RECHERCHE IN SILICO DES PROTEINES ASSOCIEES A LA TOLERANCE AUX METAUX LOURDS CHEZ LA PLANTE HALOPHILE DU GENRE Atriplex

Abstract

Pollution from heavy metals is a major environmental problem for agricultural soils and air. In addition to the in vitro and / or in vivo approach, the in silico approach, using the bioinformatics tools, proves to be an alternative to identify rapidly to exploit the molecules (genes and proteins) responsible for heavy metal tolerance in plants. This allows a better understanding of the molecular mechanisms in question. Our study focused on the halophilic Atriplex canescens species. The results obtained via the NCBI molecular database, allowed to identify a family of proteins associated with heavy metals in the species Atriplex canescnes (Purch Nutt). This kind of proteins is responsible to metallic ionic transport and detoxification. The search of similarity sequences using the BLAST tool, showed a significant function similarities with others proteins of the same family in different plants such as Chenopodium quinoa willd., and the plant models like Arabidopsis thaliana L. and Medicago truncatula Gaertn