terrabacter terrigena terrabacter terrigena terrabacter terrigena is a species of gram-positive, nonmotile, non-endospore-forming bacteria. cells are rod-shaped. it was initially isolated from soil from around a wastewater treatment plant in south korea. the species was first described in 2009, and its name is derived from latin terrigena (child of the earth, earth-born) referring to the isolation of the type strain from soil. terrabacter terrigena scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: intrasporangiaceae genus: terrabacter species: t. terrigena binomial name terrabacter terrigenayoon et al. 2009 the optimum growth temperature for t. terrigena is 30 °c and can grow in the 10-37 °c range. the optimum ph is 6.5-7.0 and can grow in ph 5.0-8.5.