Why in news?
Indian and Japanese researchers reported the discovery of a new bacterium, Brachybacterium netajii, in the waters of the Hooghly River. The microbe can break down toxic chemicals and tolerate heavy metals, offering promise for cleaning polluted waterways.
Background
The bacterium was isolated by scientists from Netaji Mahavidyalaya, the University of Burdwan, IIT (BHU) and Hiroshima University. Samples came from areas contaminated by industrial runoff. Laboratory tests showed that the strain can degrade p‑nitrophenol, a hazardous compound used in dyes and pesticides. Researchers named the species after Netaji Subhas Chandra Bose to honour his legacy.
Notable properties
- Pollutant degradation: The bacterium breaks down p‑nitrophenol into harmless by‑products. Such chemicals are difficult to remove using conventional methods.
- Heavy metal tolerance: It survives in the presence of arsenic, cadmium, lead and mercury. This resilience allows it to thrive in industrial effluents where most bacteria die.
- Halotolerance: The strain grows well even in high‑salt environments. This makes it useful for cleaning coastal and estuarine waters.
- Unique biochemistry: Researchers found unusual fatty acids and genomic islands that code for stress‑tolerance enzymes. These genes could be harnessed for industrial biotechnology.
- Bioremediation potential: By using this bacterium in treatment plants, authorities could reduce toxic pollutants in rivers and lower the cost of cleanup.
Conclusion
The discovery of Brachybacterium netajii opens new possibilities for tackling industrial pollution. Further research on its enzymes and survival mechanisms may lead to greener remediation technologies.