isolates were checked for indigo-reducing ability in indigocontaining culture broth. Two strains were isolated: one strain, strain A21, exhibited the highest similarity with Oceanobacillus chironomi T3944DT (DQ298704) (95.4% similarity), and the other strain, strain B16, exhibited the highest similarity with A. iburiensis M3 (AB188091) (98.2% similarity).