Why in news?
A mushroom exploration team from the Central Agriculture University in Pasighat reported in May 2026 that they had found a rare Cordyceps fungus in East Siang district of Arunachal Pradesh at unusually low altitude. Cordyceps fungi are typically associated with Himalayan alpine zones. The discovery could open opportunities for scientific research and sustainable livelihoods in the region.
Background
Cordyceps are a genus of entomopathogenic fungi, meaning they parasitise insects. More than 750 species have been identified worldwide, although only about 35 have recognised medicinal value. The spores infect insect larvae or pupae, and the mycelium consumes the host from within. Eventually a long fruiting body emerges from the dead insect, releasing spores to infect other hosts. In traditional Chinese and Tibetan medicine, Cordyceps sinensis – the high‑altitude “caterpillar fungus” – is prized for its health benefits, including strengthening immunity and enhancing energy.
The East Siang discovery
- Unexpected location: Cordyceps are generally found above 3,000 metres. The specimen from East Siang was collected at a lower elevation, making it one of the first records from the district.
- Medicinal potential: Cordyceps species produce compounds such as cordycepin, adenosine, ergosterol and various polysaccharides. These substances exhibit immunomodulatory, antioxidant, anti‑inflammatory, antiviral, antitumor and antidiabetic properties.
- Research and livelihoods: Scientists from the University and the College of Horticulture and Forestry have begun culturing and identifying the strain. They plan to develop cultivation protocols to enable sustainable harvesting and provide income opportunities for local communities.
General properties of Cordyceps
- Parasitic life cycle: Each Cordyceps species targets a specific insect, such as ants, moths or spiders. After infection, the fungus consumes the host and sends up a stalk‑like structure that releases spores.
- Species diversity: The genus includes high‑value species like Cordyceps sinensis, which grows on ghost moth larvae at high altitude, and Cordyceps militaris, which can be cultivated in laboratories.
- Traditional uses: In East Asian medicine, Cordyceps preparations are believed to combat fatigue, improve sexual health and support respiratory and kidney function. However, scientific evidence is still evolving, and over‑harvesting of wild fungi can threaten natural populations.
Significance
The discovery in Arunachal Pradesh illustrates the biological richness of the eastern Himalayas. Proper identification and cultivation could yield new pharmaceuticals and provide a sustainable income source without damaging wild populations. At the same time, it highlights the need for regulation to prevent unsustainable harvesting driven by high market value. Ongoing scientific research will clarify the medicinal properties of this and other Cordyceps species and ensure that benefits are shared with local communities.