Heavy metal tolerant nonendosymbiont plant growth promoting Rhizobacteria associated with the roots of evergreen shrubs Casuarina equisetifolia

Heavy metal in the environment such as agriculture soil and water resources have revealed in many environmental problems (Oztürk, 2007). The increasing industrialization and global economy over the last century has led to dramatically elevated reaction of anthropogenic chemicals into the environment. Discharge of heavy metal by metal processing industries into the soil that in long-term promotes their accumulation (Costa and Duta, 2001). The plantation grown on such land is often contaminated, and their consumption is hazardous (Li et al., 2006).