edaphobacter aggregans edaphobacter aggregans edaphobacter aggregans is a gram-negative, rod shaped bacterium from the genus edaphobacter. edaphobacter aggregans scientific classification domain: bacteria phylum: acidobacteriota class: "acidobacteriia" order: acidobacteriales family: acidobacteriaceae genus: edaphobacter species: e. aggregans binomial name edaphobacter aggreganskoch et al. 2008