The most famous of zinc and cadmium hyperaccumulating Thlaspi caerulescens are J. & C. Presl and Arabidopsis halleri (L.) O'Kane & Al- Shehbaz . They are characterized by an increased collection of these metals from the substrate , higher transport to the shoots and resistance to high concentrations of metals in the tissues compared to non-hyperaccumulating species . In T. caerulescens was shown that Zn is done by the media ZNT1 with high affinity to the metal.