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J Integr Plant Biol, 1993, 35 (8): -, Research Article
Transformation of Gynostermma pentaphyllum by Agrobacterium rhizogenes and Saponin Production in Hairy Root Cultures
Fei Hou-man, Mei Kang-feng, Shen Xin ,Ye Yi-min. Lin Zhong-ping and Peng Li-hong
doi:
Abstract
Authors report here the establishment of an efficient transformation system for Gynosternrna pentaphyllum (Thunb.) Makino using Agrobacteriurn rhizogenes R1600. Hairy roots appeared on leaf explants 10 days after inoculation with the bacteria . Frequency of the explants transformed by R1600 was up to 94%. Transformation was confirmed by Southern analysis. Biomass of hairy root cultures suspended in hormone-free MS medium increased 9 times after 20 days of incubation. There was no callus formation on the hairy roots during suspension culture. Saponin content in the hairy root cultures was about 2 times as much as in the natural roots, saponins of the hairy root cultures were also released into growth medium as well.
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