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Biotic elicitation of ginsenoside metabolism of mutant adventitious root culture in Panax ginseng.
- Source :
-
Applied microbiology and biotechnology [Appl Microbiol Biotechnol] 2018 Feb; Vol. 102 (4), pp. 1687-1697. Date of Electronic Publication: 2018 Jan 18. - Publication Year :
- 2018
-
Abstract
- Biotic elicitation is an important biotechnological strategy for triggering the accumulation of secondary metabolites in adventitious root cultures. These biotic elicitors can be obtained from safe, economically important strains of bacteria found in the rhizosphere and fermented foods. Here, we assayed the effects of filtered cultures of five nitrogen-fixing bacteria and four types of fermentation bacteria on mutant adventitious Panax ginseng root cultures induced in a previous study by colchicine treatment. The biomass, pH, and electrical conductivity (EC) of the culture medium were altered at 5 days after treatment with bacteria. The saponin content was highest in root cultures treated with Mesorhizobium amorphae (GS3037), with a concentration of 105.58 mg g <superscript>-1</superscript> dry weight saponin present in these cultures versus 74.48 mg g <superscript>-1</superscript> dry weight in untreated root cultures. The accumulation of the ginsenosides Rb <subscript>2</subscript> and Rb <subscript>3</subscript> dramatically increased (19.4- and 4.4-fold, and 18.8- and 4.8-fold) 5 days after treatment with M. amorphae (GS3037) and Mesorhizobium amorphae (GS336), respectively. Compound K production increased 1.7-fold after treatment with M. amorphae (GS3037) compared with untreated root cultures. These results suggest that treating mutant adventitious root cultures with biotic elicitors represents an effective strategy for increasing ginsenoside production in Panax ginseng.
Details
- Language :
- English
- ISSN :
- 1432-0614
- Volume :
- 102
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Applied microbiology and biotechnology
- Publication Type :
- Academic Journal
- Accession number :
- 29349493
- Full Text :
- https://doi.org/10.1007/s00253-018-8751-9