Abstract: The environment has been contaminated with organic and inorganic pollutants. Soil contamination was toxic metals, such as Cd, Pb, Cr, Ni, Cu, as result of worldwide industrialization has increased noticeably within past few years. Bioremediation is a biological process for cleanup of pollutants from the environment. In the present study, Bacillus cereus and Pseudomonas aeruginosa isolated from rhizosphere soil was used for bioremediation. These isolates were characterized for their ability of biochemical tests. Bacillus cereus and Pseudomonas aeruginosa were inoculated in Vignamungo.L plants by pots inoculation method and analyzed for the growth promotion efficacy in heavy metal polluted soil. The plant inoculated with isolates showed Plant height, root length and fresh weight, dry weight, as compared to non-inoculated control.Further analysis of leaves were carried out for the photosynthetic pigment analysis, in Vignamungo.L. Results of the study showed positive growth response of Vignmungo.L on heavy metal polluted soil in green house condition in plants. The study concluded that the heavy metal mobilizing PGPR could be used as effective inoculants for improving the phytoremediation in heavy metal contaminated soil as well as reclamation of heavy metal polluted soil. Phytoremediation is the process by which PGPR are stimulated to rapidly degrade the heavy metal contaminated soil to environmentally safe levels in soils. Such metal resistant PGPR, when used as bioinoculant or bio fertilizers, significantly improved the growth of plants in heavy metal contaminated soils. Application of PGPR processing metal detoxifying traits along with plant-beneficial properties is a cost effective and environmental friendly metal bioremediation approach.
Keywords: Bioremediation, Biofertilizer, Bioinoculants, Environment, Plant Growth Promoting Rhizobacteria.
Title: Effects of heavy metal contaminated soils using Plant Growth Promoting Rhizobacteria (PGPR)
Author: Santha kumari.R, Lalitha.S
International Journal of Life Sciences Research
ISSN 2348-313X (Print), ISSN 2348-3148 (online)
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