European Journal of Biomedical and Pharmaceutical Sciences

HEAVY METAL TOLERANCE OF SOIL BACTERIA ISOLATED FROM PLANT RHIZOSPHERE REGION OF VIGNA RADIATA, L.

Prasanti Devi, Rasmita Padhy, S. P. Nayak, S. Panigrahi and B. K. Mohanty*

ABSTRACT

The presence of mercury metal in soil and water is negligible and there is hardly any literature available to establish microbial resistance to mercury toxicity. In the presence study four different strains were isolated from root rhizosphere region of Vigna radiata L. which were grown in soil collected from industrial area of Berhampur , Odisha. These four strains showed a wide range of resistance to mercury. A decrease in bacterial growth was observed with the increase in metal concentration at any given time interval compared to the control without metal amendment. The lower optical density values revealed that the bacterial growth was affected due to the presence of metal in the growth medium. The MRB (p2) thus isolated may be recommended their potential to be exploited in bioremediation purposes.

Keywords: Heavy metal, Mercury, Soil bacteria, Rhizosphere.