Amplicon 16S of Oily Sludge:  sludge1 after oxidation (PSNa), composting and phytoremediation (non-planted control)
DNA pooled from three independent extractions of 1 g of sample using the E.Z.N.A. Soil DNA Kit. The 16S rRNA gene V4 variable region was amplified with PCR primer set: 515F/806R.