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Effects of macro elements and nitrogen source on adventitious root growth and ginsenoside production in ginseng (Panax ginseng C. A. Meyer)

한국식물학회지 2001년 44권 4호 p.179 ~ 184
 ( Yu Kee-Won ) - Chungbuk National University Research Center for the Development of Advanced Horticultural Technology

 ( Gao Wen Yuan ) - Hong Kong Institute of Biotechnology
 ( Hahn Eun-Joo ) - Chungbuk National University Research Center for the Development of Advanced Horticultural Technology
백기엽 ( Paek Kee-Yoeup ) - Chungbuk National University Research Center for the Development of Advanced Horticultural Technology

Abstract


We investigated the effects on ginseng adventitious root growth and ginsenoside production when macro-element concentrations and nitrogen source were manipulated in the culture media. Biomass growth was greatest in the medium supplemented with 0.5-strength NH4PO3, whereas ginsenoside accumulation was highest (9.90 mg g-1 DW) in the absence of NH4PO3. At levels of 1.0-strength KNO3, root growth was maximum, but a 2.0 strength of KNO3 led to the greatest ginsenoside content (9.85 mg g-l). High concentrations of MgSO4 were most favorable for both root growth and ginsenoside accumulation (up to 8.89 mg g-1 DW). Root growth and ginsenoside content also increased in proportion to the concentration of CaCI2 in the medium, with the greatest accumulation of ginsenoside (8.91 mg g-1 DW) occurring at a 2.0 strength. The NH4/NO3 -- ratio also influenced adventitious root growth and ginsenoside production; both parameters were greater when the NO3 - concentration was higher than that of NH4 +. Maximum root growth was achieved at an NH4 +/NO3 - ratio of 7.19/18.50, while ginsenoside production was greatest (83.37 mg L-1) when NO3 - was used as the sole N source.

키워드

bioreactor; macro element; NH4 +/NO3 - ratio; nitrogen source
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