Figure 7

Comparison of in vitro studied plant growth properties: indole-3-acetic acid (IAA), siderophores (Sid), organic acids (OA), and acetion (Acet) production, 1-aminocyclopropane-1-carboxylate (ACC)-deaminase activity, phosphate solubilization (P), atmospheric nitrogen fixation (N2) as well as cadmium (Cd), zinc (Zn), copper (Cu), and lead (Pb) tolerance of bacteria isolated from roots (R), rosette leaves (RL), stem leaves (SL), and rhizosphere (RS) of hyperaccumulator plants A. arenosa and A. halleri originating from Zn–Pb–Cd waste heaps (WH) and reference (R) area.