Conjoint Application of Novel Bacterial Isolates And Their Consortium on Dynamic Changes in Oxidative Stresses, Antioxidant and Non-Antioxidant Enzyme Responses of Axenic Brassica Juncea L. Plant Grown in Hg-Stress Soils

This current experimental study explore the possible role of three Hg-resistant bacterial strains and their consortium in growth and promotion of mustard plant ( Brassica juncea ) under Hg-stress condition. For the study of potentials of bacterial strains under Hg stress condition, pot scale experiment system was organized with Brassica juncea under different concentration of mercury. From the obtained results, it was concluded that all the three strains and their consortium were competent in the stimulation of plant growth, biomass as well anti-oxidative enzyme activities. The consortiums of all the three strains were more prominent in the intensification of Brassica juncea physiological function in comparison to the individual strains. Under Hg-stress conditions, all of the strains increased the level of antioxidative content in Brassica juncea , indicating an increase in enzyme activity to cope with oxidative stress. Among all the three strains, Morganella Morganii (IITISM23) showed highest accumulation potential in B. juncea followed by Brevundimonas Dimunta (IITISM22) and Citrobacter Freundii (IITISM25). Hence, the results suggest that the IITISM22, IITISM23, IITISM25 strains and their consortium are very effective in phytoremediation and promote Brassica juncea growth under Hg-stress condition