Résumé:
Lead is one of the heavy metals considered as an environmental pollutant, causing many
toxic effects, especially during high dose exposure. It causes disturbances in all systems of the
human organism, as well as on many physiological mechanisms of plants.
One of the ecological solutions for this problem and soil remediation is to use heavy
metal storage plants (phytoremediation). In this context, the objective of this work is to study
the potential of Moringa oleifera L. to withstand large doses of lead and its ability to clean up
lead contaminated soil. The study involves the application of five doses of lead (0, 3, 5 and 10
mM) to Moringa oleifera L.
Morphophysiological analysis of the application of increasing doses of lead to Moringa
oleifera L. shows that it has a negative effect on plants and results in growth inhibition, with a
reduction in root length and a decrease in stem height, as well as a decrease in the production
of fresh and dry material of the aerial and root parts of Moringa oleifera L. compared with
controls and a decrease in leaf chlorophyllian pigment content ( chlorophyll a, b and total)
relative to the controls.
