.125 and 0.250 ¿g/ml, while a
highly significant value (P< 0.01) was recorded between them
at 0.500 ¿g/ml. The regression coefficient denotes the
pronounced impact of treatment concentration on the
accumulation rate (R^2 = 0.9987). The adsorption efficiency of
C. demersum appeared to be influenced by the Pb hydroponic
media concentration, where after 21 days, the higher Pb
adsorption was recorded at 0.125 ¿g/ml and the lowest one was
obtained at 0.500 ¿g/ml. Results suggest that plants responded
positively to the increase of Pb concentrations and they
accumulated a high amount of metal. Due to metal removal
coupled with detoxification potential, the plant appears to have
potential for its use as phytoremediator species in aquatic
environments.This work has been partially supported by the European
Union through the ERANETMED (Euromediterranean
Cooperation through ERANET joint activities and beyond)
project ERANETMED3-227 SMARTWATIR by the
Ministerio de Educación, Cultura y Deporte, through the
Ayudas para contratacion predoctoral de Formación del
Profesorado Universitario FPU (Convocatoria 2016). Grant
number FPU16/05540.Fawzy, M.; El-Khatib, A.; Badr, N.; Abo-El-Kasem, A.; Rocher-Morant, J.; Basterrechea-Chertudi, DA. (2019). Ceratophyllum demersum L. as Phytoindicator and Potential Phytoremediator of Lead Under Hydroponic Conditions. IARIA XPS Press. 20-26. http://hdl.handle.net/10251/180618S202