tumebacillus soli tumebacillus soli tumebacillus soli is a species of gram positive, aerobic, bacterium. the cells are rod-shaped, motile, and form spores. it was first isolated from soil in danghangpo, south korea. the species was first described in 2015, and the name refers to its initial isolation from soil. tumebacillus soli scientific classification domain: bacteria division: bacillota class: bacilli order: bacillales family: alicyclobacillaceae genus: tumebacillus species: t. soli binomial name tumebacillus solikim and kim 2016 the optimum growth temperature for t. soli is 37 °c, and can grow in the 25-45 °c range. its optimum ph is 8.0, and grows in ph range 5.5-8.5. the bacterium forms cream-colored colonies on r2a agar.