The possible reason for enhancement in
overall effect of metal uptake by P. australis and T. latifolia when
grown association might be because the rhizosphere of these
plants was increased, which would further augment the cell wall
capability to absorb metals through immobilization. Another reason for the enhancement in overall heavy metal removal might be
due to the excretion of phytosiderophores by these plants forming
complex with free heavy metal ions. Similar findings were re-ported by Tsednee et al. (2012).