In conclusion, the results show that the rhizosphere is a large
reservoir of bacteria capable of promoting plant growth. PGPR
bacteria are capable of development and functioning at even high
concentrations of heavy metals and thus, may decrease the plants
toxicity of heavy metals. This effectis particularly needful on industrial
areas with no vegetation cover, because of high toxicity of ions.
This research confirms that PGPR bacteria increase capability of
plats to survive and develop the vegetation cover on contaminated
areas. The efficiency of specific PGPR may be further enhanced with
the optimization and acclimatization according to the prevailing
soil conditions