Figure 14. Biotechnology prospecting for phytoremediaiton of metals in the environment. In Brassicaceae Arabidopsis thaliana, Brassica species and Armoracia rusticana have been extensively studied for metal sensitivity and resistance. In A. thaliana a number of heavy metal accumulating and sequestering mutants have been identified. Brassicace are amenable to well-characterized biotechnological and molecular biological tools through which transgenic production can be achieved for field trials.