Total genomic DNA was extracted from the microbial consortium using
the benzyl chloride method [15]. The purified DNA was used as a template
for amplification of the partial 16S rDNA fragment using Taq DNA polymerase
(Fermentas, Vilnius, Lithunia) according to the manufacturer’s protocol
with 338GC-F forward primer, which was attached to a GC clamp at the 5-
terminus (5-cgcccgccgcgcgcggcgggcggggcgggggcacggggggactcctacgggaggca-3, GC
clamp sequence is underlined), and 518R reverse primer (5-attaccgcggctgctgg-3).
Reactions were performed in aMyCycler thermal cycler (Bio-Rad Laboratories, Hercules,
CA). The temperature profile consisted of 94 ◦C for 3min, followed by 30 cycles