Pseudomonas species strain PXM, which is able to use dicamba (3,6-dichloro-
2-methoxybenzoic acid; CAS 1918-00-9, Banvel(TM)) as its sole carbon source
for growth, has been isolated. The catabolism of dicamba and some of its p
utative metabolic descendants correlates with the presence of a large and u
nstable plasmid.