studied the nitrate removal in denitrification reactor using different
solid carbon source. Woodchips exhibited a high abundance of nitrite
reductase genes as a proportion of total bacterial DNA (16S rRNA),
while maize cobs had a low copy number of denitrification genes as a
proportion of total bacteria.The abundance of denitrifying community could be estimated by determining
the copy numbers of nitrite reductase (nirS and nirK) and nitrous-
oxide reductase (nosZ) functional genes