... test system C. The labels a, b, and c are PCR-DGGE banding patterns of 16S rRNA gene in test systems A, B, and C, respectively; d, e, and f are PCR-DGGE banding patterns of C12O gene in test systems ... systems A, B, and C, respectively; and g, h, and i are PCR-DGGE banding patterns of C23O gene in test systems A, B, and C, respectively. PCR products of C12O gene in test system C at the 1st and 2nd ... fronds of S. polyrrhiza in test systems A and B at the beginning of each cycle, and suspended bacteria were collected from 30 mL of Hoagland solution in test system C at the beginning of each...