Abstract:
Phytoremediation is an effective technique in countering heavy metal toxicity in soil.
Roots and root exudates play a pivotal role in the process of phytoremediation. Heavy
metal trafficking and chemical communication in the rhizosphere helps in overall
adaptation and tolerance of hyperaccumulator plant. Metabolic profiling of exudates
has been considered particularly important to understand the overall signaling of
metabolites while countering an abiotic stress. Brassica juncea has been considered as
a plant having phytoremediation capabilities. This is because it has high biomass and
is a hyperaccumulator plant. In this study effect of cadmium in the roots of Brassica
juncea is analyzed and cadmium trafficking in the rhizosphere is dissected by
conducting metabolic profiling of root exudates. The results showed that metabolic
profile of the root exudates was significantly altered in response to cadmium stress as
many Phyto chelating compounds that is different amino acids, organic acids, phenols
etc. were found on the treated groups. These compounds are expected to have major
importance in the adaptation of Brassica juncea in response to cadmium stress. Minimal
to no significance has been observed in root system architecture of Brassica juncea that
is only root hair density and length are clearly significant all other parameters are non significant or showed minimal significance
