Eventually, Pseudomonas was determined to contain several genera of bacteria, and so in 1990 Pseudomonas facilis, Pseudomonas delafieldii, and several other strains of Pseudomonas and Alcaligenes were transferred to the new genus Acidovorax.
In 1990, it was decided that Pseudomonas included various bacterial genera. Consequently, Pseudomonas facilis, Pseudomonas delafieldii, and other strains of Pseudomonas and Alcaligenes were reclassified into the genus Acidovorax.