DNA analysis identifies root-dwelling fungi as potential keystone species in forest microbial communities

Beneath the forest floor extends a vast ecosystem where a diverse array of microorganisms inhabit soil and root systems. Here, fungi and bacteria play pivotal roles in processes such as nutrient cycling and carbon sequestration. Within these microbial communities may exist a keystone species, which exerts a disproportionately large influence on the entire structure and function of such an ecosystem.