Roles of Phosphate Solubilizing Bacteria in Enhancing Phytoremediation of Heavy Metal Contaminated Cites

Abstract

Heavy metal pollution in soil is a great environmental problem and must be resolved urgently. Phytoremediation technology is generally accepted and broadly applications are phytostabilization and phytoextraction that is either absorbtion by root or accumulation by leaves and stems, respectively. Unfortunately, limitation on phytoremediation is heavy metal toxicity to plant. Interaction between plant and microbe, especially phosphate solubilizing bacteria, which produce plant growth regulators and also secrete low molecular weight organic acid for desorption of heavy metals from soil, could enhance efficiency of phytoremediation. In this review, therefore, phosphate solubilizing bacteria and its role in enhancing the efficiency of heavy metal remediation were discussed; that is, guideline for sustainable and environmentally friendly application.