Gram-negative
Gram-negative bacteria are bacteria that do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. They are characterized by their cell envelopes, which are composed of a thin peptidoglycan cell wa ...
bacterium from the genus of
Sphingobacterium
''Sphingobacterium'' is a genus in the family Sphingobacteriaceae. The genus ''Sphingobacterium'' is characterized by the high concentrations of sphingolipid, sphingophospholipids as lipid components.corn roots.