Identification of three new P450 genes
Using DDRT-PCR, the cDNA bands which were over-represented
in the resistant strain BJD than in susceptible strain TJS were recovered
and sequenced. Three of the isolated 52 cDNA fragments were
identified to be partial sequences of new P450 cDNA. To obtain
more information about the three putative P450 genes, the full
cDNAs and 50-flanking regions were isolated. 50-RACE was applied
to clone the 50 ends of the three genes. The full length cDNAs of the
three genes were verified by PCR using the primer pairs designed
based on the spliced sequences.