sphingobacterium siyangense sphingobacterium siyangense sphingobacterium siyangense is a gram-negative, non-spore-forming and non-motile bacterium from the genus of sphingobacterium which has been isolated from soil from jiangsu in china. sphingobacterium siyangense scientific classification domain: bacteria phylum: bacteroidota class: sphingobacteriia order: sphingobacteriales family: sphingobacteriaceae genus: sphingobacterium species: s. siyangense binomial name sphingobacterium siyangenseliu et al. 2008 type strain cgmcc 1.6855, jcm 14866, kctc 22131, sy1 synonyms sphingobacterium siyangensis