PCR Amplification of 16S rRNA and Sequence Analysis Genomic DNA from each isolate was used as a template for amplifying the 16s RNA gene fragment by PCR using forward primer 27F(5' GAGTTTGATC MTGGCTCAG 3') and reverse primer 1492r(5'-GGTTACCTTGTTAC GACTT-3'). The 50 ul PCR mixture consisted of 25 Hl DreamTaq Green PCR Master Mix 2 x(Thermoscien tific), 2 ul Genomic DNA, 1 HM of each primer and 21 ul nuclease-free water. The reaction was carried out accordin to Gronemeyer et al. [13] in a Esco Swift M MaxPro Thermal cycler. More specifically, PCR cycle steps were as follows: initial denaturation a 95 °C for 4 min. 35 cycles at 95 oc for 1 min, 50 °C for 30 s and 72 °C for 1 min, and final extension at 72 oC for 10 min and holding at 4 °C. The products were separated by electrophoresis in agarose gels stained with ethidium bromide and visualized under UV light. Purification and sequencing PCR fragments were carried out at Inqaba Biotec(Pretoria, South Africa).