Abstract
Hydroponically cultivated Nigella sativa L. plants treated with methyl jasmonate (MeJA) showed a twelve-fold increase in levels of the monodesmosidic triterpene saponins α-hederin and kalopanaxsaponin I (KsI) in the leaves. We will demonstrate that these two saponins accounted for approximately 10% of the dry plant matter, of which 93% was KsI and 7% α-hederin. To address the molecular basis of saponin induction by MeJA, we cloned and characterized the β-amyrin synthase gene (NsβAS1) encoding one of the key enzymes in triterpene saponin biosynthesis. As expected, NsβAS1 transcription was induced by MeJA and led to the production of β-amyrin when over-expressed in yeast.
Original language | English |
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Pages (from-to) | 517-522 |
Number of pages | 6 |
Journal | Phytochemistry |
Volume | 70 |
Issue number | 4 |
DOIs | |
State | Published - 1 Mar 2009 |
Keywords
- Hederins
- Hydroponics
- Kalopanaxsaponin I
- Methyl jasmonate
- Nigella sativa
- Ranunculaceae
- Saponin
- β-Amyrin synthase
ASJC Scopus subject areas
- Biochemistry
- Molecular Biology
- Plant Science
- Horticulture