Saponin production by cultures of Panax ginseng transformed with Agrobacterium rhizogenes

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Abstract
Hairy root culture of Ginseng (Panax ginseng) was established after roots were induced on callus following infection with Agrobacterium rhizogenes. The transformed cultures of ginseng could be subcultured as an axenic root culture in the absence of phytohormones, and grew with extensive lateral branches more rapidly than the ordinary cultured roots induced by hormonal control from ginseng callus. The hairy roots synthesized the same saponins, ginsenosides, as those of the native root, up to about 2.4 times in the quantity, and up to about 2 times in comparison with that of the ordinary cultured roots, on dry weight basis.