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Abstract ▼ AI-Helper

Influnces of Fuiarium solani and Phytophthora cactorum infection on the changes in saponin components of Korean ginseng (Panax ginseng C.A. Meyer)roots and some of the biology of those fungi in relation to ginseng root were investigated. Mycelial growth of F. solani was decreased as increasing conce...

Influnces of Fuiarium solani and Phytophthora cactorum infection on the changes in saponin components of Korean ginseng (Panax ginseng C.A. Meyer)roots and some of the biology of those fungi in relation to ginseng root were investigated. Mycelial growth of F. solani was decreased as increasing concentration of the water extracts of fresh ginseng roots, while that of P. cactorum was increased as increasing the concentration of the water extracts and crude saponin. Mycelial growth of F. solani, however, was increased as increasing concentration of crude ginseng saponin upto 20 ppm, while it was tended to be decreased when the concentration was higher than 50 ppm. Nystatin also suppresed the growth of F. solani as increasing its concentration, but it did not affected on the growth of p. cactorum. Ginsenoside Ra and Ro components were not detected in ginseng roots inoculated with F. solani or P. cactorum. Panaxadiol gisenosides were increased by 3.0%, whereas panaxatriol ginsenosides were decreased by 34.9% in ginseng roots inoculated with F. iolani. In ginseng roots inoculated with P. cactorum panaxadiol ginsenosides were increased by 21.1%, but panaxatriol ginsenosides were decreased by 23.5%. PD/PT ratio in ginseng roots inoculated with F. solani or P. cactorum were equally increased by 58.4% in spite of differences in the change of panaxadiol and panaxatriol ginsenosides. The total saponin components of ginseng roots inoculated with F. solani or P. cactorum were decreased by 17.8% and 2.5%, respectively.