Journal of Pollution

In nature, many relationships are found amongst various species, which inhabit and find a way of living together in this ecosystem. The aquatic cyanobacterium species have been known to have certain mutualistic interactions with the non-aquatic fungal species, but not all such interactions have been ventured in depth. The cyanobacterium species Scytonema was extracted from a polluted lake while the fungal species Aspergillus flavus was isolated from rotten apples and pears. These have originated in different environments and were exposed to different media. They were co-cultured for 45 days, as well as cultured separately in BG11 medium, cyanobacteria spent medium, fungal spent medium and domestic primary effluent collected from a local open drainage. The observation portrayed their mutualistic relationship to one another and their efficiency in treating wastewater. Such a relationship has led to a decrease in the percentage of biomass and thus in-turn, helping us analyzes its effect in treating wastewater systems.