Effects of different elicitors on 10-deacetylbaccatin III-10-O-acetyltransferase activity and cytochrome P450 monooxygenase content in suspension cultures of Taxus cuspidata cells

The effects of four elicitors, including 100 μmol/l MeJA (methyl jasmonate), 40 μl/l hydrogen peroxide (30%, w/w), 80 mg/l SA (salicylic acid) and 0.4 g/l F3 (fungal elicitor), on suspension cultures of Taxus cuspidata were studied. After addition of the above four elicitors, the enzyme activity of 10-DBAT (10-deacetylbaccatin III-10-O-acetyltransferase) was induced and reached its maximum of 5.47, 0.97, 3.30 and 6.82 U, respectively. After elicitation, the concentrations of cytochrome P450 monooxygenase were also induced to its maximum values of 0.069, 0.336, 0.321 and 0.193 nmol/ml, respectively. In addition, under the elicitation, the change in 10-DBAT activity was similar to that of cytochrome P450 monooxygenase concentration. The products of these two enzymes changed after the variety of the enzymes, and the taxol content increased through the cultivation.