Dr. Saranya Devi K
In-vitro evaluation of chromium tolerant plant growth promoting bacteria from tannery sludge sample, dindugal, tamil nadu, india
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Industrial waste is one of the most essential sources of contamination in the environment. Chromium (Cr) is a toxic heavy metal, a major contaminant in tannery wastes and its accumulation in soil and water is a major environmental concern today. In the present study, an attempt was made and investigated the status of different beneficial microbes particularly plant growth promoting rhizobacteria (PGPR) from tannery sludge samples collected from tannery effluent treatment plant at Dindugal, Tamil Nadu, India. Experiments were conducted and evaluated their chromium heavy metal tolerance abilities and plant growth promoting activities under in-vitro. Based on molecular analysis, the PGPRs were identified as Achromobacter xylosoxidans (LK391696), Azotobacter vinelandii (LK391702) and. The production of IAA was found to be high by Achromobacter xylosoxidans (46μg/ml) followed by Azospirillum lipoferum (30μg/ml). Phosphate solublization activity was also found to be positive in all these PGPR isolates. Significance of these results revealed that there is a possibility of using these potential PGPRs for bioremediation of chromium contaminated sites and also as good plant growth promoter.
Article Subject Details
Article Keywords Details
- Achromobacter xylosoxidans
- Azospirillum lipoferum
- Azotobacter vinelandii
- Tannery. xylosoxidans
- Chromium
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