Partial sequencing of 16S rRNA for the bacterial strains was performed with the help of a DNA sequencing service
(Solgent, Daejeon, South Korea) with universal primers,
27F (5’-AGAGTTTGATCCTGGCTCAG-3’), and 1492R
(5’-GGTTACCTTGTTACGACTT-3’). Polymerase chain
reaction (PCR) was performed with initial denaturation at
95 oC for 2 min followed by 30 cycles with denaturation
for 30 s at 94 oC, annealing for 30 s at 58 oC, and extension
for 45 s at 72 oC. The final extension was held for 5 min
at 72 oC