Although this fungus’ primary role in its environment is to decompose organic matter, it’s also been used for its antimicrobial properties to create an antibiotic for the treatment of infections caused by Streptococcus pyogenes, such as strep throat and scarlet fever.
Despite being its namesake, a study has shown that Cobalt Crust’s reputable blue colour is only present after light exposure. Only in the presence of light can the corA gene be activated–this gene is responsible for the transcription of the mRNA encoding the striking pigment’s protein. An additional light-activated process is then activated to correctly process the mRNA to form the protein, and thus produce the cobalt blue colour. Without light, the fungus remains white.
It’s good to see more sightings of different types of fungi as they are vital for the decomposition of dead matter and allow nutrients to be ‘recycled’ by returning them to the soil. More different species of non-invasive fungi in an ecosystem have been shown to increase its biodiversity and productivity, meaning they’re important in ensuring our environment thrives. This news is promising in the British Isles, which have been suffering from a decline in biodiversity and a loss in the abundance of native plants.
Maybe the next time you’re out for a walk, try and spot some native plants and see what you can see! You could end up spotting something as rare and fascinating as Cobalt Blue if you look carefully enough.