Figure 2. Agarose gel electrophoretogram of the total DNA isolated from three sampling sites. Lane 2 and 3: rhizosphere and its corresponding bulk soil from site 1; Lane 4 and 5: rhizosphere and its corresponding bulk soil from site 2; Lane 6 and 7: rhizosphere and its corresponding bulk soil from site 3. Lane 1: Molecular size marker (λDNA digested with Hind III and pUC18 DNA digested with Sau 3AI and Taq I).