Why in news?
Scientists from the Central University of Rajasthan announced the discovery of a novel cyanobacterium from water samples collected in Pushkar Lake (Pushkar Sarovar) in Rajasthan. Named Pushkarnema curajae, the organism represents not just a new species but an entirely new genus, highlighting the unique microbial diversity of the semi‑arid Pushkar ecosystem.
Background
Cyanobacteria, often called blue‑green algae, are microscopic bacteria that perform photosynthesis. They occur in a wide range of aquatic and terrestrial environments and played a crucial role in oxygenating Earth’s early atmosphere. Because they can fix nitrogen and produce bioactive compounds, cyanobacteria are studied for biofertilisers, pharmaceuticals and nutraceuticals.
Discovery and characteristics
- Sampling: Researchers collected water from Pushkar Lake during surveys in 2016 and 2021. In the laboratory they isolated a filamentous cyanobacterium with unusual morphology and genetic sequence.
- New genus: Detailed analysis showed that the organism did not fit into known genera. The genus name Pushkarnema commemorates Pushkar Lake, while the species epithet curajae honours the Central University of Rajasthan.
- Potential applications: Preliminary tests suggest that Pushkarnema curajae may produce pigments and metabolites with antioxidant properties. Scientists hope it could lead to new nutraceuticals, biofertilisers and climate‑resilient crops.
- Ecological context: Pushkar lies in a semi‑arid region of the Thar Desert. The lake experiences high evaporation and fluctuating salinity, favouring extremophile microbes. Researchers believe many more unique species remain undiscovered.
Significance
The discovery of a new cyanobacterial genus is rare and underscores how little is known about microbial diversity in Indian lakes. Documenting and cultivating such organisms could yield novel compounds for medicine and agriculture, while also informing the conservation of fragile wetland ecosystems.
Source: The Times of India
