sphingobacterium nematocida sphingobacterium nematocida sphingobacterium nematocida is a gram-negative bacterium from the genus of sphingobacterium which has been isolated from the tobacco-plant nicotiana tabacum in yuxi in china. sphingobacterium nematocida scientific classification domain: bacteria phylum: bacteroidota class: sphingobacteriia order: sphingobacteriales family: sphingobacteriaceae genus: sphingobacterium species: s. nematocida binomial name sphingobacterium nematocidaliu et al. 2012 type strain cctcc ab 2010390, jcm 17339, m-sx103