From Scientific American:
UK researchers have identified a mutant plant that is able to thrive on soil contaminated with high concentrations of the explosive TNT. The finding opens the way to cleaning up the vast swathes of land throughout the world – principally military firing ranges—polluted with the highly toxic and persistent compound. In addition the team has pinpointed the mechanism by which TNT exerts its toxicity in plants, and say this could lead to the development of new herbicides.
Read full article at Scientific American: Mutant Plants Mop up Explosives