Author(s): Fatima Zohra Babou, Amina Kadiri, Fatima Yakoubi, Hasni Rahim Guealia, and Moulay Belkhodja
Article publication date: 2018-12-01
Vol. 36 No. 1/2/3/4 (yearly), pp. 23-31.
256

Keywords

Lead nitrate,Fresh weight, Dry weight, Chlorophylls, Proline, Total proteins.

Abstract

Soil pollution is one of the main environmental stresses due to the effect of various contaminations by heavy metals like lead. The aim of this study is to examine the response of a halophile species Atriplex halimus L. under lead stress. This plant is watered from the germination stage with different concentrations of lead nitrate Pb(NO3)2 1000, 3000, 5000 and 7000 ppm for 100 days. The response of plants is evaluated by an analysis of the growth mass parameters (fresh and dry weight) and biochemical parameters (chlorophyllian pigments, proline and total proteins). The results reveal a growth inhibition of the aerial and root parts by Pb(NO3)2 treatment compared to control. On the other hand, the biochemical response indicates that the amount of chlorophyll pigments reduced by the effect of different treatment of lead. In contrast, proline and total proteins contents increased in leaves and roots of Atriplex halimus L. as a response to stress.