[Optimal culture conditions of transgenic Polygonium multiflorum hairy root and the effect of elicitor on its growth].

Objective: To optimize the culture medium of transgenic Polygonium multiflorum hairy root and the effect of different elicitors on its growth.

Methods: Measured the growth curve of hairy root in four media, including MS, 1/2 MS, B5 and White and estimated the effects of elicitors on the hairy root biomass.

Results: MS medium was the most suitable of the four media for hairy root growth. The different concentrations of elicitors, salicylic acid and methyl jasmonate, inhibited the biomass accumulation of hairy root.

Conclusion: MS is the optimum medium for transgenic Polygonium multiflorum hairy root. Two usual plant elicitors, salicylic acid and methyl jasmonate, can inhibit the growth of transgenic hairy root.